Chattanooga Weather in September

September in Chattanooga brings high temperatures, with daytime highs of 29°C (84°F) and nights around 17°C (63°F). Quite a bit of rainfall is expected, around 114 mm (4.5 in), so pack an umbrella.

Rainfall in Chattanooga in September

Typically, you can expect about 9 days of rain this month, with 114 mm (4.5 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Chattanooga in September

Chattanooga in September gets highs of 29°C (84°F) during the day and drops to 17°C (63°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 17°C (63°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Chattanooga in September

The month enjoys around 229 hours of sunshine, creating mostly sunny days with good weather conditions.

If you prefer dry days with pleasant temperatures, May typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Chattanooga's climate page.

Chattanooga Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 30%  

Precipitation 114 mm (4.5 in)  

Rainy days 9 days  

Humidity 77%  

Sunshine 229 hours  

Percentage Sunshine 61%  

What to Wear in Chattanooga in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Chattanooga in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Chattanooga's climate page.

More climate data for Chattanooga

Temperature Rainfall Sunshine Humidity

See the full Chattanooga climate overview or explore weather in the United States of America.