Chattanooga Average Rainfall by Month

This page shows the average precipitation (including snowfall) in each month of the year in Chattanooga, Tennessee. It is based on NOAA data for the years 1991–2020.

Average temperature by month

What's the Rainiest Month in Chattanooga?

In Chattanooga, March has the greatest precipitation of any month. On average, Chattanooga gets 5.3 inches of precipitation in March.

However, February is the month with the greatest chance of precipitation. 39.0% of days in February will have at least some rain or snow.

What's the Driest Month in Chattanooga?

In Chattanooga, October has the least precipitation of any month. On average, Chattanooga gets 3.59 inches of precipitation in October.

October is also the month where rain is least common. 25.6% of days in October will have measurable rain.

Month	Precipitation	% Chance
January	5.02 in	34.1
February	5.02 in	39.0
March	5.34 in	36.8
April	4.87 in	33.7
May	3.94 in	34.1
June	4.18 in	37.9
July	5.08 in	38.3
August	3.67 in	30.4
September	4.23 in	26.2
October	3.59 in	25.6
November	4.80 in	30.4
December	5.25 in	36.5
Year	54.98 in	33.5

Weather Station Details

Years	Station	Coordinates
1940–2024	Chattanooga Lovell Airport	location
1879–1939	Chattanooga	location