Weatheo

Chattanooga Weather by Month

Average temperatures, rainfall and humidity for Chattanooga, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Chattanooga month looks like before you travel — then check the live Chattanooga forecast for the days ahead.

Warmest month

July

32°C average high

Coolest month

January

1°C average low

Wettest month

August

90 mm of rain

Driest month

November

47 mm of rain

Average temperature and rainfall in Chattanooga by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January10°C1°C-14°C / 24°C
66 mm
72%9 km/h
February14°C3°C-14°C / 27°C
79 mm
71%10 km/h
March18°C7°C-7°C / 30°C
79 mm
66%10 km/h
April23°C11°C-1°C / 31°C
85 mm
66%10 km/h
May26°C15°C4°C / 34°C
57 mm
73%8 km/h
June30°C19°C11°C / 36°C
74 mm
76%7 km/h
July32°C21°C14°C / 37°C
60 mm
76%7 km/h
August31°C21°C13°C / 37°C
90 mm
77%6 km/h
September28°C18°C7°C / 37°C
54 mm
76%7 km/h
October23°C12°C-4°C / 35°C
70 mm
74%8 km/h
November17°C6°C-11°C / 29°C
47 mm
72%8 km/h
December13°C4°C-14°C / 24°C
87 mm
76%8 km/h

Best time to visit Chattanooga

The most comfortable time to visit Chattanooga is generally April to May and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around August, totalling about 849 mm a year.

Travellers who prefer heat should aim for July, when highs average 32°C. August is the month to avoid if rain would spoil your plans — it averages 90 mm, roughly 2× the rainfall of the driest month (November).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Chattanooga forecast for what is happening now.

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