Average Temperatures for Illinois in March





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

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

The tables give the normal maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Chicago Area

Average March temperatures
High °F Low °F Place High °C Low °C
47 29 Aurora 8 -2
46 28 Chicago Botanical Garden 8 -2
48 32 Chicago Midway Airport 9 0
47 31 Chicago O'Hare Airport 8 -1
46 26 Elgin 8 -3
47 29 Joliet 8 -2
45 26 Rochelle 7 -3

Northern Illinois

Average temperatures in March
High °F Low °F Place High °C Low °C
44 27 Antioch 7 -3
45 27 DeKalb 7 -3
46 28 Dixon 8 -2
45 26 Freeport 7 -3
50 30 Moline 10 -1
47 28 Rockford 8 -2
44 27 Waukegan 7 -3

Central Illinois

Normal temperatures for March
High °F Low °F Place High °C Low °C
54 35 Alton 12 2
49 29 Bloomington 9 -2
56 36 Cahokia 14 2
50 31 Champaign 10 0
54 34 Charleston 12 1
52 32 Danville 11 0
51 33 Decatur 10 0
49 29 Kankakee 9 -1
48 29 Ottawa 9 -2
51 32 Peoria 11 0
52 32 Quincy 11 0
53 33 Springfield 12 1

Southern Illinois

Average March temperatures
High °F Low °F Place High °C Low °C
59 36 Belleville 15 2
59 38 Cairo 15 3
56 35 Carbondale 13 1
54 34 Mt Vernon 12 1
Reference

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

Illinois Temperatures
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