Roy, Montana
Roy is an unincorporated community and a Census-designated place in Fergus County, Montana, United States. The community is located along U.S. Highway 191 in northeastern Fergus County. Although it is unincorporated, Roy has a post office, with the ZIP code of 59471.[1] As of the census[2] of 2010, there were 108 people.
Climate
Roy has a semi-arid climate (Köppen BSk) with cold winters except when moderates by chinook influences that will typically push maximum temperatures over 50 °F or 10 °C on seventeen days during winter and twelve days each in November and March. Spring is mild and frequently thundery, whilst summer days are hot – sometimes very hot – but nights are usually pleasantly cool.
Precipitation is fairly scarce, mostly coming from thunderstorms during late spring and summer, whilst snowfall averages 43 inches or 1.09 metres (the median is 30.9 inches or 0.78 metres) but significant falls occur on only a minority of winter days. However, during the cold winter of 1977–78, cover reached 56 inches or 1.42 metres on February 19 and averaged 46 inches or 1.17 metres for the whole month of February.
Climate data for Roy 8 NE, Montana (1971-2000; extremes 1948-2001) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 69 (21) |
72 (22) |
78 (26) |
90 (32) |
96 (36) |
103 (39) |
105 (41) |
107 (42) |
103 (39) |
92 (33) |
78 (26) |
69 (21) |
107 (42) |
Mean daily maximum °F (°C) | 31.7 (−0.2) |
37.8 (3.2) |
46.5 (8.1) |
57.6 (14.2) |
67.5 (19.7) |
76.9 (24.9) |
84.6 (29.2) |
84.6 (29.2) |
72.9 (22.7) |
61.1 (16.2) |
43.7 (6.5) |
34.3 (1.3) |
58.3 (14.6) |
Mean daily minimum °F (°C) | 7.7 (−13.5) |
13.1 (−10.5) |
21.9 (−5.6) |
31.0 (−0.6) |
40.3 (4.6) |
48.4 (9.1) |
53.0 (11.7) |
52.0 (11.1) |
42.0 (5.6) |
32.1 (0.1) |
19.6 (−6.9) |
10.4 (−12.0) |
31.0 (−0.6) |
Record low °F (°C) | −41 (−41) |
−39 (−39) |
−33 (−36) |
−5 (−21) |
10 (−12) |
29 (−2) |
36 (2) |
30 (−1) |
16 (−9) |
−11 (−24) |
−29 (−34) |
−41 (−41) |
−41 (−41) |
Average precipitation inches (mm) | 0.50 (13) |
0.31 (7.9) |
0.81 (21) |
1.14 (29) |
2.73 (69) |
2.30 (58) |
1.97 (50) |
1.53 (39) |
1.22 (31) |
0.73 (19) |
0.44 (11) |
0.50 (13) |
14.18 (360.9) |
Average snowfall inches (cm) | 8.1 (21) |
5.4 (14) |
8.1 (21) |
4.3 (11) |
0.9 (2.3) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.2 (0.51) |
2.3 (5.8) |
5.6 (14) |
8.1 (21) |
43 (110.61) |
Average precipitation days (≥ 0.01 in) | 4.7 | 3.6 | 6.1 | 6.2 | 9.9 | 9.9 | 7.3 | 6.8 | 6.1 | 4.4 | 4.4 | 4.7 | 74.1 |
Average snowy days (≥ 0.1 in) | 3.9 | 2.6 | 3.5 | 1.4 | 0.4 | 0.0 | 0.0 | 0.0 | 0.1 | 0.7 | 2.7 | 3.7 | 19 |
Source: NOAA[3] |
References
- ^ Zip Code Lookup
- ^ "American FactFinder". United States Census Bureau. Retrieved 2015-07-10.
- ^ "Climatography of the United States No. 20: 1971-2000 – Station: ROY 8 NE, MT" (PDF). National Oceanic and Atmospheric Administration. Retrieved September 14, 2016.