Knoxville Climate Normals and Records
(records began in 1871)

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


Knoxville Annual Averages
Precipitation.....47.86 inches Days with 0.01" or more of precipitation.....125.2
Snowfall.....6.5 inches Days with 1.0" or more of snowfall.....2.2
Days with thunderstorms.....48.4 Days at or above 90 F.....31.4
Days with dense fog.....30 Days at or below 32 F.....67
Average first freeze.....November 3 Average last freeze.....April 6
Average first frost.....October 17 Average last frost.....April 19


Knoxville All-Time Records
All Time Highest Temperature 105 F June 30 and July 1, 2012
All Time Lowest Temperature -24 F January 21, 1985
Most Rain in One Hour 2.78" August 11, 1983
Most Rain in 24 Hours 6.14" July 16, 1917
Most Rain in One Month 17.62" April 1874
Most Rain in One Year 73.87" 1875
Most Snow in 24 Hours 18.2" November 21-22, 1952
Most Snow in One Season 56.7" 1959-60
Snowfall on Christmas 2.5" 2010
  Trace 2002
  Trace 1993
  0.3" 1992
  Trace 1985
  1.2" 1976
  7.0" 1969
  2.0" 1962
 

1.0"

1935
  6.0" 1929
  2.0" 1915
Strongest Wind Gust 86 MPH August 1, 1995


Warmest/Coldest Monthly Average Temperatures
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Warmest 52.0 51.8 60.4 64.6 74.0 81.4 83.0 83.2 79.7 68.9 56.8 54.1
  1950 1890 2012 1954 1962 1952 1993 2007 1925 1919 1985 1889
Coldest 26.7 30.5 36.8 51.2 60.9 69.1 71.8 70.4 65.2 51.9 40.0 29.2
  1940 1895 1960 1907 1917 1903 1967 1875 1918 1875 1872 1876


Wettest/Driest Monthly Precipitation Totals
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wettest 16.98 12.52 13.35 17.32 10.98 11.83 13.16 11.33 9.19 9.51 10.36 12.34
  1882 1873 1917 1874 1974 1928 1917 1920 1989 1925 1948 1901
Driest 0.95 0.56 0.72 0.39 0.71 0.20 0.33 0.77 0.22 Trace 0.17 0.45
  1986 1898 1910 1976 1941 1944 1995 1954 1879 2000 1890 1965

 


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