Snow in Oak Lawn, Illinois Winter storm alerts · 7-day snow forecast · average snowfall
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Oak Lawn averages 38.8 inches of snow a year. The snowiest month is January (12.5″), 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
0.1″
<1
<1
1
47°F
November
1.5″
1
1
11
35°F
December
7.9″
2
9
24
25°F
January
12.5″
4
18
27
19°F
February
10.1″
3
12
23
23°F
March
5.7″
1
4
18
32°F
April
1.0″
<1
1
3
41°F
Year
38.8″
11
44
106
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Chicago Midway Airport 3sw (2 mi from the city center, +13 ft elevation difference); temperatures at Chicago Midway Airport. Averages smooth out big years: single winters can bring half or double the normal.
38.8 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Chicago Midway Airport 3sw station, 2 miles away). The snowiest month is January with 12.5 inches.
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How many freezing nights does Oak Lawn have?
About 106 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 19 °F.