Chattanooga (TN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Chattanooga.
Climate overview of Chattanooga
Chattanooga, Tennessee, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 32°C (90°F) in August, while winters cool to 10°C (50°F) in January.
With around 1365 mm (54 in) of annual rain/snowfall, Chattanooga has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has very warm summers and cold winters. The wettest month is December. The sunniest month is May, with 9.2 hours of sunshine per day on average.
Chattanooga Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Chattanooga - and find the best time to visit.
Monthly Temperature in Chattanooga
Depending on the time of the year, temperatures range from very warm to chilly in Chattanooga. Average daytime temperatures reach a very warm 32°C (90°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 10°C (50°F).
At night, temperatures range from around 21°C (70°F) in August to -1°C (30°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Chattanooga
Chattanooga has a relatively rain/snowy climate with high precipitation levels, averaging 1365 mm (54 in) of rain/snowfall annually. Chattanooga experiences moderate seasonal variation in rainfall, with monthly averages ranging from 155 mm (6.1 in) in December, the wettest month, and 84 mm (3.3 in) in June, the driest month. For more details, please visit our Chattanooga Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Chattanooga
Chattanooga can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 9.2 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Chattanooga by Month
The relative humidity is high throughout the year in Chattanooga.
The city experiences its highest humidity in September, reaching 77%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Chattanooga
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May
- Warmest weather: June, July and August
- Most sunshine: May, June and July
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -1°C (30°F).
Frequently asked questions about the climate in Chattanooga
What is the best time to visit Chattanooga?
May typically offers the most optimal weather in Chattanooga. In contrast, January and December tend to have less optimal conditions. Chattanooga has very warm summers and cold winters.
What temperatures can I expect in Chattanooga?
Daytime highs range from 10°C (50°F) in January to 32°C (90°F) in August. Nighttime lows range from -1°C (30°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Chattanooga get?
Annual rainfall is around 1365 mm (54 in). December is the wettest month with 155 mm (6.1 in), while June is the driest with 84 mm (3.3 in).
How sunny is Chattanooga?
Chattanooga receives around 2,580 hours of sunshine per year. May is the sunniest month with 277 hours, while December is the cloudiest with just 142 hours. Overall, Chattanooga enjoys abundant sunshine.
Chattanooga 3-Day Forecast
Chattanooga (TN) 3-Day Forecast
Chattanooga on the map
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