Atlanta Weather in September
Typical September in Atlanta: days around 84°F, nights around 66°F — based on 30-year climate normals (NOAA, 1991–2020), day by day below.
84°Faverage high
66°Faverage low
87°Fwarmest normal day
80°Fcoolest normal day
Day-by-day September normals for Atlanta
Long-term daily averages (NOAA 1991–2020) — climate, not a live forecast. For the next 16 days, use the live forecast.
| Day | Avg high | Avg low |
|---|---|---|
| Sep 1 | 87°F | 70°F |
| Sep 2 | 87°F | 69°F |
| Sep 3 | 87°F | 69°F |
| Sep 4 | 87°F | 69°F |
| Sep 5 | 86°F | 69°F |
| Sep 6 | 86°F | 69°F |
| Sep 7 | 86°F | 68°F |
| Sep 8 | 86°F | 68°F |
| Sep 9 | 86°F | 68°F |
| Sep 10 | 85°F | 68°F |
| Sep 11 | 85°F | 67°F |
| Sep 12 | 85°F | 67°F |
| Sep 13 | 85°F | 67°F |
| Sep 14 | 84°F | 67°F |
| Sep 15 | 84°F | 66°F |
| Sep 16 | 84°F | 66°F |
| Sep 17 | 84°F | 66°F |
| Sep 18 | 84°F | 65°F |
| Sep 19 | 83°F | 65°F |
| Sep 20 | 83°F | 65°F |
| Sep 21 | 83°F | 64°F |
| Sep 22 | 82°F | 64°F |
| Sep 23 | 82°F | 64°F |
| Sep 24 | 82°F | 64°F |
| Sep 25 | 82°F | 63°F |
| Sep 26 | 81°F | 63°F |
| Sep 27 | 81°F | 62°F |
| Sep 28 | 81°F | 62°F |
| Sep 29 | 80°F | 62°F |
| Sep 30 | 80°F | 61°F |
September in Atlanta through the years
Real photos taken in Atlanta in September by Weathershot app users — different years, same month.
More months: October · Live Atlanta forecast
Climate normals: NOAA 1991–2020 (GHCND). Photos: Weathershot community, taken on location. © Weathershot · Byss Mobile