Snow in Casper, Wyoming Winter storm alerts · 7-day snow forecast · average snowfall
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Casper averages 71.8 inches of snow a year. The snowiest month is December (11.0″), and snow usually falls from September through June. On about 22 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 64 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
September
1.5″
<1
<1
1
44°F
October
7.0″
2
2
13
33°F
November
8.9″
3
7
23
25°F
December
11.0″
4
16
27
17°F
January
9.0″
3
17
28
17°F
February
10.9″
3
12
25
18°F
March
10.3″
3
6
24
25°F
April
10.5″
3
3
17
31°F
May
2.6″
1
1
4
41°F
June
0.1″
0
<1
<1
50°F
Year
71.8″
22
64
163
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Casper Natrona Co Airport (8 mi from the city center, +220 ft elevation difference); temperatures at Casper Wwtp. Averages smooth out big years: single winters can bring half or double the normal.
71.8 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Casper Natrona Co Airport station, 8 miles away). The snowiest month is December with 11.0 inches.
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How many freezing nights does Casper have?
About 163 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 17 °F.