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
Precipitation.....52.48 inches Days with 0.01" or more of precipitation.....119.6
Snowfall.....3.9 inches Days with 1.0" or more of snowfall.....1
Days with thunderstorms.....54.8 Days at or above 90 F.....47.7
Days with dense fog.....27.3 Days at or below 32 F.....58.3
Average first freeze.....November 4 Average last freeze.....April 1
Average first frost.....October 20 Average last frost.....April 14


Chattanooga All-Time Records
All Time Highest Temperature 107 F June 30 and July 1, 2012
All Time Lowest Temperature -10 F January 21, 1985
Most Rain in One Hour 2.70" July 27, 1976
Most Rain in 24 Hours 9.50" September 5-6, 2011
Most Rain in One Month 16.32" March 1980
Most Rain in One Year 73.70" 1994
Most Snow in 24 Hours 20" March 12-13, 1993
Most Snow in One Season 23.9" 1894-95
Snowfall on Christmas 2.5" 2010
  Trace 2002
  Trace 1993
  0.2" 1989
  Trace 1976
  Trace 1970
  5.1" 1969
  Trace 1962
  Trace 1961
  Trace 1956
  Trace 1953
  Trace 1935
  Trace 1915
  0.1" 1913
  1.2" 1902
  0.1" 1899
  Trace 1879
Strongest Wind Gust 56 MPH June 1987


Warmest/Coldest Monthly Average Temperatures
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Warmest 53.7 54.0 62.9 65.6 75.2 82.2 85.2 85.7 82.8 69.6 58.8 57.2
  1950 1890 2012 1954 1962 1952 1993 2007 1925 1919 1985 1889
Coldest 28.5 33.8 39.0 53.3 62.6 68.4 72.8 73.5 67.4 54.6 42.7 34.3
  1977 1895 1960 1907 1917 1974 1967 1992 1918 1917 1976 1917


Wettest/Driest Monthly Precipitation Totals
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wettest 14.74 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 0.42 0.44 0.54 0.29 0.20 0.01 0.04 0.08 0.16 0.44
  1986 1941 2012 1942 1941 1931 1957 2011 1919 1938 1890 1889

 


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