Most Monthly Precipitation in Dayton History

This is a list of the largest monthly precipitation totals ever recorded in Dayton, Tennessee history from 1956–2024.

What Was the Wettest Month in Dayton History?

According to NOAA records, the most precipitation that Dayton, Tennessee has ever received in a single month is 16.8 inches which occurred in May 2003.

Dayton Most Rain in One Month

Rank	Precipitation	Month
1	16.8 inches	May 2003
2	14.0 inches	December 1990
3	13.7 inches	December 2015
4	13.6 inches	March 1973
5	13.5 inches	March 1975
6	13.4 inches	September 1977
7	13.3 inches	March 1963
8	13.0 inches	July 2013
9	12.9 inches	February 2003
10	12.9 inches	May 2009
11	12.8 inches	September 1957
12	12.7 inches	December 1991
13	12.5 inches	September 2018
14	11.9 inches	November 1957
15	11.7 inches	July 2005
16	11.7 inches	March 1980
17	11.6 inches	February 2020
18	11.2 inches	June 1989
19	11.2 inches	March 1965
20	11.2 inches	February 2019