Weather Averages Chattanooga, TN

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Weather Averages for
Chattanooga, TN



Latitude: 35°2'N, Longitude: 85°12'W, Elevation: 210.9 m, Distance: 3.89 km

  Unit Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average temperature
over 48 years
°C 15 4 6 10 15 20 24 26 25 22 16 10 5
Average high temperature
over 48 years
°C 21 9 12 16 22 26 30 32 31 28 22 16 11
Average low temperature
over 48 years
°C 9 -1 0 3 8 13 17 20 20 16 8 3 0
Highest recorded temperature
over 48 years
°C 41 25 26 30 33 36 40 41 40 38 34 28 25
Lowest recorded temperature
over 48 years
°C -23 -23 -17 -13 -3 1 5 10 11 2 -5 -15 -18
Average number of rainy days
over 63 years
days 120 12 10 12 10 10 10 12 10 8 7 9 11
Average number of days above 27°C
over 48 years
days 48 - - - - 2 10 16 14 5 - - -
Average precipitation
over 48 years
cm 136.1 13.2 13.0 15.2 10.9 10.2 9.4 12.2 8.9 10.4 8.1 11.4 13.0
Average dew point
over 48 years
°C 9 -1 0 3 7 13 18 20 20 16 10 3 0
Average number of days above 17°C
over 48 years
days 206 1 2 8 19 28 30 31 31 29 20 6 1
Most recorded rainfall
over 48 years
cm 187.2 27.9 24.6 41.4 30.2 23.4 23.9 30.2 19.1 36.1 25.1 34.5 34.8
Least recorded rainfall
over 48 years
cm 88.6 2.3 1.8 3.0 2.5 2.8 1.5 0.5 1.5 1.3 0.5 2.3 2.3
Average number of days with thunderstorms
over 48 years
days 55 1 2 4 5 7 9 11 9 4 1 1 1
Average number of days with fog
over 48 years
days 165 13 11 11 8 13 14 16 19 17 16 14 13
Average morning relative humidity
over 48 years
% 87 82 82 82 83 89 89 90 92 92 91 86 83
Average evening relative humidity
over 48 years
% 53 58 52 48 44 51 53 55 55 55 50 52 57
Average wind speed
over 48 years
km/h 12.9 12.9 14.5 14.5 14.5 12.9 9.7 8.0 8.0 9.7 9.7 12.9 12.9
Average number of days below -1.5°C
over 48 years
days 72 19 15 8 1 - - - - - 1 10 17
Average snowfall
over 63 years
cm 11.2 4.6 3.0 1.8 0.3 - - - - - - - 1.5
Average number of clear days
over 63 years
days 105 7 7 8 9 9 8 7 8 10 13 10 8
Heating degree days
over 30 years
days 3587 856 650 453 196 57 - - - 9 190 435 741
Cooling degree days
over 30 years
days 1544 - - - 19 116 306 425 400 231 47 - -
Average possibility of sunshine
over 63 years
% 57 43 49 52 61 65 65 62 63 64 63 53 44
Average number of cloudy days
over 63 years
days 155 17 15 16 13 12 10 11 10 10 10 13 17
Average number of partly cloudy days
over 63 years
days 106 7 6 7 8 10 12 13 13 10 8 7 6
Average number of days below -12.5°C
over 48 years
days 2 1 - - - - - - - - - - -