Snow in Great Falls, Montana Winter storm alerts · 7-day snow forecast · average snowfall
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Great Falls averages 66.1 inches of snow a year. The snowiest month is February (10.1″), and snow usually falls from August through June. On about 20 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 60 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
August
0.3″
<1
0
<1
50°F
September
0.8″
<1
<1
2
43°F
October
5.2″
2
3
15
33°F
November
9.2″
3
8
23
24°F
December
9.6″
3
11
27
16°F
January
9.2″
3
14
27
15°F
February
10.1″
4
11
25
15°F
March
10.1″
3
8
25
22°F
April
9.4″
2
3
18
30°F
May
1.9″
1
1
6
38°F
June
0.3″
0
<1
<1
46°F
Year
66.1″
20
60
168
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Great Falls Intl. Airport (4 mi from the city center, +338 ft elevation difference). Averages smooth out big years: single winters can bring half or double the normal.
66.1 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Great Falls Intl. Airport station, 4 miles away). The snowiest month is February with 10.1 inches.
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How many freezing nights does Great Falls have?
About 168 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 15 °F.