Most Monthly Precipitation in Davenport History

This is a list of the largest monthly precipitation totals ever recorded in Davenport, Iowa history from 1901–2024.

What Was the Wettest Month in Davenport History?

According to NOAA records, the most precipitation that Davenport, Iowa has ever received in a single month is 15.2 inches which occurred in August 1987.

Davenport Most Rain in One Month

Rank	Precipitation	Month
1	15.2 inches	August 1987
2	14.2 inches	September 1970
3	13.2 inches	June 1993
4	11.8 inches	July 1992
5	11.4 inches	May 1974
6	11.4 inches	July 1969
7	11.3 inches	April 1973
8	11.2 inches	July 1971
9	11.1 inches	May 1970
10	11.0 inches	September 1961
11	10.9 inches	September 2008
12	10.9 inches	June 2014
13	10.9 inches	June 2015
14	9.8 inches	May 2019
15	9.6 inches	May 2001
16	9.6 inches	June 1990
17	9.3 inches	August 1965
18	9.3 inches	September 1936
19	9.2 inches	May 1996
20	9.1 inches	May 2004