Most Monthly Precipitation in Flandreau History

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

What Was the Wettest Month in Flandreau History?

According to NOAA records, the most precipitation that Flandreau, South Dakota has ever received in a single month is 14.3 inches which occurred in May 2004.

Month to date though April 17, 2024: 2.5 inches

Flandreau Most Rain in One Month

Rank	Precipitation	Month
1	14.3 inches	May 2004
2	11.0 inches	May 2012
3	10.4 inches	September 2010
4	10.3 inches	May 1942
5	10.2 inches	September 2019
6	10.1 inches	June 1984
7	9.8 inches	August 1902
8	9.8 inches	July 1995
9	9.6 inches	June 1993
10	9.5 inches	September 1986
11	9.4 inches	July 1993
12	9.3 inches	June 1957
13	9.1 inches	May 1908
14	9.0 inches	June 2014
15	9.0 inches	June 1905
16	8.9 inches	July 1963
17	8.8 inches	May 1972
18	8.2 inches	May 1898
19	8.2 inches	July 2011
20	7.9 inches	August 2002