Weather in Chattanooga in August 2025
- August is usually the hottest month of the year in Chattanooga;
Average weather
Average temperature in Chattanooga in August
The expected average maximum temperature in August is +31°C with a maximum of +36°C and a minimum of +17°C.
The average maximum temperature goes down 11% by the end of the month, compared with the beginning of the month, from +31°C to +29°C.
Is Chattanooga warm or cold in August?
Chattanooga is typically hot in August.
Maximum temperatures go up compared to the previous month from +31°C to +31°C. The minimum temperature also goes down from +22°C to +21°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
August is the hottest month in Chattanooga, here is the comparison with other months:
Climate in Chattanooga in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +31°C | +31°C | +28°C | ||||
| Min. temperature | ||||||
| +14°C | +13°C | +5°C | ||||
| Max. temperature | ||||||
| +41°C | +39°C | +36°C | ||||
| Rainfall | ||||||
| 117 mm | 98 mm | 95 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 73% | 73% | 73% | ||||
| Air pressure | ||||||
| 1016 HPa | 1016 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 4 | 6 | 8 | ||||
| Cloudy days | ||||||
| 5 | 6 | 7 | ||||
| Rainy days | ||||||
| 13 | 12 | 10 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as good as in July. The temperature levels stay the same in the area of +31°C for average maximum temperature during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 117 mm to 98 mm. Humidity levels don’t change as the month goes on, averaging around 73%. The average wind speed doesn’t change much during August, staying around 1 m/s. The good news is there are likely to be more sunny days in August, from 4 to 6.
September brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Chattanooga is gradually increasing during August, going from 2 m/s to 3 m/s over the course of the month.
Rain
How was the weather last August in Chattanooga?
Climate Change over Years
The climate in Chattanooga in August has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+20°C) and the highest in 2016 (+24°C). The driest year was 2007 with only 654 mm of rainfall, and the wettest year was 2019 with 2402 mm.
FAQ
Is August a good time to visit Chattanooga?
Can you sunbathe in Chattanooga in August?
Is Chattanooga rainy in August?
Is it sunny in Chattanooga in August?
Other cities in USA
Monthly weather in Chattanooga
Source of the data
For this page, we’ve looked at the typical weather in Chattanooga, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.