Chattanooga, TN Climate

Summary Graph

The summary climate graph for Chattanooga, TN shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.

Graph of average and extreme temperature ranges by day for Chattanooga, TN.


The warmest month in Lovell Field, Chattanooga, Tennessee is July with an average high temperature of 91.0°F. The hottest day on record was June 30 2012 when the temperature hit 107.1°F. During January the overnight temperature drops to an average of 29.9°F with the lowest temperature of -9.9°F being recorded on January 21 1985.

Warmest Days

Warmest Months

Coldest Days

Coldest Months

The warmest days on record are:

30 Jun 2012107.1°F
2 Jul 2012107.1°F
13 Jul 1980105.1°F
24 Aug 2007105.1°F
9 Jul 1977104°F

The warmest months on average were:

August 200798.4°F
August 201197.3°F
July 199396.8°F
July 197795.9°F
August 201095.8°F

The coldest days on record are:

21 Jan 1985-9.9°F
17 Jan 1982-2.2°F
17 Jan 1977-2°F
25 Dec 1983-2°F
20 Jan 19941.9°F

The coldest months on average were:

January 197718.4°F
January 198521.8°F
January 197822°F
January 198122.5°F
January 198423.2°F


The wettest month by average rainfall in Chattanooga, TN is March with an average of 6.2 inches of rain falling on 11 to 12 days.Although in July it typically rains on more days with 5.0 inches falling in 12 to 13 days. The driest month in Chattanooga, TN is October with an average of 3.5 inches of rain falling on 7 to 8 days.

Wettest Days

The wettest days on record are:

26 August 20082.5 inches
21 August 19942.3 inches
5 August 19842 inches
12 August 19741.9 inches
17 August 19821.8 inches

Wettest Months

The wettest months on record are:

March 197321.3 inches
May 197316 inches
April 197315.7 inches
March 198013.7 inches
March 201113 inches

Driest Months

The driest months on record are:

August 20110 inches
September 19840.2 inches
October 19910.3 inches
August 19990.5 inches
October 20000.5 inches