Most Monthly Precipitation in Charleston History

This is a list of the largest monthly precipitation totals ever recorded in Charleston, Illinois history from 1896–2024.

What Was the Wettest Month in Charleston History?

According to NOAA records, the most precipitation that Charleston, Illinois has ever received in a single month is 14.1 inches which occurred in September 1926.

Month to date though April 26, 2024: 4.3 inches

Charleston Most Rain in One Month

Rank	Precipitation	Month
1	14.1 inches	September 1926
2	14.0 inches	June 1957
3	12.2 inches	June 2018
4	11.7 inches	May 2002
5	11.6 inches	November 1985
6	10.8 inches	May 1943
7	10.6 inches	March 1945
8	10.5 inches	May 1974
9	10.4 inches	June 2000
10	10.4 inches	August 1981
11	10.4 inches	May 1933
12	10.3 inches	September 1911
13	10.1 inches	July 1987
14	10.0 inches	July 1896
15	10.0 inches	July 2020
16	10.0 inches	May 1935
17	10.0 inches	June 1945
18	9.8 inches	July 1979
19	9.8 inches	April 2011
20	9.8 inches	January 1950