Snow in Boulder, Colorado Winter storm alerts · 7-day snow forecast · average snowfall
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Boulder averages 85.2 inches of snow a year. The snowiest month is February (17.4″), and snow usually falls from October through May. On about 21 days a year at least an inch falls, and about 1 day brings 10 inches or more.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
September
0″
0
—
1
48°F
October
6.9″
2
—
8
37°F
November
8.5″
2
—
20
28°F
December
14.2″
3
—
27
21°F
January
10.2″
3
—
27
22°F
February
17.4″
4
—
23
22°F
March
13.6″
3
—
20
29°F
April
11.9″
3
—
11
35°F
May
2.5″
1
—
2
43°F
Year
85.2″
21
—
138
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Boulder 2.9 S (2 mi from the city center, +49 ft elevation difference); temperatures at Boulder. Averages smooth out big years: single winters can bring half or double the normal.
85.2 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Boulder 2.9 S station, 2 miles away). The snowiest month is February with 17.4 inches.
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This page checks the National Weather Service for active alerts at Boulder'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 Boulder have?
About 138 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, December, averages a low of 21 °F.