Most Monthly Precipitation in Lead History

This is a list of the largest monthly precipitation totals ever recorded in Lead, South Dakota history from 1909–2024.

What Was the Wettest Month in Lead History?

According to NOAA records, the most precipitation that Lead, South Dakota has ever received in a single month is 15.1 inches which occurred in May 1946.

Month to date though April 25, 2024: 3.8 inches

Lead Most Rain in One Month

Rank	Precipitation	Month
1	15.1 inches	May 1946
2	14.8 inches	May 1965
3	13.5 inches	May 1962
4	12.6 inches	October 2013
5	12.4 inches	May 1909
6	12.3 inches	May 1982
7	12.2 inches	May 2013
8	11.9 inches	June 1976
9	11.0 inches	May 1922
10	10.7 inches	May 1995
11	10.0 inches	June 1964
12	10.0 inches	June 1998
13	9.4 inches	May 1952
14	9.3 inches	October 1994
15	9.3 inches	October 1998
16	9.2 inches	May 2015
17	9.2 inches	June 1947
18	9.0 inches	April 2006
19	8.9 inches	June 1941
20	8.8 inches	July 2019