Chattanooga
September
Weather in Chattanooga for September 2025
Your guide to Chattanooga weather in September - trends and predictions
In general, the average temperature in Chattanooga at the beginning of September is 28.3 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 25.7 °F by the end of September.
Chattanooga sees moderate rainfall in September, averaging 8 rainy days.
- New! Chat with our AI weatherman - it’s amazing and free.
22
Dry days
8
Rainy days
0
Snow days
28°/17°
Temperatures
10 km/h
Avg max wind
66 %
Avg humidity
Chattanooga in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2 30° | 3  30° | 4  30° | 5 27° | 6  27° | 7  27° |
| 8 26° | 9 29° | 10 29° | 11 29° | 12  25° | 13 26° | 14 23° |
| 15 27° | 16 26° | 17  28° | 18 25° | 19 27° | 20 29° | 21 30° |
| 22 30° | 23 29° | 24 28° | 25 27° | 26  26° | 27 23° | 28 24° |
| 29 25° | 30 27° |
You can click on date
Access Chattanooga weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Chattanooga
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Overcast | 27° /20° | 0.9 mm | 6 | |
| Sept. 2 | Overcast | 30° /20° | 0 mm | 7 | |
| Sept. 3 | Sunny | 30° /19° | 0 mm | 8 | |
| Sept. 4 | Partly cloudy | 30° /18° | 0 mm | 7 | |
| Sept. 5 | Overcast | 27° /20° | 0 mm | 7 | |
| Sept. 6 | Mist | 27° /17° | 1.6 mm | 6 | |
| Sept. 7 | Thundery outbreaks possible | 27° /17° | 0.1 mm | 6 | |
| Sept. 8 | Overcast | 26° /15° | 0 mm | 6 | |
| Sept. 9 | Thundery outbreaks possible | 29° /16° | 0.2 mm | 7 | |
| Sept. 10 | Mist | 29° /17° | 1 mm | 7 | |
| Sept. 11 | Fog | 29° /17° | 0 mm | 7 | |
| Sept. 12 | Moderate rain at times | 25° /18° | 10.3 mm | 6 | |
| Sept. 13 | Overcast | 26° /19° | 8.4 mm | 6 | |
| Sept. 14 | Partly cloudy | 23° /17° | 12.4 mm | 6 | |
| Sept. 15 | Overcast | 27° /17° | 0 mm | 6 | |
| Sept. 16 | Overcast | 26° /16° | 0.4 mm | 7 | |
| Sept. 17 | Patchy light drizzle | 28° /16° | 0.8 mm | 7 | |
| Sept. 18 | Partly cloudy | 25° /16° | 6.1 mm | 6 | |
| Sept. 19 | Overcast | 27° /19° | 0 mm | 6 | |
| Sept. 20 | Overcast | 29° /17° | 0 mm | 7 | |
| Sept. 21 | Overcast | 30° /19° | 0 mm | 7 | |
| Sept. 22 | Partly cloudy | 30° /18° | 0 mm | 8 | |
| Sept. 23 | Partly cloudy | 29° /18° | 0 mm | 7 | |
| Sept. 24 | Mist | 28° /19° | 0 mm | 6 | |
| Sept. 25 | Partly cloudy | 27° /18° | 71.7 mm | 6 | |
| Sept. 26 | Patchy rain possible | 26° /18° | 37.8 mm | 6 | |
| Sept. 27 | Light rain shower | 23° /18° | 90.2 mm | 6 | |
| Sept. 28 | Sunny | 24° /17° | 9.2 mm | 6 | |
| Sept. 29 | Mist | 25° /17° | 0 mm | 6 | |
| Sept. 30 | Mist | 27° /17° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Chattanooga in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Chattanooga forecast closer to your planned date for the most up-to-date weather information.
Chattanooga in September - FAQ
What are the expected maximum and minimum temperatures in Chattanooga during September?
During September, expect a variety of temperatures with highs around 28° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Chattanooga during September?
In September, Chattanooga can expect light to moderate rainfall, totaling 23.8 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Chattanooga during September?
The average wind speed in Chattanooga during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Chattanooga
Explore the daily rainfall trends and prepare for Chattanoogas September weather 💧
UV exposure in Chattanooga during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
You are here
Where is Chattanooga?Get accurate weather forecasts for Chattanooga, located at latitude 35.046 and longitude -85.31. Stay updated with localized weather information tailored for Chattanooga.
Found a mistake?
We appreciate your attention to details. Tell us here.