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|source 2 = SMHI Average Data 2002–2015<ref name=eather2>{{cite web| url=http://www.smhi.se/klimatdata/meteorologi/temperatur/2.1240| title=Statistics from Weather Stations| language=sv| access-date=27 February 2015| publisher=SMHI| date=February 2016| archive-date=20 February 2015| archive-url=https://web.archive.org/web/20150220041045/http://www.smhi.se/klimatdata/meteorologi/temperatur/2.1240| url-status=dead}}</ref>
|source 2 = SMHI Average Data 2002–2015<ref name=eather2>{{cite web| url=http://www.smhi.se/klimatdata/meteorologi/temperatur/2.1240| title=Statistics from Weather Stations| language=sv| access-date=27 February 2015| publisher=SMHI| date=February 2016| archive-date=20 February 2015| archive-url=https://web.archive.org/web/20150220041045/http://www.smhi.se/klimatdata/meteorologi/temperatur/2.1240| url-status=dead}}</ref>
}}
}}

== Järvsö climate ==

=== Gulf stream collapse ===

{{climate chart
| Järvsö
|-19.5|-11.5|37.5
|-18.4|-10.0|25.6
|-12.6|-4.1|25.1
|-2.3|6.4|24.2
|5.2|15.5|25.1
|11.4|21.8|38.0
|13.6|24.5|37.2
|12.4|22.9|37.6
|7.3|16.0|41.3
|-0.3|6.0|58.2
|-9.3|-3.8|42.3
|-17.2|-9.5|38.1
|float =
|clear =
|units = metric
|source = NOAA<ref name="Järvsö Weatherbox NOAA txt"/>
}}

Järvsö has a cold version of the warm-summer [[humid continental climate]] (''Dfb'') according to the [[Köppen climate classification]], and like most of [[Norrland]] features staggering seasonal differences. Summers are warm, very much so for its latitude, and see almost 20 hours of daylight on the [[summer solstice]]. Highs usually hover between {{convert|21|and|25|C}}, though frequently range between {{convert|25|and|30|C}} during heatwaves, with occasional peaks of above {{convert|30|C}}. Generally, highs above {{convert|20|C}} can be expected on most days from early June to late August. Nights remain cool, between {{convert|10|and|15|C}} on average, though may on the coolest ones fall to around {{convert|5|C}}. Tropical nights are rare, occurring on average only every other year. Summer and fall are usually the seasons that feature the most precipitation, and rainy periods, especially in the early and late part of summer, can see daytime highs below {{convert|20|C}}. "Högsommardagar" (high/peak summer days) occur 32 days annually, while highs reach the {{convert|30|C}}-mark on 3 days.

Winters are snowy, frigid, and very long, spanning almost half the year, and feature highs below freezing from early November to late March. Days see highs of {{convert|-9|to|-12|C}} from December to February, and nighttime lows hover between {{convert|-17|to|-20|C}} on most nights, and frequently fall below {{convert|-20|C}}, doing so on average 21 nights annually. The coldest nights see temperatures below {{convert|-30|C}}, occurring 4 times per season, with the coldest just above {{convert|-40|C}}. Such conditions may feature highs below {{convert|-25|C}}, but are usually brief, yielding to more bearable weather within a day or two. Typically, the mercury will not rise above freezing at all from late November to early-to-mid March, with warmer winter days seeing temperatures between {{convert|-2|and|-6|C}}. The [[Ljusnan]] begins to freeze at the end of October, becoming walkable by the start of November, and does not break up until mid-April. Snow cover lasts from late October or early November to the second half of April.

Spring and fall are short and volatile seasons, subject to swift swings in temperature in either direction, spring especially so. Spring begins in mid-April, with April featuring the infamous Swedish "aprilväder" (''literally'' April weather) that can see summer-like temperatures followed by snowfall the next day. While rare, such swings can extend into early May. Nature begins to blossom out in mid-May, coinciding roughly with the arrival of meteorological summer. Fall arrives in mid-September, with [[fall foliage]] visible from early September to mid-October. The first snowfall typically occurs in mid-October, followed by a period of freeze-thaw cycles and slushy weather sometimes called "oktöber" (''roughly'' Octhawber). Winter then arrives in late October.

The highest recorded temperature in Järvsö was registered at {{convert|36.2|C}} on August 4, 1975, while the hottest month on record was July 2018 with a mean of {{convert|23.2|C}}. That July also saw a record long streak of 10 days in a row above {{convert|30|C}}, and the hottest low of {{convert|22.1|C}} was on August 5, 1975, the day after the record high. The lowest temperature on record was {{convert|-46.2|C}} on February 10, 1942, while the lowest high reached a meager {{convert|-39.7|C}} on January 14, 2010. The coldest month ever was January 1987 with a mean of {{convert|-27.2|C}}, while the longest continuous streak of sub-zero temperatures lasted 169 days from October 20, 1941, to April 6, 1942.

Annual precipitation amounts to an average of {{convert|430|mm|abbr=on}}, seeing higher amounts in summer and fall and lower ones in the spring. The spring thaw causes very high water discharge in the Ljusnan, though thanks to rising altitudes to the west, and thus delayed melting there, flooding is not particularly common as meltwater flows come progressively rather than all at once. Due to the abundance of meltwater reservoirs, summer droughts are rarely a problem. Järvsö receives an average of {{convert|170|cm|abbr=on}} of snowfall a year, the largest amounts falling from November to March, but multiple snow days also expected in October and April. Snowfall has occurred as early as September 21 and as late as May 17. Unlike the coastal parts of [[Hälsingland]], Järvsö is not subject to much [[lake-effect snow|sea-effect snow]] coming off the Baltic, but rather sees small amounts accumulate over time. Still, the largest daily snowfall was {{convert|50|cm|abbr=on}}, which occurred on November 13, 2016, while the snowiest season was 1989-1990 with {{convert|244|cm|abbr=on}}. Snow depth tends to peak between {{convert|85|and|90|cm|abbr=on}} in mid-March, though did reach a depth of {{convert|180|cm|abbr=on}} in March 1966. The longest continuous snow cover lasted 209 days from October 12, 1941, to May 8, 1942.

The [[aurora borealis]] can fairly often be seen from Järvsö.


{{Weather box|width=auto
|location = Järvsö (2002–2021 averages); extremes since 1951)
|collapsed =
|metric first = Yes
|single line = Yes
|Jan record high C = 4.8
|Feb record high C = 7.0
|Mar record high C = 13.0
|Apr record high C = 24.6
|May record high C = 29.7
|Jun record high C = 35.0
|Jul record high C = 34.7
|Aug record high C = 36.2
|Sep record high C = 27.8
|Oct record high C = 21.3
|Nov record high C = 12.7
|Dec record high C = 6.2
|year record high C = 36.2
|Jan avg record high C = -1.6
|Feb avg record high C = -1.0
|Mar avg record high C = 5.9
|Apr avg record high C = 16.2
|May avg record high C = 24.2
|Jun avg record high C = 29.0
|Jul avg record high C = 30.6
|Aug avg record high C = 29.4
|Sep avg record high C = 22.1
|Oct avg record high C = 14.2
|Nov avg record high C = 5.5
|Dec avg record high C = -0.3
|year avg record high C = 31.8
|Jan high C = -11.5
|Feb high C = -10.0
|Mar high C = -4.1
|Apr high C = 6.4
|May high C = 15.5
|Jun high C = 21.8
|Jul high C = 24.5
|Aug high C = 22.9
|Sep high C = 16.0
|Oct high C = 6.0
|Nov high C = -3.8
|Dec high C = -9.5
|year high C =
|Jan mean C = -15.5
|Feb mean C = -14.2
|Mar mean C = -8.4
|Apr mean C = 2.1
|May mean C = 10.4
|Jun mean C = 16.6
|Jul mean C = 19.1
|Aug mean C = 17.7
|Sep mean C = 11.7
|Oct mean C = 2.9
|Nov mean C = -6.6
|Dec mean C = -13.4
|year mean C =
|Jan low C = -19.5
|Feb low C = -18.4
|Mar low C = -12.6
|Apr low C = -2.3
|May low C = 5.2
|Jun low C = 11.4
|Jul low C = 13.6
|Aug low C = 12.4
|Sep low C = 7.3
|Oct low C = -0.3
|Nov low C = -9.3
|Dec low C = -15.2
|year low C =
|Jan avg record low C = -35.8
|Feb avg record low C = -34.3
|Mar avg record low C = -26.3
|Apr avg record low C = -9.0
|May avg record low C = -1.4
|Jun avg record low C = 4.6
|Jul avg record low C = 7.1
|Aug avg record low C = 4.8
|Sep avg record low C = -0.2
|Oct avg record low C = -8.3
|Nov avg record low C = -20.8
|Dec avg record low C = -32.8
|year avg record low C = -38.7
|Jan record low C = -44.9
|Feb record low C = -46.2
|Mar record low C = -39.5
|Apr record low C = -20.8
|May record low C = -4.4
|Jun record low C = 1.8
|Jul record low C = 4.0
|Aug record low C = 1.1
|Sep record low C = -4.8
|Oct record low C = -14.9
|Nov record low C = -31.6
|Dec record low C = -44.2
|year record low C = -46.2
|precipitation colour = green
|Jan precipitation mm = 37.5
|Feb precipitation mm = 25.6
|Mar precipitation mm = 25.1
|Apr precipitation mm = 24.2
|May precipitation mm = 25.1
|Jun precipitation mm = 38.0
|Jul precipitation mm = 37.2
|Aug precipitation mm = 37.6
|Sep precipitation mm = 41.3
|Oct precipitation mm = 58.2
|Nov precipitation mm = 42.3
|Dec precipitation mm = 38.1
|year precipitation mm =
|Jan snow depth cm = 60
|Feb snow depth cm = 75
|Mar snow depth cm = 87
|Apr snow depth cm = 72
|May snow depth cm = 1
|Jun snow depth cm = 0
|Jul snow depth cm = 0
|Aug snow depth cm = 0
|Sep snow depth cm = 0
|Oct snow depth cm = 7
|Nov snow depth cm = 26
|Dec snow depth cm = 43
|year snow depth cm = 90
|source 1 = SMHI Open Data<ref>{{cite web
| url = https://www.smhi.se/data/meteorologi/ladda-ner-meteorologiska-observationer#param=precipitationMonthlySum,stations=all,stationid=115230
|title = SMHI Open Data precipitation for Edsbyn A
| publisher = [[Swedish Meteorological and Hydrological Institute]] | language = sv}}</ref>
|source 2 = SMHI Open Data<ref>{{cite web
| url = https://www.smhi.se/data/meteorologi/ladda-ner-meteorologiska-observationer#param=airTemperatureMinAndMaxOnceEveryDay,stations=all,stationid=115230
|title = SMHI Open data temperature for Edsbyn A
| publisher = SMHI | date = 23 January 2022 |language = sv}}</ref>
|date = December 2021}}

Seasonal averages:

{{climate chart
| Winter
|-15.2|-8.1|38.1
|-17.2|-9.5|38.1
|-17.8|-10.0|38.1
|-18.4|-10.5|38.1
|-18.9|-11.0|37.5
|-19.5|-11.5|37.5
|-19.8|-11.6|37.5
|-19.4|-11.2|37.5
|-19.0|-10.5|25.6
|-18.4|-10.0|25.6
|-17.0|-8.5|25.6
|-15.5|-7.1|25.6
|float = left
|clear = none
|units = metric
|source = NOAA<ref name="Järvsö Weatherbox NOAA txt"/>
}}

{{climate chart
| Spring
|-14.1|-5.6|25.1
|-12.6|-4.1|25.1
|-10.0|-1.5|25.1
|-7.5|1.2|25.1
|-4.9|3.8|24.2
|-2.3|6.4|24.2
|-0.4|8.7|24.2
|1.5|11.0|24.2
|3.3|13.2|25.1
|5.2|15.5|25.1
|6.8|17.1|25.1
|8.3|18.7|25.1
|float = left
|clear = none
|units = metric
|source = NOAA<ref name="Järvsö Weatherbox NOAA txt"/>
}}

{{climate chart
| Summer
|9.9|20.2|38.0
|11.4|21.8|38.0
|12.0|22.5|38.0
|12.5|23.2|38.0
|13.1|23.8|37.2
|13.6|24.5|37.2
|13.8|24.7|37.2
|13.4|24.0|37.2
|13.0|23.5|37.6
|12.4|22.9|37.6
|11.1|21.2|37.6
|9.9|19.5|37.6
|float = left
|clear = none
|units = metric
|source = NOAA<ref name="Järvsö Weatherbox NOAA txt"/>
}}

{{climate chart
| Fall
|8.6|17.7|41.3
|7.3|16.0|41.3
|5.4|13.5|41.3
|3.5|11.0|41.3
|1.6|8.5|58.2
|-0.3|6.0|58.2
|-2.6|3.6|58.2
|-4.8|1.1|58.2
|-6.6|-1.4|42.3
|-9.3|-3.8|42.3
|-11.3|-5.2|42.3
|-13.3|-6.7|42.3
|float = left
|clear = none
|units = metric
|source = NOAA<ref name="Järvsö Weatherbox NOAA txt"/>
}}

Temperature change across the seasons.

== Grand Rapids climate ==

=== Gulf stream collapse ===

{{climate chart
| Grand Rapids
|-12.4|-5.6|64
|-11.9|-4.1|54
|-5.8|3.9|61
|1.9|13.3|101
|9.2|21.0|102
|14.6|26.3|100
|16.9|28.4|98
|16.2|27.2|90
|11.7|23.3|87
|4.7|14.9|102
|-2.6|5.4|79
|-9.1|-2.7|63
|float =
|clear =
|units = metric
|source = NOAA<ref name="Grand Rapids Weatherbox NOAA txt"/>
}}

Grand Rapids has a hot-summer [[humid continental climate]] (''Dfa'') according to the [[Köppen climate classification]], and like most of the [[Midwest]] features vast seasonal differences. Summers are hot and humid, with highs usually hovering between {{convert|26|and|29|C}}, though humidity often making it feel quite a bit hotter. Heatwaves feature highs in the 30s °C (90s °C), driving heat indices upwards of {{convert|40|C}}, while cooler days see highs in the lower 20s °C (70s °F). Nights are pleasantly cool, typically dropping to {{convert|14|to|17|C}}, though can on the coolest nights drop to or below {{convert|10|C}}. During heatwaves, however, nights can get muggy, with tropical nights above {{convert|20|C}}. On average, 96 days a year feature highs above {{convert|25|C}} and 23 above {{convert|30|C}}.

Winters are cold and very snowy, courtesy of the city's location in the [[snow belt]]. Highs usually hover at {{convert|-2|to|-6|C}}, while nights fall to {{convert|-8|to|-13|C}}. Thaws can occur from time to time, but are very brief, seeing highs rise to {{convert|3|to|7|C}}, though nights remain below freezing. Cold snaps moving south from Canada can be brutal with highs staying below {{convert|-10|C}} or even {{convert|-20|C}}. Meanwhile, lows fall to {{convert|-20|to|-27|C}}, with temperatures below {{convert|-30|C}} occurring about once every three years. On average, the mercury stays below the freezing mark for 82 days of the year. The [[Grand River (Michigan)|Grand River]] freezes over in late November and breaks up in mid-March, while snow cover typically lasts from early December to mid-to-late March.

Spring and fall are rather short, bringing crisp and changeable weather. Spring begins in mid-March, seeing surges of warm, humid air from the [[Gulf of Mexico]] battling with the cold, dry Arctic air to the north. This is when the risk of [[tornado|tornadoes]] is at its greatest. While Michigan lies outside the general [[Tornado Alley]], the aforementioned changes in air masses does nonetheless at times yield conditions suitable for tornado activity. Nature begins to leaf out in mid-April, with meteorological summer arriving in late April. True summer-like temperatures begin to settle in during mid-May. Summer then lasts through September, with meteorological fall arriving in mid-October. [[Fall foliage]] can be seen from late September to early November, typically peaking in mid-October. The increasing influence of Arctic air in the later stages of fall typically results in the first snow of the season falling in early November. Winter arrives during the second half of November, with freeze-thaw cycles repeating through the end of the month into early December when sub-zero temperatures take hold.

The highest recorded temperature at the airport was {{convert|42|C}} on July 13, 1936, which also happened to be the hottest month on record with a mean of {{convert|28.0|C}}. The [[Dust Bowl]] was known for its heatwaves, and a whopping 51 days in a row saw highs above {{convert|30|C}} that summer. The hottest daily low was {{convert|28|C}} on July 16, 1902. Conversely, the lowest temperature on record was {{convert|-36|C}} on February 13-14, 1899, which also saw the coldest daily high of {{convert|-26|C}}. The coldest month ever, on the other hand, was January 1977, with a mean of {{convert|-18.6|C}}. The longest streak of sub-zero temperatures reached 109 days from November 23, 1989, to March 12, 1990.

Annual precipitation amounts to right around {{convert|1000|mm|abbr=on}}, with the largest amounts falling in the spring and early summer, with another peak in October. The spring thaw can occasionally lead to flooding along the Grand River, though downstream locations are more susceptible, especially on cold nights due to the potential for overnight ice accretion. Snowfall amounts to roughly {{convert|260|cm|abbr=on}}. Starting in November, [[lake-effect snow]] bands frequently blow in from [[Lake Michigan]], growing especially powerful in December and January. As the lake freezes, these then become weaker, though snowfall remains high with particularly heavy events generated by [[Alberta clipper|Alberta clippers]] and [[Panhandle hook|Panhandle hooks]]. The largest of these events took place on December 16, 2016, when a powerful lake-effect cell dropped over {{convert|120|cm|abbr=on}} on the city over the course of 24 hours. This contributed to 2016-17 becoming the snowiest season on record, with {{convert|423|cm|abbr=on}}. Snowfall is heaviest from November to March, but can be expected a few days in April, with only occasional falls in October. Snow depth peaks during the second half of February, just prior to the spring thaw, usually reaching around {{convert|60|cm|abbr=on}}, though the record from February 2017 stands at {{convert|158|cm|abbr=on}}. The longest continuous snow cover lasted 150 days from November 17, 1989, to April 15, 1990.

{{Weather box|location=Grand Rapids, Michigan ([[Gerald R. Ford International Airport|Gerald Ford Int'l]]), 1991–2020 normals, extremes 1892−present{{efn|Official records for Grand Rapids kept June 1892 to December 1940 at downtown, at the [[Gerald R. Ford International Airport#History|first Grand Rapids Airport]] some {{convert|4|mi|abbr=on}} south of downtown from January 1941 to November 23, 1963, and at Gerald Ford Int'l since its opening on November 24, 1963. For more information, see Threadex.<ref>[http://threadex.rcc-acis.org Threadex]</ref>}}
|single line= Y
|collapsed=
|Jan record high C = 15
|Feb record high C = 16
|Mar record high C = 28
|Apr record high C = 31
|May record high C = 35
|Jun record high C = 39
|Jul record high C = 42
|Aug record high C = 39
|Sep record high C = 37
|Oct record high C = 31
|Nov record high C = 24
|Dec record high C = 16
|year record high C =
|Jan avg record high C = 6
|Feb avg record high C = 6
|Mar avg record high C = 17
|Apr avg record high C = 25
|May avg record high C = 30
|Jun avg record high C = 33
|Jul avg record high C = 33
|Aug avg record high C = 33
|Sep avg record high C = 31
|Oct avg record high C = 25
|Nov avg record high C = 15
|Dec avg record high C = 7
|year avg record high C = 34
|Jan high C = -5.6
|Feb high C = -4.1
|Mar high C = 3.9
|Apr high C = 13.3
|May high C = 21.0
|Jun high C = 26.3
|Jul high C = 28.4
|Aug high C = 27.2
|Sep high C = 23.3
|Oct high C = 14.9
|Nov high C = 5.4
|Dec high C = -2.7
|year high C =
|Jan mean C = -9.0
|Feb mean C = -8.0
|Mar mean C = -0.9
|Apr mean C = 7.7
|May mean C = 15.1
|Jun mean C = 20.5
|Jul mean C = 22.7
|Aug mean C = 21.7
|Sep mean C = 17.5
|Oct mean C = 9.8
|Nov mean C = 1.4
|Dec mean C = -5.9
|year mean C =
|Jan low C = -12.4
|Feb low C = -11.9
|Mar low C = -5.8
|Apr low C = 1.9
|May low C = 9.2
|Jun low C = 14.6
|Jul low C = 16.9
|Aug low C = 16.2
|Sep low C = 11.7
|Oct low C = 4.7
|Nov low C = -2.6
|Dec low C = -9.1
|year low C =
|Jan avg record low C = -24
|Feb avg record low C = -23
|Mar avg record low C = -16
|Apr avg record low C = -6
|May avg record low C = 1
|Jun avg record low C = 7
|Jul avg record low C = 11
|Aug avg record low C = 9
|Sep avg record low C = 4
|Oct avg record low C = -3
|Nov avg record low C = -12
|Dec avg record low C = -19
|year avg record low C = -26
|Jan record low C = −35
|Feb record low C = −36
|Mar record low C = −28
|Apr record low C = -17
|May record low C = -6
|Jun record low C = 0
|Jul record low C = 5
|Aug record low C = 4
|Sep record low C = -3
|Oct record low C = -9
|Nov record low C = −26
|Dec record low C = −33
|year record low C = −36
|precipitation colour = green
|Jan precipitation mm = 64
|Feb precipitation mm = 54
|Mar precipitation mm = 61
|Apr precipitation mm = 101
|May precipitation mm = 102
|Jun precipitation mm = 100
|Jul precipitation mm = 98
|Aug precipitation mm = 90
|Sep precipitation mm = 87
|Oct precipitation mm = 102
|Nov precipitation mm = 79
|Dec precipitation mm = 63
|year precipitation mm =
|Jan snow cm = 68
|Feb snow cm = 56
|Mar snow cm = 39
|Apr snow cm = 8.1
|May snow cm = 0.0
|Jun snow cm = 0.0
|Jul snow cm = 0.0
|Aug snow cm = 0.0
|Sep snow cm = 0.0
|Oct snow cm = 1.3
|Nov snow cm = 28
|Dec snow cm = 63
|year snow cm =
|Jan snow depth cm = 39
|Feb snow depth cm = 53
|Mar snow depth cm = 50
|Apr snow depth cm = 6
|May snow depth cm = 0
|Jun snow depth cm = 0
|Jul snow depth cm = 0
|Aug snow depth cm = 0
|Sep snow depth cm = 0
|Oct snow depth cm = 0
|Nov snow depth cm = 9
|Dec snow depth cm = 25
|year snow depth cm = 60
|unit precipitation days = 0.2 mm
|Jan precipitation days = 16.8
|Feb precipitation days = 13.1
|Mar precipitation days = 11.8
|Apr precipitation days = 12.8
|May precipitation days = 12.5
|Jun precipitation days = 10.7
|Jul precipitation days = 10.0
|Aug precipitation days = 9.9
|Sep precipitation days = 10.2
|Oct precipitation days = 12.5
|Nov precipitation days = 12.9
|Dec precipitation days = 15.5
|year precipitation days = 148.7
|unit snow days = 0.2 cm
|Jan snow days = 15.9
|Feb snow days = 11.5
|Mar snow days = 7.9
|Apr snow days = 2.8
|May snow days = 0.0
|Jun snow days = 0.0
|Jul snow days = 0.0
|Aug snow days = 0.0
|Sep snow days = 0.0
|Oct snow days = 0.7
|Nov snow days = 5.5
|Dec snow days = 13.9
|year snow days = 50.9
|Jan humidity = 77.2
|Feb humidity = 74.2
|Mar humidity = 71.1
|Apr humidity = 66.8
|May humidity = 65.4
|Jun humidity = 68.1
|Jul humidity = 69.6
|Aug humidity = 73.3
|Sep humidity = 76.1
|Oct humidity = 74.6
|Nov humidity = 76.9
|Dec humidity = 79.5
|year humidity = 72.7
|Jan sun = 88.3
|Feb sun = 116.0
|Mar sun = 168.2
|Apr sun = 210.2
|May sun = 255.9
|Jun sun = 286.8
|Jul sun = 296.5
|Aug sun = 264.2
|Sep sun = 206.0
|Oct sun = 152.4
|Nov sun = 82.0
|Dec sun = 62.1
|Jan percentsun = 30
|Feb percentsun = 39
|Mar percentsun = 45
|Apr percentsun = 52
|May percentsun = 56
|Jun percentsun = 62
|Jul percentsun = 64
|Aug percentsun = 61
|Sep percentsun = 55
|Oct percentsun = 45
|Nov percentsun = 28
|Dec percentsun = 22
|year percentsun = 49
|source 1 = [[NOAA]] (relative humidity and sun 1961−1990)<ref name=GrandRapidsNOAA>{{cite web |url = https://w2.weather.gov/climate/xmacis.php?wfo=grr |title = NowData - NOAA Online Weather Data |publisher = National Oceanic and Atmospheric Administration |access-date = May 8, 2021 }}</ref><ref>{{cite web |archive-url = https://web.archive.org/web/20210508142949/https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USW00094860&format=pdf |archive-date = May 8, 2021 |url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USW00094860&format=pdf |publisher = National Oceanic and Atmospheric Administration |title = Station: Grand Rapids, MI |access-date = May 8, 2021 }}</ref><ref>{{cite web |url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP4/72635.TXT |title = WMO Climate Normals for Grand Rapids/Kent Co. Int'l Ar., MI 1961–1990 |publisher = National Oceanic and Atmospheric Administration |access-date = March 10, 2014 }}</ref>
|date=February 2014}}<section end="weather box"/>

Seasonal averages:

{{climate chart
| Winter
|-7.5|-0.7|63
|-9.1|-2.7|63
|-9.9|-3.4|63
|-10.8|-4.2|63
|-11.6|-4.9|64
|-12.4|-5.6|64
|-13.0|-5.8|64
|-12.8|-5.3|64
|-12.4|-4.7|54
|-11.9|-4.1|54
|-10.4|-2.1|54
|-8.9|-0.1|54
|float = left
|clear = none
|units = metric
|source = NOAA<ref name="Grand Rapids Weatherbox NOAA txt"/>
}}

{{climate chart
| Spring
|-7.3|1.9|61
|-5.8|3.9|61
|-3.9|6.3|61
|-2.0|8.6|61
|0.0|11.0|101
|1.9|13.3|101
|3.7|15.2|101
|5.6|17.2|101
|7.4|19.1|102
|9.2|21.0|102
|10.6|22.3|102
|11.9|23.7|102
|float = left
|clear = none
|units = metric
|source = NOAA<ref name="Grand Rapids Weatherbox NOAA txt"/>
}}

{{climate chart
| Summer
|13.3|25.0|100
|14.6|26.3|100
|15.2|26.8|100
|15.8|27.4|100
|16.3|27.9|98
|16.9|28.4|98
|17.2|28.7|98
|17.1|28.3|98
|16.7|27.8|90
|16.2|27.2|90
|15.1|26.2|90
|14.0|25.3|90
|float = left
|clear = none
|units = metric
|source = NOAA<ref name="Grand Rapids Weatherbox NOAA txt"/>
}}

{{climate chart
| Fall
|12.8|24.3|87
|11.7|23.3|87
|10.0|21.2|87
|8.2|19.1|87
|6.5|17.0|102
|4.7|14.9|102
|2.9|12.5|102
|1.1|10.2|102
|-0.8|7.8|79
|-2.6|5.4|79
|-4.2|3.4|79
|-5.9|1.4|79
|float = left
|clear = none
|units = metric
|source = NOAA<ref name="Grand Rapids Weatherbox NOAA txt"/>
}}

Temperature change across the seasons.

Revision as of 10:26, 25 March 2024

Frankfurt climate

Gulf stream collapse

Frankfurt has a humid continental climate (Dfa) according to the Köppen climate classification. Owing to its location in the Upper Rhine Valley, it ranks among Germany's hottest cities, along with Freiburg and Karlsruhe. Summers are hot and humid, with average highs of around 27 to 30 °C (81 to 86 °F). Nights in the suburbs and outskirts of the city offer some relief from daytime heat, with temperatures between 16 and 18 °C (61 and 64 °F), though lower in the Taunus mountains and higher in the downtown area. Heatwaves occur every summer, and can at times be severe, as temperatures soar to around 40 °C (104 °F). Nights during such conditions provide little relief, as tropical nights are the norm with lows above 20 °C (68 °F), averaging 32 such instances a year. In downtown Frankfurt, these conditions are exacerbated due to the urban heat island effect, and the inner city is plagued by nighttime lows as much as 5°C higher than its surroundings. Some locals take up residence in the mountains to escape the heat. Powerful thunderstorms often mark the end of such heatwaves, which, if coupled with drought conditions, can lead to flash flooding. Still, cooler days with highs of 20 to 25 °C (68 to 77 °F) occur from time to time, with lows falling into the lower teens °C (50s °F). Sunshine is then often mixed with passing showers that produce most non-thunderstorm summer rainfall. On average, there are 104 days with highs at or above 25 °C (77 °F) and 37 above 30 °C (86 °F). There are typically 1-3 days when the mercury reaches 40 °C (104 °F). Overall, highs generally remain above 20 °C (68 °F) from early May to late September.

Winters are cold and snowy. Though relatively mild by German standards, Frankfurt's inland position still renders it colder than the Ruhr. Daytime highs remain below 0 °C (32 °F) for an average of 82 days, and generally do so from early December to mid-February. Typical conditions see highs hover around −1 to −3 °C (30 to 27 °F), with nights falling to −7 to −11 °C (19 to 12 °F). Thaws occur from time to time when intrusions of mild, Atlantic air move in from France, but such spells are usually brief, lasting only a few days. Cold snaps also occur with daytime temperatures below −10 °C (14 °F) on 4 days and nights pushing −20 °C (−4 °F) or lower on 5 days. Still, these are usually fairly brief when compared to locations in Bavaria or former East Germany. Snow cover typically settles by mid-December, sticking until early March. The Main usually freezes over in early December, allowing for ice skating during the Christmas holidays. It begins to break up in early March. Spring flooding occasionally occurs, but thanks to the Main's smaller volume, such floods are nowhere near as severe as those along the Rhine.

Spring and fall are fairly short transitional seasons, though tend to feature relatively stable weather conditions. Frankfurt is among the first German cities to welcome spring in the first half of March, and, unlike large portions of northern Germany, spring cold snaps are rare. Starting in late February, temperatures steadily rise, and nature blossoms out in early April. Meteorological summer arrives in late April, though true summer conditions typically wait until mid-May. Summer conditions linger through September into early October, with fall arriving in mid-October. Fall foliage can typically be observed from the second week of October to early November. Frankfurt often sees Indian summers, with brief returns of summer-like warmth possible through the end of October. Compared to spring, fall can often see a much more rapid decline in temperature, as the first snowfall is seen in early November, with winter arriving by late November.

The highest recorded temperature in Frankfurt was 43.2 °C (109.8 °F) on July 29, 2012. The hottest month on record was the following August, which had a mean temperature of 27.6 °C (81.7 °F). That month, 8 consecutive days featured highs above 40 °C (104 °F), August 5-13, and the highest recorded daily minimum of 29.1 °C (84.4 °F) happened on August 20. The coldest recorded temperature was −31.6 °C (−24.9 °F) on January 8, 1942, while the lowest daily maximum was −23.2 °C (−9.8 °F) on January 12, 1987. The coldest month was January 1987, with a mean of −13.8 °C (7.2 °F). The longest streak of sub-zero temperatures was 111 days from November 16, 1941, to March 6, 1942.

Annual precipitation amounts to 502.7 mm (19.79 in), a fairly low amount by German standards. While the Main usually supplies a surplus of water to the region, extended droughts can put stress on both regional agriculture and trade as river levels drop. Snowfall amounts to 108 cm (43 in), largely concentrated from November to February, but heavy snowfalls occasionally occur in March as well. Snow in October and April is rare, and amounts are very limited. The snowiest day on record, February 3, 1979, saw 76 cm (30 in) accumulate, impeding traffic for weeks in some mountainside locations. This was one of the main reasons that 1978-79 became the snowiest season on record with a total of 203 cm (80 in). Typically, snow cover peaks at around 40 cm (16 in) in mid-February, before the spring thaw, with a record depth set at 121 cm (48 in) on February 16, 1997. The longest continuous snow cover lasted 143 days from November 10, 1924 to April 1, 1925.


Frankfurt
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
42
 
 
−3
−9
 
 
30
 
 
−1
−10
 
 
25
 
 
6
−4
 
 
30
 
 
15
4
 
 
51
 
 
22
11
 
 
52
 
 
27
17
 
 
43
 
 
30
19
 
 
57
 
 
29
18
 
 
40
 
 
23
12
 
 
37
 
 
14
6
 
 
41
 
 
3
−2
 
 
54
 
 
−1
−8
█ Average max. and min. temperatures in °C
█ Precipitation totals in mm
Source: NOAA[1]
Imperial conversion
JFMAMJJASOND
 
 
1.7
 
 
27
15
 
 
1.2
 
 
30
14
 
 
1
 
 
42
26
 
 
1.2
 
 
60
39
 
 
2
 
 
71
51
 
 
2
 
 
81
62
 
 
1.7
 
 
85
65
 
 
2.2
 
 
85
65
 
 
1.6
 
 
73
54
 
 
1.5
 
 
56
42
 
 
1.6
 
 
38
28
 
 
2.1
 
 
29
18
█ Average max. and min. temperatures in °F
█ Precipitation totals in inches
Climate data for Frankfurt Airport
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 9.9
(49.8) 		13.1
(55.6) 		22.7
(72.9) 		30.3
(86.5) 		34.2
(93.6) 		42.3
(108.1) 		43.2
(109.8) 		41.7
(107.1) 		33.8
(92.8) 		28.0
(82.4) 		17.1
(62.8) 		10.3
(50.5) 		43.2
(109.8)
Mean maximum °C (°F) 4.1
(39.4) 		5.8
(42.4) 		15.0
(59.0) 		24.8
(76.6) 		29.9
(85.8) 		35.5
(95.9) 		37.1
(98.8) 		36.5
(97.7) 		28.8
(83.8) 		22.0
(71.6) 		12.6
(54.7) 		4.5
(40.1) 		38.6
(101.5)
Mean daily maximum °C (°F) −2.7
(27.1) 		−1.2
(29.8) 		5.8
(42.4) 		15.4
(59.7) 		21.6
(70.9) 		27.4
(81.3) 		29.7
(85.5) 		29.3
(84.7) 		22.7
(72.9) 		13.5
(56.3) 		3.3
(37.9) 		−1.4
(29.5) 		13.6
(56.5)
Daily mean °C (°F) −5.9
(21.4) 		−5.5
(22.1) 		1.2
(34.2) 		9.8
(49.6) 		16.1
(61.0) 		22.1
(71.8) 		24.1
(75.4) 		23.7
(74.7) 		17.5
(63.5) 		9.7
(49.5) 		0.7
(33.3) 		−5.5
(22.1) 		9.0
(48.2)
Mean daily minimum °C (°F) −9.3
(15.3) 		−9.9
(14.2) 		−3.6
(25.5) 		4.1
(39.4) 		10.6
(51.1) 		16.7
(62.1) 		18.5
(65.3) 		18.1
(64.6) 		12.3
(54.1) 		5.8
(42.4) 		−2.0
(28.4) 		−7.7
(18.1) 		4.5
(40.0)
Mean minimum °C (°F) −21.1
(−6.0) 		−19.2
(−2.6) 		−12.2
(10.0) 		−3.4
(25.9) 		3.2
(37.8) 		10.0
(50.0) 		12.5
(54.5) 		11.7
(53.1) 		6.1
(43.0) 		−2.1
(28.2) 		−11.2
(11.8) 		−19.7
(−3.5) 		−23.2
(−9.8)
Record low °C (°F) −33.6
(−28.5) 		−31.6
(−24.9) 		−21.0
(−5.8) 		−9.1
(15.6) 		−1.8
(28.8) 		3.1
(37.6) 		5.8
(42.4) 		5.5
(41.9) 		0.7
(33.3) 		−8.3
(17.1) 		−19.5
(−3.1) 		−29.0
(−20.2) 		−33.6
(−28.5)
Average precipitation mm (inches) 42.4
(1.67) 		29.7
(1.17) 		24.8
(0.98) 		30.2
(1.19) 		51.2
(2.02) 		51.9
(2.04) 		43.0
(1.69) 		57.4
(2.26) 		39.6
(1.56) 		36.9
(1.45) 		41.1
(1.62) 		54.3
(2.14) 		502.7
(19.79)
Average extreme snow depth cm (inches) 32.9
(13.0) 		38.6
(15.2) 		27.0
(10.6) 		0.2
(0.1) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0.2
(0.1) 		9.6
(3.8) 		21.3
(8.4) 		42.4
(16.7)
Average rainy days 1 1 4 6 8 8 8 9 6 9 4 2 66
Average snowy days 10 7 3 0 0 0 0 0 0 0 4 10 34
Mean monthly sunshine hours 53 103 184 247 277 269 288 266 218 120 67 41 2,133
Source 1: wetteronline.de (high and low temperature and rain days data)[2]
Source 2: weatheronline.de (sunshine, mean temperature and precipitation data)[3]

Seasonal averages:

Winter
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
54
 
 
0
−6
 
 
54
 
 
−1
−8
 
 
54
 
 
−2
−8
 
 
54
 
 
−2
−9
 
 
42
 
 
−3
−9
 
 
42
 
 
−3
−9
 
 
42
 
 
−3
−10
 
 
42
 
 
−2
−10
 
 
30
 
 
−2
−10
 
 
30
 
 
−1
−10
 
 
30
 
 
1
−8
 
 
30
 
 
2
−7
█ Average max. and min. temperatures in °C
█ Precipitation totals in mm
Source: NOAA[1]
Imperial conversion
JFMAMJJASOND
 
 
2.1
 
 
32
21
 
 
2.1
 
 
29
18
 
 
2.1
 
 
29
17
 
 
2.1
 
 
28
17
 
 
1.7
 
 
27
16
 
 
1.7
 
 
27
15
 
 
1.7
 
 
28
14
 
 
1.7
 
 
28
14
 
 
1.2
 
 
29
14
 
 
1.2
 
 
30
14
 
 
1.2
 
 
33
17
 
 
1.2
 
 
36
20
█ Average max. and min. temperatures in °F
█ Precipitation totals in inches
Spring
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
25
 
 
4
−5
 
 
25
 
 
6
−4
 
 
25
 
 
8
−2
 
 
25
 
 
11
0
 
 
30
 
 
13
2
 
 
30
 
 
15
4
 
 
30
 
 
17
6
 
 
30
 
 
19
7
 
 
51
 
 
20
9
 
 
51
 
 
22
11
 
 
51
 
 
23
12
 
 
51
 
 
25
14
█ Average max. and min. temperatures in °C
█ Precipitation totals in mm
Source: NOAA[1]
Imperial conversion
JFMAMJJASOND
 
 
1
 
 
39
23
 
 
1
 
 
42
26
 
 
1
 
 
47
29
 
 
1
 
 
51
33
 
 
1.2
 
 
56
36
 
 
1.2
 
 
60
39
 
 
1.2
 
 
63
42
 
 
1.2
 
 
65
45
 
 
2
 
 
68
48
 
 
2
 
 
71
51
 
 
2
 
 
74
54
 
 
2
 
 
76
57
█ Average max. and min. temperatures in °F
█ Precipitation totals in inches
Summer
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
52
 
 
26
15
 
 
52
 
 
27
17
 
 
52
 
 
28
17
 
 
52
 
 
29
18
 
 
43
 
 
29
18
 
 
43
 
 
30
19
 
 
43
 
 
30
19
 
 
43
 
 
30
19
 
 
57
 
 
30
19
 
 
57
 
 
29
18
 
 
57
 
 
28
17
 
 
57
 
 
26
15
█ Average max. and min. temperatures in °C
█ Precipitation totals in mm
Source: NOAA[1]
Imperial conversion
JFMAMJJASOND
 
 
2
 
 
79
60
 
 
2
 
 
81
62
 
 
2
 
 
82
63
 
 
2
 
 
83
64
 
 
1.7
 
 
85
65
 
 
1.7
 
 
85
65
 
 
1.7
 
 
86
66
 
 
1.7
 
 
86
66
 
 
2.3
 
 
85
65
 
 
2.3
 
 
85
65
 
 
2.3
 
 
82
62
 
 
2.3
 
 
79
59
█ Average max. and min. temperatures in °F
█ Precipitation totals in inches
Fall
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
40
 
 
24
14
 
 
40
 
 
23
12
 
 
40
 
 
20
11
 
 
40
 
 
18
9
 
 
37
 
 
16
7
 
 
37
 
 
14
6
 
 
37
 
 
11
4
 
 
37
 
 
8
2
 
 
41
 
 
6
0
 
 
41
 
 
3
−2
 
 
41
 
 
2
−3
 
 
41
 
 
1
−5
█ Average max. and min. temperatures in °C
█ Precipitation totals in mm
Source: NOAA[1]
Imperial conversion
JFMAMJJASOND
 
 
1.6
 
 
76
57
 
 
1.6
 
 
73
54
 
 
1.6
 
 
69
51
 
 
1.6
 
 
65
48
 
 
1.5
 
 
60
45
 
 
1.5
 
 
56
42
 
 
1.5
 
 
52
39
 
 
1.5
 
 
47
35
 
 
1.6
 
 
43
32
 
 
1.6
 
 
38
28
 
 
1.6
 
 
36
26
 
 
1.6
 
 
34
23
█ Average max. and min. temperatures in °F
█ Precipitation totals in inches

Temperature change across the seasons.

Climate data for Frankfurt
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 10.2
(50.4) 		10.1
(50.2) 		9.9
(49.8) 		9.8
(49.6) 		9.3
(48.7) 		9.3
(48.7) 		9.5
(49.1) 		9.9
(49.8) 		10.8
(51.4) 		11.5
(52.7) 		12.3
(54.1) 		13.1
(55.6) 		13.1
(55.6)
Mean maximum °C (°F) 4.4
(39.9) 		4.3
(39.7) 		4.1
(39.4) 		4.0
(39.2) 		3.5
(38.3) 		3.5
(38.3) 		3.7
(38.7) 		4.1
(39.4) 		4.5
(40.1) 		5.0
(41.0) 		5.4
(41.7) 		5.8
(42.4) 		7.3
(45.1)
Mean daily maximum °C (°F) −0.2
(31.6) 		−1.4
(29.5) 		−1.8
(28.8) 		−2.2
(28.0) 		−2.7
(27.1) 		−2.7
(27.1) 		−2.5
(27.5) 		−2.1
(28.2) 		−1.7
(28.9) 		−1.2
(29.8) 		0.6
(33.1) 		2.3
(36.1) 		−1.3
(29.6)
Daily mean °C (°F) −3.2
(26.2) 		−4.5
(23.9) 		−4.9
(23.2) 		−5.2
(22.6) 		−5.6
(21.9) 		−5.9
(21.4) 		−6.1
(21.0) 		−6.1
(21.0) 		−5.8
(21.6) 		−5.5
(22.1) 		−3.8
(25.2) 		−2.2
(28.0) 		−4.9
(23.2)
Mean daily minimum °C (°F) −6.3
(20.7) 		−7.7
(18.1) 		−8.1
(17.4) 		−8.5
(16.7) 		−8.9
(16.0) 		−9.3
(15.3) 		−9.8
(14.4) 		−10.1
(13.8) 		−10.1
(13.8) 		−9.9
(14.2) 		−8.3
(17.1) 		−6.8
(19.8) 		−8.6
(16.4)
Mean minimum °C (°F) −13.3
(8.1) 		−15.5
(4.1) 		−17.6
(0.3) 		−19.7
(−3.5) 		−20.2
(−4.4) 		−20.6
(−5.1) 		−21.1
(−6.0) 		−19.2
(−2.6) 		−17.5
(0.5) 		−15.7
(3.7) 		−14.0
(6.8) 		−12.2
(10.0) 		−23.2
(−9.8)
Record low °C (°F) −21.9
(−7.4) 		−24.3
(−11.7) 		−26.6
(−15.9) 		−29.0
(−20.2) 		−30.5
(−22.9) 		−32.1
(−25.8) 		−33.6
(−28.5) 		−31.6
(−24.9) 		−29.0
(−20.2) 		−26.3
(−15.3) 		−23.7
(−10.7) 		−21.0
(−5.8) 		−33.6
(−28.5)
Average precipitation mm (inches) 51.0
(2.01) 		54.3
(2.14) 		51.3
(2.02) 		48.4
(1.91) 		45.4
(1.79) 		42.4
(1.67) 		39.2
(1.54) 		36.1
(1.42) 		32.9
(1.30) 		29.7
(1.17) 		28.5
(1.12) 		27.3
(1.07) 		486.5
(19.16)
Average extreme snow depth cm (inches) 12.5
(4.9) 		15.5
(6.1) 		18.4
(7.2) 		21.3
(8.4) 		24.2
(9.5) 		27.1
(10.7) 		30.0
(11.8) 		32.9
(13.0) 		35.8
(14.1) 		38.6
(15.2) 		32.8
(12.9) 		27.0
(10.6) 		42.4
(16.7)
Mean monthly sunshine hours 48 41 36 41 47 53 66 78 91 103 123 144 871
Source 1: SMHI Average Precipitation 1961–1990[4]
Source 2: SMHI Average Data 2002–2015[5]
Climate data for Frankfurt
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 15.5
(59.9) 		17.9
(64.2) 		20.3
(68.5) 		22.7
(72.9) 		24.6
(76.3) 		26.5
(79.7) 		28.4
(83.1) 		30.3
(86.5) 		31.3
(88.3) 		32.3
(90.1) 		33.2
(91.8) 		34.2
(93.6) 		34.2
(93.6)
Mean maximum °C (°F) 8.1
(46.6) 		10.4
(50.7) 		12.7
(54.9) 		15.0
(59.0) 		17.5
(63.5) 		19.9
(67.8) 		22.4
(72.3) 		24.8
(76.6) 		26.1
(79.0) 		27.4
(81.3) 		28.6
(83.5) 		29.9
(85.8) 		31.4
(88.5)
Mean daily maximum °C (°F) 4.1
(39.4) 		5.8
(42.4) 		8.2
(46.8) 		10.6
(51.1) 		13.0
(55.4) 		15.4
(59.7) 		17.0
(62.6) 		18.5
(65.3) 		20.1
(68.2) 		21.6
(70.9) 		23.1
(73.6) 		24.5
(76.1) 		15.2
(59.3)
Daily mean °C (°F) −0.5
(31.1) 		1.2
(34.2) 		3.4
(38.1) 		5.5
(41.9) 		7.7
(45.9) 		9.8
(49.6) 		11.4
(52.5) 		13.0
(55.4) 		14.5
(58.1) 		16.1
(61.0) 		17.6
(63.7) 		19.1
(66.4) 		9.9
(49.8)
Mean daily minimum °C (°F) −5.2
(22.6) 		−3.6
(25.5) 		−1.7
(28.9) 		0.3
(32.5) 		2.2
(36.0) 		4.1
(39.4) 		5.7
(42.3) 		7.4
(45.3) 		9.0
(48.2) 		10.6
(51.1) 		12.1
(53.8) 		13.7
(56.7) 		4.6
(40.2)
Mean minimum °C (°F) −10.0
(14.0) 		−7.8
(18.0) 		−5.6
(21.9) 		−3.4
(25.9) 		−1.8
(28.8) 		−0.1
(31.8) 		1.6
(34.9) 		3.2
(37.8) 		4.9
(40.8) 		6.6
(43.9) 		8.3
(46.9) 		10.0
(50.0) 		−12.1
(10.2)
Record low °C (°F) −18.0
(−0.4) 		−15.1
(4.8) 		−12.1
(10.2) 		−9.1
(15.6) 		−7.3
(18.9) 		−5.5
(22.1) 		−3.6
(25.5) 		−1.8
(28.8) 		−0.6
(30.9) 		0.7
(33.3) 		1.9
(35.4) 		3.1
(37.6) 		−18.0
(−0.4)
Average precipitation mm (inches) 26.0
(1.02) 		24.8
(0.98) 		26.2
(1.03) 		27.5
(1.08) 		28.9
(1.14) 		30.2
(1.19) 		35.5
(1.40) 		40.7
(1.60) 		46.0
(1.81) 		51.2
(2.02) 		51.4
(2.02) 		51.6
(2.03) 		440
(17.32)
Average extreme snow depth cm (inches) 13.7
(5.4) 		3.4
(1.3) 		0.5
(0.2) 		0.2
(0.1) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		13.7
(5.4)
Mean monthly sunshine hours 164 184 200 216 231 247 255 262 270 277 275 273 2,854
Source 1: SMHI Average Precipitation 1961–1990[4]
Source 2: SMHI Average Data 2002–2015[5]
Climate data for Frankfurt
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 36.2
(97.2) 		38.3
(100.9) 		40.3
(104.5) 		42.3
(108.1) 		42.6
(108.7) 		42.9
(109.2) 		43.2
(109.8) 		41.7
(107.1) 		39.7
(103.5) 		37.8
(100.0) 		35.8
(96.4) 		33.8
(92.8) 		43.2
(109.8)
Mean maximum °C (°F) 31.3
(88.3) 		32.7
(90.9) 		34.1
(93.4) 		35.5
(95.9) 		36.0
(96.8) 		36.6
(97.9) 		37.1
(98.8) 		36.5
(97.7) 		34.6
(94.3) 		32.7
(90.9) 		30.7
(87.3) 		28.8
(83.8) 		38.6
(101.5)
Mean daily maximum °C (°F) 26.0
(78.8) 		27.4
(81.3) 		28.0
(82.4) 		28.6
(83.5) 		29.2
(84.6) 		29.7
(85.5) 		30.0
(86.0) 		29.9
(85.8) 		29.6
(85.3) 		29.3
(84.7) 		27.7
(81.9) 		26.0
(78.8) 		28.5
(83.2)
Daily mean °C (°F) 20.6
(69.1) 		22.1
(71.8) 		22.6
(72.7) 		23.1
(73.6) 		23.6
(74.5) 		24.1
(75.4) 		24.3
(75.7) 		24.2
(75.6) 		24.0
(75.2) 		23.7
(74.7) 		22.2
(72.0) 		20.6
(69.1) 		22.9
(73.3)
Mean daily minimum °C (°F) 15.2
(59.4) 		16.7
(62.1) 		17.2
(63.0) 		17.6
(63.7) 		18.1
(64.6) 		18.5
(65.3) 		18.7
(65.7) 		18.7
(65.7) 		18.5
(65.3) 		18.1
(64.6) 		16.7
(62.1) 		15.2
(59.4) 		17.4
(63.4)
Mean minimum °C (°F) 10.6
(51.1) 		11.3
(52.3) 		11.9
(53.4) 		12.5
(54.5) 		13.0
(55.4) 		13.4
(56.1) 		13.6
(56.5) 		13.6
(56.5) 		13.1
(55.6) 		12.7
(54.9) 		12.2
(54.0) 		11.7
(53.1) 		8.5
(47.3)
Record low °C (°F) 3.8
(38.8) 		4.5
(40.1) 		5.1
(41.2) 		5.8
(42.4) 		6.3
(43.3) 		6.7
(44.1) 		6.9
(44.4) 		6.9
(44.4) 		6.6
(43.9) 		6.2
(43.2) 		5.9
(42.6) 		5.5
(41.9) 		3.8
(38.8)
Average precipitation mm (inches) 51.7
(2.04) 		51.9
(2.04) 		49.7
(1.96) 		47.5
(1.87) 		45.3
(1.78) 		43.0
(1.69) 		46.6
(1.83) 		50.2
(1.98) 		53.8
(2.12) 		57.4
(2.26) 		53.0
(2.09) 		48.5
(1.91) 		598.6
(23.57)
Average extreme snow depth cm (inches) 0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0)
Mean monthly sunshine hours 271 269 282 292 290 288 283 277 272 266 254 242 3,286
Source 1: SMHI Average Precipitation 1961–1990[4]
Source 2: SMHI Average Data 2002–2015[5]
Climate data for Frankfurt
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 32.4
(90.3) 		30.9
(87.6) 		29.5
(85.1) 		28.0
(82.4) 		25.3
(77.5) 		22.6
(72.7) 		19.8
(67.6) 		17.1
(62.8) 		15.4
(59.7) 		13.7
(56.7) 		12.0
(53.6) 		10.3
(50.5) 		32.4
(90.3)
Mean maximum °C (°F) 27.1
(80.8) 		25.4
(77.7) 		23.7
(74.7) 		22.0
(71.6) 		19.7
(67.5) 		17.3
(63.1) 		15.0
(59.0) 		12.6
(54.7) 		10.6
(51.1) 		8.6
(47.5) 		6.5
(43.7) 		4.5
(40.1) 		28.6
(83.5)
Mean daily maximum °C (°F) 24.4
(75.9) 		22.7
(72.9) 		20.4
(68.7) 		18.1
(64.6) 		15.8
(60.4) 		13.5
(56.3) 		11.0
(51.8) 		8.4
(47.1) 		5.9
(42.6) 		3.3
(37.9) 		2.1
(35.8) 		1.0
(33.8) 		12.2
(54.0)
Daily mean °C (°F) 19.1
(66.4) 		17.5
(63.5) 		15.6
(60.1) 		13.6
(56.5) 		11.7
(53.1) 		9.7
(49.5) 		7.5
(45.5) 		5.2
(41.4) 		3.0
(37.4) 		0.7
(33.3) 		−0.6
(30.9) 		−1.9
(28.6) 		8.4
(47.2)
Mean daily minimum °C (°F) 13.8
(56.8) 		12.3
(54.1) 		10.7
(51.3) 		9.1
(48.4) 		7.4
(45.3) 		5.8
(42.4) 		3.9
(39.0) 		1.9
(35.4) 		−0.1
(31.8) 		−2.0
(28.4) 		−3.4
(25.9) 		−4.9
(23.2) 		4.5
(40.2)
Mean minimum °C (°F) 10.3
(50.5) 		8.9
(48.0) 		7.5
(45.5) 		6.1
(43.0) 		4.1
(39.4) 		2.0
(35.6) 		−0.1
(31.8) 		−2.1
(28.2) 		−4.4
(24.1) 		−6.7
(19.9) 		−8.9
(16.0) 		−11.2
(11.8) 		−13.3
(8.1)
Record low °C (°F) 4.3
(39.7) 		3.1
(37.6) 		1.9
(35.4) 		0.7
(33.3) 		−1.6
(29.1) 		−3.8
(25.2) 		−6.1
(21.0) 		−8.3
(17.1) 		−11.1
(12.0) 		−13.9
(7.0) 		−16.7
(1.9) 		−19.5
(−3.1) 		−19.5
(−3.1)
Average precipitation mm (inches) 44.1
(1.74) 		39.6
(1.56) 		38.9
(1.53) 		38.3
(1.51) 		37.6
(1.48) 		36.9
(1.45) 		38.0
(1.50) 		39.0
(1.54) 		40.1
(1.58) 		41.1
(1.62) 		44.4
(1.75) 		47.7
(1.88) 		485.7
(19.14)
Average extreme snow depth cm (inches) 0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0
(0) 		0.2
(0.1) 		2.6
(1.0) 		4.9
(1.9) 		7.3
(2.9) 		9.6
(3.8) 		13.4
(5.3)
Mean monthly sunshine hours 230 218 194 169 145 120 107 94 80 67 61 54 1,539
Source 1: SMHI Average Precipitation 1961–1990[4]
Source 2: SMHI Average Data 2002–2015[5]
  1. ^ a b c d e Cite error: The named reference Frankfurt Weatherbox NOAA txt was invoked but never defined (see the help page).
  2. ^ "Klima in der Region Frankfurt am Main". wetteronline.de. Archived from the original on 18 January 2020. Retrieved 18 January 2021.
  3. ^ "Sonnenstunden gesamt 2010-2020". weatheronline.de. Retrieved 18 January 2021.
  4. ^ a b c d "Precipitation Averages 1961–90". SMHI. February 2016. Archived from the original on 28 September 2018. Retrieved 27 February 2016.
  5. ^ a b c d "Statistics from Weather Stations" (in Swedish). SMHI. February 2016. Archived from the original on 20 February 2015. Retrieved 27 February 2015.
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