Atlanta weather in September
September in Atlanta averages 84°F by day and 66°F at night, with 3.8 inches of precipitation. It is the 4th-warmest and 9th-wettest month of the year here.
- Average high
- 84°F-5° vs August
- Average low
- 66°F0 nights below freezing
- Precipitation
- 3.8 in5 days with 0.1 in. or more
- Snow
- 0.0 in5 days at 90°F+
Is September a good time to visit Atlanta?
Yes. September is one of the most comfortable months in Atlanta by our rule (highs of 62 to 86°F, lows of 42°F or more and under 4.5 inches of precipitation). The most comfortable months overall are April to May and September to November.
Get outside in Atlanta in September
September is made for being outside. Try Zoo Atlanta, Centennial Olympic Park, Martin Luther King Jr. National Historical Park, Atlanta Botanical Garden. All things to do in Atlanta.
On September 15 the sun rises at 7:21 am and sets at 7:43 pm, giving 12h 23m of daylight. Daylight all year.
What to pack for Atlanta in September
- Summer clothes, with a light layer for air conditioning
- An umbrella or rain jacket
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
September nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Atlanta | 84°F | 66°F | 3.8 in | |
| Sandy Springs, GA | 6 mi | 83°F | 63°F | 4.1 in |
| Mableton, GA | 12 mi | 80°F | 62°F | 3.7 in |
| Roswell, GA | 12 mi | 83°F | 63°F | 4.1 in |
| Johns Creek, GA | 17 mi | 83°F | 63°F | 4.1 in |
| South Fulton, GA | 18 mi | 84°F | 66°F | 3.8 in |
| Athens, GA | 59 mi | 85°F | 63°F | 3.9 in |
Frequently asked questions
What is the weather like in Atlanta in September?
In September, Atlanta averages a high of 84°F and a low of 66°F, with 3.8 inches of precipitation (NOAA 1991-2020 normals).
Is September a good time to visit Atlanta?
Yes. September is one of Atlanta's most comfortable months by our rule: highs between 62°F and 86°F, lows of 42°F or more and modest rain.
Does it snow in Atlanta in September?
Rarely. The September snowfall normal is under half an inch.
Before and after: Atlanta in August and Atlanta in October. All twelve months: Atlanta weather by month.
NOAA NCEI 1991-2020 climate normals, station Atlanta Hartsfield Intl. Airport, GA, 15.1 miles from the city center.