Chattanooga in September
8.0out of 10
Yes, a good time to go
Warm and comfortable: highs around 28°C. Some rain: about 8 rainy days.
28°CAvg high
17°CAvg low
8Rainy days (99 mm)
12:12 hDaylight
07:29Sunrise · 19:42 Sunset
Why this score
- Warm and comfortable: highs around 28°C
- Some rain: about 8 rainy days
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
How reliable is the forecast?
Rain in September varies a lot between years (±3.7 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 10°C | 1°C | 119 mm | 11 | – | – | 5.5 |
| February | 13°C | 2°C | 113 mm | 10 | – | – | 6.0 |
| March | 17°C | 6°C | 133 mm | 12 | – | – | 6.5 |
| April | 22°C | 10°C | 120 mm | 10 | – | – | 7.5 |
| May | 26°C | 15°C | 100 mm | 11 | – | – | 7.5 |
| June | 29°C | 19°C | 96 mm | 13 | – | – | 7.2 |
| July | 31°C | 21°C | 104 mm | 13 | – | – | 6.7 |
| August | 31°C | 21°C | 85 mm | 11 | – | – | 7.1 |
| September | 28°C | 17°C | 99 mm | 8 | – | – | 8.0 |
| October | 22°C | 11°C | 84 mm | 7 | – | – | 8.1 |
| November | 16°C | 5°C | 105 mm | 9 | – | – | 6.8 |
| December | 11°C | 2°C | 128 mm | 10 | – | – | 5.8 |
Frequently asked questions
How hot is Chattanooga in September?
Daytime highs average 28°C and nights about 17°C.
When is the best time to visit Chattanooga?
The best months are October, September, April, May.