Snow in Chelmsford, Massachusetts Winter storm alerts · 7-day snow forecast · average snowfall
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Chelmsford averages 59.0 inches of snow a year. The snowiest month is January (16.1″), and snow usually falls from October through April. On about 15 days a year at least an inch falls, and about 1 day brings 10 inches or more. Snow covers the ground (1″+) on roughly 68 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
October
0.1″
0
0
7
40°F
November
1.9″
1
2
20
30°F
December
13.2″
3
13
27
22°F
January
16.1″
4
20
29
16°F
February
12.5″
3
19
27
17°F
March
12.9″
3
13
25
24°F
April
2.3″
1
1
13
35°F
May
0″
0
0
1
45°F
Year
59.0″
15
68
148
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Bedford (9 mi from the city center, -128 ft elevation difference); temperatures at Lowell. Averages smooth out big years: single winters can bring half or double the normal.
59.0 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Bedford station, 9 miles away). The snowiest month is January with 16.1 inches.
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This page checks the National Weather Service for active alerts at Chelmsford'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 Chelmsford have?
About 148 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 16 °F.