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 22.7" 1992-1993
 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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