Most Monthly Precipitation in Yankton History

This is a list of the largest monthly precipitation totals ever recorded in Yankton, South Dakota history from 1932–2024.

What Was the Wettest Month in Yankton History?

According to NOAA records, the most precipitation that Yankton, South Dakota has ever received in a single month is 11.7 inches which occurred in May 1972.

Month to date though April 25, 2024: 2.8 inches

Yankton Most Rain in One Month

Rank	Precipitation	Month
1	11.7 inches	May 1972
2	10.2 inches	July 2010
3	9.9 inches	May 1982
4	9.7 inches	June 1941
5	9.7 inches	August 1937
6	9.6 inches	June 2014
7	9.4 inches	August 1944
8	9.3 inches	June 1943
9	8.9 inches	July 1972
10	8.8 inches	May 1959
11	8.7 inches	May 1990
12	8.0 inches	July 1978
13	7.9 inches	June 1954
14	7.9 inches	August 1951
15	7.9 inches	August 1960
16	7.8 inches	June 1951
17	7.8 inches	July 1948
18	7.5 inches	May 1942
19	7.4 inches	September 1973
20	7.3 inches	June 2018