Snow in Glendale Heights, Illinois Winter storm alerts · 7-day snow forecast · average snowfall
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Glendale Heights 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 (9 mi from the city center, -85 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, 9 miles away). The snowiest month is January with 11.3 inches.
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How many freezing nights does Glendale Heights 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.