GIS Map

Wettest Cities in Illinois

The top 25 of 70 Illinois cities on GIS Map, ranked by average annual precipitation (rain and melted snow).

#CityAverage annual precipitation
1Carbondale
49.0 in
2Marion
49.0 in
3Granite City
43.9 in
4Charleston
43.8 in
5Belleville
43.4 in
6O'Fallon
43.4 in
7Danville
43.2 in
8Calumet City
42.1 in
9Tinley Park
42.1 in
10Alton
41.9 in
11Edwardsville
41.9 in
12Kankakee
41.7 in
13Orland Park
41.4 in
14Mattoon
41.3 in
15Bolingbrook
41.1 in
16Plainfield
41.1 in
17Romeoville
41.1 in
18Champaign
40.9 in
19Champaign-Urbana
40.9 in
20Oak Lawn
40.9 in
21Urbana
40.9 in
22Collinsville
40.8 in
23East St. Louis
40.8 in
24Sterling
40.5 in
25Bloomington
40.4 in

Source: NOAA NCEI 1991-2020 U.S. Climate Normals, nearest station with complete data. Only cities covered by GIS Map with at least 1,000 residents are ranked. Estimates carry margins of error.

Citing this page: GIS Map, “Wettest Cities in Illinois”, https://gismap.land/rankings/illinois/wettest-cities. Figures from NOAA NCEI 1991-2020 U.S. Climate Normals, nearest station with complete data.