List of Pennsylvania weather records

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Rainfall associated with Hurricane Agnes in 1972

These are the extremes in weather records for Pennsylvania, a U.S. state in the Middle Atlantic region. These extremes are based on records maintained by the National Climatic Data Center (NCDC), a division of the National Oceanographic and Atmospheric Administration.

Temperature[edit]

Overall[edit]

The state record low is −42 °F (−41 °C), recorded at Smethport on January 5, 1904, while the state record high is 111 °F (44 °C), recorded at Phoenixville on July 9 and 10, 1936.

Climate data for {{{location}}}
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 85
(29)
84
(29)
92
(33)
98
(37)
102
(39)
107
(42)
111
(44)
108
(42)
106
(41)
100
(38)
88
(31)
82
(28)
111
(44)
Record low °F (°C) −42
(−41)
−39
(−39)
−31
(−35)
−5
(−21)
10
(−12)
20
(−7)
28
(−2)
23
(−5)
17
(−8)
7
(−14)
−15
(−26)
−29
(−34)
−42
(−41)
Source: http://climate.psu.edu/data/state/staterecords.php

Precipitation[edit]

Rain[edit]

Event[1] Measurement Date Location
Greatest 24-Hour Rainfall 13.50 inches (343 mm) June 22, 1972
(during Hurricane Agnes)
York

Note: While the official measured rainfall record is given above, the NCDC notes that an estimated 34.50 inches (876 mm) of rain fell in 12 hours near Smethport on July 17, 1942. The NCDC says this is "arguably the greatest 24-hour rainfall on record outside of the tropics".[1]

Snow[edit]

Event[1] Measurement Date Location
Greatest 24-hour snowfall 40.0 inches (102 cm) March 13–14, 1993 Seven Springs
Greatest snow depth 60.0 inches (152 cm) March 22 & 23, 1958 Goldsboro

Hurricanes[edit]

Event[2] Measurement Date Location
Wettest Tropical Cyclone 19.00 inches (483 mm) Agnes (1972) Western Schuylkill County

References[edit]

  1. ^ a b c "All-Time Climate Extremes for PA". National Climatic Data Center. Retrieved November 11, 2010. 
  2. ^ David M. Roth (October 15, 2010). "Tropical Cyclone Point Maxima". National Oceanographic and Atmospheric Administration. Retrieved November 11, 2010.