Average Precipitation for Illinois in April





The tables below give monthly averages for rainfall plus snowfall during April at cities in Illinois.

Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The precipitation totals are 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.

Chicago Area

Average monthly precipitation in April
Days Place Inches Milli­metres
12 Aurora 4.1 103
13 Chicago Botanical Garden 4.0 102
12 Chicago Midway Airport 4.2 105
12 Chicago O'Hare Airport 3.8 95
13 Elgin 4.0 101
12 Joliet 3.9 100
11 Rochelle 3.4 87

Northern Illinois

April averages for total rainfall plus snowfall
Days Place Inches Milli­metres
12 DeKalb 3.6 90
10 Dixon 4.0 101
11 Freeport 3.7 93
11 Moline 3.8 97
12 Rockford 3.8 95
12 Waukegan 3.8 96

Central Illinois

Average amount of rain and snow in April
Days Place Inches Milli­metres
10 Alton 4.9 125
10 Bloomington 3.9 99
12 Cahokia 4.6 118
12 Champaign 3.9 100
12 Charleston 5.1 129
12 Danville 4.5 113
11 Decatur 4.1 105
11 Kankakee 3.9 98
12 Ottawa 3.5 90
12 Peoria 4.0 101
12 Quincy 4.0 101
12 Springfield 4.0 101

Southern Illinois

Precipitation totals for April
Days Place Inches Milli­metres
10 Belleville 4.9 124
12 Carbondale 5.6 141
11 Mt Vernon 5.0 126
Reference

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

Illinois Precipitation
Back to Top