Most Monthly Precipitation in Chattanooga History

This is a list of the largest monthly precipitation totals ever recorded in Chattanooga, Tennessee history from 1879–2024.

What Was the Wettest Month in Chattanooga History?

According to NOAA records, the most precipitation that Chattanooga, Tennessee has ever received in a single month is 16.3 inches which occurred in March 1980.

Chattanooga Most Rain in One Month

Rank	Precipitation	Month
1	16.3 inches	March 1980
2	15.3 inches	April 1911
3	14.2 inches	September 1977
4	14.1 inches	March 1899
5	13.9 inches	March 1917
6	13.8 inches	March 1973
7	13.7 inches	December 1961
8	13.6 inches	November 1948
9	13.5 inches	July 1916
10	12.8 inches	March 1963
11	12.7 inches	January 1882
12	12.4 inches	September 2009
13	12.4 inches	August 1920
14	12.3 inches	February 1939
15	12.3 inches	January 1947
16	12.2 inches	September 1957
17	12.2 inches	March 1880
18	12.1 inches	March 2021
19	12.0 inches	May 1929
20	12.0 inches	March 1886