Snow in Waltham, Massachusetts Winter storm alerts · 7-day snow forecast · average snowfall
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Waltham averages 49.2 inches of snow a year. The snowiest month is February (14.4″), and snow usually falls from October through April. On about 11 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
October
0.2″
<1
—
7
41°F
November
0.7″
<1
—
17
32°F
December
9.0″
2
—
26
24°F
January
14.3″
4
—
28
18°F
February
14.4″
3
—
26
19°F
March
9.0″
2
—
23
27°F
April
1.6″
<1
—
10
37°F
May
0″
0
—
1
47°F
Year
49.2″
11
—
139
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Boston Logan Intl. Airport (12 mi from the city center, -59 ft elevation difference); temperatures at Bedford Hanscom Fld. Averages smooth out big years: single winters can bring half or double the normal.
49.2 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Boston Logan Intl. Airport station, 12 miles away). The snowiest month is February with 14.4 inches.
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How many freezing nights does Waltham have?
About 139 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 18 °F.