Snow in Carol Stream, Illinois Winter storm alerts · 7-day snow forecast · average snowfall
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Carol Stream averages 38.4 inches of snow a year. The snowiest month is January (11.3″), and snow usually falls from October through April. On about 11 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 44 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
October
0.2″
<1
0
5
42°F
November
1.8″
1
1
17
31°F
December
7.6″
2
9
27
21°F
January
11.3″
4
16
29
16°F
February
10.7″
3
12
26
19°F
March
5.5″
2
5
21
28°F
April
1.3″
<1
1
8
38°F
May
0″
0
0
1
49°F
Year
38.4″
11
44
134
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Chicago Ohare Intl. Airport (12 mi from the city center, -115 ft elevation difference); temperatures at West Chicago Dupage Airport. Averages smooth out big years: single winters can bring half or double the normal.
38.4 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Chicago Ohare Intl. Airport station, 12 miles away). The snowiest month is January with 11.3 inches.
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How many freezing nights does Carol Stream have?
About 134 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 16 °F.