Snow in Carpentersville, Illinois Winter storm alerts · 7-day snow forecast · average snowfall
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Carpentersville averages 38.5 inches of snow a year. The snowiest month is January (12.6″), and snow usually falls from October through April. On about 13 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 64 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
5
42°F
November
2.0″
1
2
18
30°F
December
9.6″
4
15
28
20°F
January
12.6″
4
20
29
13°F
February
8.5″
3
19
27
16°F
March
4.6″
2
8
22
27°F
April
1.1″
<1
1
8
37°F
Year
38.5″
13
64
137
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Barrington 3sw (5 mi from the city center, -20 ft elevation difference). Averages smooth out big years: single winters can bring half or double the normal.
38.5 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Barrington 3sw station, 5 miles away). The snowiest month is January with 12.6 inches.
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This page checks the National Weather Service for active alerts at Carpentersville'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 Carpentersville have?
About 137 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 13 °F.