Chattanooga Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Chattanooga, Tennessee during each month of the year.

The average high and low temperatures are listed below monthly and annually for the city, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in Chattanooga, scroll down farther. There are also monthly and yearly counts of days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1981 to 2010 weather.

10-year temperature averages for Chattanooga, 2010 to 2019
High °F Low °F   High °C Low °C
50 31 January 10 0
56 36 February 13 2
64 43 March 18 6
75 51 April 24 11
83 60 May 28 16
89 68 June 32 20
91 72 July 33 22
90 70 August 32 21
86 65 September 30 18
75 52 October 24 11
62 40 November 17 4
55 37 December 13 3
73 52 Year 23 11
30-year temperature averages for Chattanooga, 1981 to 2010
High °F Low °F   High °C Low °C
50 31 January 10 -1
55 34 February 13 1
64 41 March 18 5
73 48 April 23 9
80 57 May 27 14
87 66 June 31 19
90 70 July 32 21
90 69 August 32 21
83 62 September 28 17
73 50 October 23 10
62 40 November 17 5
52 33 December 11 1
72 50 Year 22 10

Days of Hot Weather in Chattanooga

About half of summer days at Chattanooga have highs in the 90s Fahrenheit. Just once a year on average the thermometer makes it to 100 °F (38 °C).

Days per month in Chattanooga of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 0 0 0
February 2 0 0
March 2 2 0
April 19 8 0
May 28 17 1
June 30 27 10
July 31 30 17
August 31 30 15
September 29 21 5
October 20 6 0
November 7 1 0
December 1 0 0
Year 208 140 48

How Often Chattanooga Has Cold Temperatures

A cold night at Chattanooga usually means lows below 20 °F. Typically nine nights a winter get that cold, with one night dropping as low as 10 °F (-12 °C) or below.

No matter how cold the night, afternoon temperatures here usually warm up to above freezing. The city averages just three frosty days a year.

Days per month on average in Chattanooga when the minimum temperature drops to 20, 32, or 40 °F or below
  20 °F
-8 °C
32 °F
0 °C
40 °F
4 °C
January 5 17 25
February 2 12 21
March 0 6 15
April 0 1 5
May 0 0 0
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 0 5
November 0 7 15
December 2 16 24
Year 9 58 111
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information. 1981-2010 U.S. Climate Normals. (Data Access. FTP.)

Tennessee Temperatures
Back to Top