Most Monthly Precipitation in Iowa Falls History

This is a list of the largest monthly precipitation totals ever recorded in Iowa Falls, Iowa history from 1893–2024.

What Was the Wettest Month in Iowa Falls History?

According to NOAA records, the most precipitation that Iowa Falls, Iowa has ever received in a single month is 15.4 inches which occurred in June 1998.

Iowa Falls Most Rain in One Month

Rank	Precipitation	Month
1	15.4 inches	June 1998
2	14.1 inches	September 1965
3	13.8 inches	June 2014
4	13.6 inches	August 1993
5	12.6 inches	June 1947
6	12.4 inches	August 1924
7	12.0 inches	June 2008
8	11.9 inches	May 2013
9	11.7 inches	June 1967
10	11.5 inches	July 2010
11	11.2 inches	July 1902
12	10.7 inches	August 2007
13	10.6 inches	June 1942
14	10.5 inches	June 1972
15	10.4 inches	July 1969
16	10.2 inches	July 1964
17	10.1 inches	June 1918
18	10.1 inches	May 1918
19	10.0 inches	June 1902
20	9.7 inches	June 1932