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, January 31, 1966, February  13, 1899
Most Rain in One Day 9.49" September 5, 2011
Most Rain in One Month 16.32" March 1980
Most Rain in One Year 73.70" 1994
Most Snow in One Day 18.5" March 13, 1993
Most Snow in One Season (Dec-Feb) 22.2" 1917-18
Most Snow in One Year 22.7" 1992-93
 Measurable Snowfall on Christmas 2.5" 2010
  0.3" 1989
  5.1" 1969
  0.1" 1913
  1.2" 1909
  0.1" 1899
 
Warmest/Coldest Monthly Average Temperatures
  JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Warmest 53.7 53.9 62.9 65.6 75.2 82.2 85.2 85.7 82.8 69.7 58.8 57.2
  1950 1890 2012 1954 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 1895 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 1938 1890 1889
 
 

For additional information via a searchable database:

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


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