Most Monthly Precipitation in Bloomington-Normal History

This is a list of the largest monthly precipitation totals ever recorded in Bloomington-Normal, Illinois history from 1893–2024.

What Was the Wettest Month in Bloomington-Normal History?

According to NOAA records, the most precipitation that Bloomington-Normal, Illinois has ever received in a single month is 13.7 inches which occurred in July 1992.

Bloomington-Normal Most Rain in One Month

Rank	Precipitation	Month
1	13.7 inches	July 1992
2	13.5 inches	September 1961
3	13.5 inches	September 1926
4	12.8 inches	August 1924
5	12.5 inches	June 1902
6	11.0 inches	September 1993
7	10.7 inches	September 2008
8	10.4 inches	August 1921
9	10.3 inches	September 1911
10	10.2 inches	September 1986
11	10.2 inches	October 2009
12	10.2 inches	May 1908
13	10.1 inches	June 1993
14	10.1 inches	October 1941
15	9.9 inches	August 1977
16	9.8 inches	May 1943
17	9.8 inches	September 1972
18	9.5 inches	July 1981
19	9.4 inches	May 1898
20	9.4 inches	September 1965