Average Temperatures for Illinois in February

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Average temperatures for February at cities throughout Illinois are listed below.

The tables give the normal maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the US 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.

Chicago Area

Average February temperatures
High °F Low °F Place High °C Low °C
35 20 Aurora 2 -7
36 19 Chicago Botanical Garden 2 -7
36 22 Chicago Midway Airport 2 -6
35 20 Chicago O'Hare Airport 2 -7
38 24 Chicago University 3 -4
34 17 Elgin 1 -8
36 20 Joliet 2 -6

Northern Illinois

Average temperatures in February
High °F Low °F Place High °C Low °C
33 17 Antioch 1 -8
33 17 DeKalb 0 -8
34 16 Dixon 1 -9
34 15 Freeport 1 -9
36 18 Moline 2 -8
34 18 Rockford 1 -8
34 18 Waukegan 1 -8

Central Illinois

Normal temperatures for February
High °F Low °F Place High °C Low °C
44 26 Alton 7 -3
45 25 Cahokia 7 -4
40 23 Danville 4 -5
38 21 Peoria 3 -6
39 23 Quincy 4 -5
40 23 Springfield 4 -5
38 20 Urbana 3 -7

Southern Illinois

Average February temperatures
High °F Low °F Place High °C Low °C
48 29 Cairo 9 -2
44 25 Marion 7 -4
43 24 Mt Vernon 6 -4
Reference

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

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