Chattanooga Average Temperature by Month

This page shows the average temperature in each month of the year in Chattanooga, Tennessee. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Chattanooga?
In Chattanooga, Tennessee, the warmest month is July, with an average daily high temperature of 90.4 °F and an average low of 70.6 °F.
What's the Coldest Month in Chattanooga?
In Chattanooga, Tennessee, the coolest month is January, with an average daily high temperature of 51.0 °F and an average low of 32.1 °F.
Month Avg. High Avg. Low
January 51.0 °F 32.1 °F
February 55.5 °F 35.2 °F
March 64.0 °F 41.9 °F
April 73.5 °F 49.6 °F
May 80.8 °F 58.6 °F
June 87.5 °F 66.9 °F
July 90.4 °F 70.6 °F
August 89.9 °F 69.8 °F
September 84.3 °F 63.2 °F
October 73.9 °F 51.1 °F
November 62.1 °F 40.0 °F
December 53.5 °F 34.9 °F
Year 72.3 °F 51.2 °F
Weather Station Details
Years Station Coordinates
1940–2024 Chattanooga Lovell Airport location
1879–1939 Chattanooga location