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Chattanooga Climate Normals and Records
(records began in 1879)

 

Note: The following monthly climatological data is not considered official.

For copies of official data, contact the National Climatic Data Center.

 

Daily and Monthly Climate Normals and Records
('Normals' are thirty year averages based on the period 1981-2010)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
Chattanooga Annual Averages

Average Rainfall..... 52.49"    

Avg number of days at or above 90 F..... 46 days

Average Snowfall..... 5.2"  

Avg number of days at or below 32 F..... 59 days

Average first frost..... October 26th

Average last frost..... April 10th

Average first freeze..... November 6th

Average last freeze..... March 27th

Thanksgiving avg temp..... 47.1 F

Thanksgiving avg rainfall..... 0.12"

Easter avg temp..... 58.1 F

Easter avg rainfall..... 0.13"

 

 
Chattanooga Records

Highest Temperature

      107 F                    July 1, 2012  &  June 30, 2012

Lowest Temperature

-10 F

January 21, 1985  &  January 31, 1966  &

February 13, 1899

Highest rainfall total in one day

9.49" September 5, 2011

Highest rainfall total in one month

16.32" March 31, 1980

Highest rainfall total in one year

73.70" 1994

Most snow in one day

18.5" March 13, 1993

Most snow in one month

20.0" March 31, 1993

Most Snow in one season (Dec - Feb)

22.2" 1917-1918

Most snow in one year

22.7" 1992 - 1993

Easter highest rainfall total

1.85" April 17, 1938

Easter highest snowfall total

1.6" March 24, 1940

Easter warmest temperature

86 F April 21, 1946  &  March 27, 1910

Easter coldest temperature 

26 F April 1, 1923

Thanksgiving highest rainfall total

1.56" November 28, 1963

Thanksgiving highest snowfall total

1.1" November 29, 1883

Thanksgiving warmest temperature

75 F November 24, 1921

Thanksgiving coldest temperature

20 F November 27, 1930

Measurable snowfall on Christmas Day

5.1" 1969

 

2.5" 1910

 

1.2" 1909

 

0.3" 1989

 

0.1" 1913

 

0.1" 1899

 

 
Records updated on 11/20/2017
 
 
 
For climate data queries, please visit NOWData at:   
http://w2.weather.gov/climate/xmacis.php?wfo=mrx
 
 
 
Helpful Information:
Frost data - search for temperatures at or below 36 degrees
Freeze data - search for temperatures at or below 32 degrees
 
 
Warmest/Coldest Monthly Average Temperatures
  JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Warmest 53.7 53.7 62.9 66.5 75.2 82.2 85.2 85.7 82.8 69.7 58.8 57.5
  1950 1890 2012 2017 1962 1952 1993 2007 1925 1919 1985 1889

Coldest 28.5 33.8 39.0 53.2 62.6 68.4 72.8 73.5 67.4 54.5 42.7 34.5
  1977 1958 1960 1907 1917 1974 1967 1992 1967 1917 1976 1917
Wettest/Driest Monthly Precipitation Totals
  JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Wettest 12.67 12.30 16.32 15.29 12.00 9.40 13.49 12.36 14.18 11.91 13.59 13.68
  1882 1939 1980 1911 1929 1949 1916 1920 1977 1925 1948 1961

Driest 0.90 0.62 0.93 0.44 0.54 0.29 0.20 0.01 0.04 0.08 0.16 0.44
  1986 1941 1910 1942 1941 1931 1957 2011 1919 2016 1890 1889

For additional information via a searchable database:

www.nws.noaa.gov/climate/xmacis.php