Snow in Missoula, Montana Winter storm alerts · 7-day snow forecast · average snowfall
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Missoula averages 43.0 inches of snow a year. The snowiest month is December (11.6″), and snow usually falls from September through May. On about 14 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 61 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
September
0.1″
0
0
2
42°F
October
0.9″
<1
1
15
32°F
November
5.4″
2
5
26
25°F
December
11.6″
3
16
30
18°F
January
9.9″
3
20
30
18°F
February
8.5″
3
14
26
21°F
March
5.0″
2
5
25
27°F
April
1.3″
1
<1
15
32°F
May
0.3″
<1
0
4
40°F
Year
43.0″
14
61
173
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Missoula Intl. Airport (6 mi from the city center, -16 ft elevation difference). Averages smooth out big years: single winters can bring half or double the normal.
43.0 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Missoula Intl. Airport station, 6 miles away). The snowiest month is December with 11.6 inches.
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This page checks the National Weather Service for active alerts at Missoula's location every time you open it; the box at the top lists any winter storm, winter weather, cold or freeze alert in effect right now.
How many freezing nights does Missoula have?
About 173 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, December, averages a low of 18 °F.