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.

All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.

Average Chattanooga temperatures
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
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Tennessee Temperatures
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