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.