Most Monthly Precipitation in Mammoth Cave National Park History

This is a list of the largest monthly precipitation totals ever recorded in Mammoth Cave National Park, Kentucky history from 1934–2024.

What Was the Wettest Month in Mammoth Cave National Park History?

According to NOAA records, the most precipitation that Mammoth Cave National Park, Kentucky has ever received in a single month is 21.0 inches which occurred in January 1937.

Mammoth Cave National Park Most Rain in One Month

Rank	Precipitation	Month
1	21.0 inches	January 1937
2	16.4 inches	January 1950
3	15.0 inches	March 1997
4	14.1 inches	May 1995
5	13.1 inches	November 1957
6	13.0 inches	May 1983
7	12.7 inches	February 2019
8	12.7 inches	May 2010
9	12.7 inches	March 1975
10	12.5 inches	April 2011
11	12.4 inches	May 1984
12	12.4 inches	July 2016
13	12.3 inches	December 1978
14	12.1 inches	February 1989
15	11.4 inches	November 1948
16	11.4 inches	June 2019
17	11.0 inches	March 1964
18	10.9 inches	July 2022
19	10.9 inches	March 2020
20	10.7 inches	January 1951
20	10.7 inches	July 2015