Most Monthly Precipitation in Vermillion History

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

What Was the Wettest Month in Vermillion History?

According to NOAA records, the most precipitation that Vermillion, South Dakota has ever received in a single month is 15.0 inches which occurred in June 2018.

Month to date though April 17, 2024: 3.8 inches

Vermillion Most Rain in One Month

Rank	Precipitation	Month
1	15.0 inches	June 2018
2	12.4 inches	September 1901
3	12.0 inches	July 2010
4	11.4 inches	June 2014
5	9.9 inches	August 1937
6	9.9 inches	May 1903
7	9.6 inches	July 1907
8	9.5 inches	May 1905
9	9.1 inches	June 1999
10	8.9 inches	August 1923
11	8.5 inches	June 2005
12	8.4 inches	April 1984
13	8.3 inches	May 1990
14	8.3 inches	May 2004
15	8.2 inches	August 1951
16	8.0 inches	July 1915
17	8.0 inches	May 1972
18	7.9 inches	May 1959
18	7.9 inches	June 1934
20	7.8 inches	June 1914