Average Annual Snowfall in Illinois

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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 1981 to 2010 for the NOAA National Climatic Data Center.

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
17.5 Aurora 27.1 68.8
22.3 Chicago Botanical Garden 33.4 84.8
26.7 Chicago Midway Airport 37.1 94.2
28.5 Chicago O'Hare Airport 36.7 93.2
18.5 Elgin 29.0 73.7

Northern Illinois

Yearly snow averages
Days Place Inches Centimetres
21.1 Antioch 42.7 108.5
23.9 DeKalb 31.9 81.0
16.8 Dixon 30.2 76.7
19.0 Freeport 31.3 79.5
25.1 Moline 31.6 80.3
28.8 Rockford 36.7 93.2

Central Illinois

Average total snowfall for a year
Days Place Inches Centimetres
  8.3 Cahokia 15.1 38.4
10.8 Danville 17.9 45.5
19.9 Peoria 24.6 62.5
16.4 Quincy 22.3 56.6
16.9 Springfield 20.9 53.1
18.2 Urbana 23.2 58.9

Southern Illinois

Average annual snowfall
Days Place Inches Centimetres
  3.5 Cairo   4.4 11.2
  7.4 Marion 14.4 36.6
  6.9 Mt Vernon 13.9 35.3
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

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