Average Annual Snowfall in Illinois





The tables below give yearly averages for snowfall at cities in Illinois. The numbers are for the total amount of snow and for how many days it snows at least 0.1 inches (0.25 centimetres).

The snowfall totals are annual averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each region of the state: Chicago Area, Northern Illinois, Central Illinois and Southern Illinois.

Place name links take you to more detailed information on snowfall, snowstorms and snow accumulation for that location.

Chicago Area

Average annual snowfall
Days Place Inches Centi­metres
17.1 Aurora 27.9 70.9
22.9 Chicago Botanical Garden 33.6 85.3
28.2 Chicago Midway Airport 38.8 98.6
27.8 Chicago O'Hare Airport 38.4 97.5
21.9 Elgin 32.1 81.5
12.0 Joliet 16.9 42.9

Northern Illinois

Yearly snow averages
Days Place Inches Centi­metres
23.7 DeKalb 33.1 84.1
17.2 Dixon 31.2 79.2
20.8 Freeport 34.5 87.6
25.1 Moline 36.1 91.7
28.1 Rockford 37.1 94.2

Central Illinois

Average total snowfall for a year
Days Place Inches Centi­metres
5.0 Bloomington 6.5 16.5
17.4 Champaign 20.8 52.8
11.9 Charleston 19.0 48.3
9.9 Danville 14.8 37.6
9.6 Decatur 13.6 34.5
16.3 Kankakee 20.7 52.6
14.3 Ottawa 23.7 60.2
20.0 Peoria 26.2 66.5
16.3 Springfield 21.8 55.4

Southern Illinois

Average annual snowfall
Days Place Inches Centi­metres
7.0 Belleville 11.2 28.4
5.6 Carbondale 11.4 29.0
5.4 Mt Vernon 10.4 26.4
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Illinois Snowfall
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