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Chattanooga weather in September 2026
Expect daytime maximum temperatures of 28°C in Chattanooga, Tennessee in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 105 mm of rainfall in the month.
- 28°C max day temperature
28 - 8 hours of sunshine per day
- 8 days with some rainfall
8 - 16°C min night temperature
16 - 12 hours of daylight per day
12 - Moderate heat & humidity
M - 105 mm of monthly rainfall
105 - 8 (Very High) UV index
8
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Recommended for Tennessee
The September weather guide for Tennessee (Chattanooga) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Chattanooga in September?
Daytime temperatures usually reach 28°C in Chattanooga in September with moderate heat and humidity, falling to 16°C at night.
How sunny is it in Chattanooga in September?
There are normally 8 hours of bright sunshine each day in Chattanooga in September - that's 61% of daylight hours.
Does it rain in Chattanooga in September?
There are usually 8 days with some rain in Chattanooga in September and the average monthly rainfall is 90mm.
Chattanooga September sunrise & sunset times
Browse the sunrise and sunset times for Chattanooga in September 2026. Select a month to view Chattanooga sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Tuesday, 1st September 2026 | 06:14 | 19:08 |
| Tuesday, 15th September 2026 | 06:24 | 18:48 |
| Wednesday, 30th September 2026 | 06:35 | 18:26 |
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