Atlanta, Georgia weather in September

Averages from 2021–2025 (150 days of record).

Average high: 82°F
Average low: 64°F
Rainy days: ~10 per month
Total precipitation: 5.7 in
Warmest recorded: 93°F
Coldest recorded: 51°F

Expect September days in Atlanta, Georgia to top out around 82°F and cool to about 64°F overnight, with roughly 10 days of measurable rain across the month. In recent years September has ranged from 51°F to 93°F.

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Current Atlanta, Georgia forecast → · Historical data by Open-Meteo (ERA5).