Atlanta (GA)
September
Weather in Atlanta, Georgia for September 2026
Your guide to Atlanta weather in September - trends and predictions
So far, September 2026 in Atlanta shows a warmer trend than usual by 4.3 °F.
Expect cooler weather in the next days in Atlanta with the forecast suggesting a temperature of 28.2 °F, lower than the historical average.
In general, the average temperature in Atlanta at the beginning of September is 31 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.3 °F by the end of September.
Atlanta experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 207.9 mm.
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Temperatures
Rain 🌧️
More
6
Dry days
24
Rainy days
0
Snow days
28°/19°
Temperatures
14 km/h
Avg max wind
61 %
Avg humidity
Atlanta Weather September
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Temperatures trend during September in Atlanta
See the weather trend as well as the moving average line
September weather in Atlanta day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 31° /21° | 2.5 mm | 7 | |
| Sept. 2 |  Sunny | 31° /20° | 0.6 mm | 7 | |
| Sept. 3 |  Partly cloudy | 30° /20° | 1.5 mm | 8 | |
| Sept. 4 | Sunny | 32° /20° | 4.6 mm | 8 | |
| Sept. 5 | Sunny | 32° /21° | 2 mm | 7 | |
| Sept. 6 |  Moderate or heavy rain shower | 31° /21° | 3.9 mm | 7 | |
| Sept. 7 | Patchy rain possible | 30° /20° | 2.9 mm | 6 | |
| Sept. 8 | Partly cloudy | 29° /20° | 1.7 mm | 7 | |
| Sept. 9 | Partly cloudy | 29° /19° | 2.7 mm | 7 | |
| Sept. 10 | Sunny | 29° /18° | 1 mm | 7 | |
| Sept. 11 | Sunny | 33° /22° | 29.3 mm | 8 | |
| Sept. 12 | Patchy rain possible | 32° /21° | 5.3 mm | 7.3 | |
| Sept. 13 | Sunny | 32° /22° | 0.1 mm | 8.5 | |
| Sept. 14 | Sunny | 34° /25° | 0.1 mm | 8.4 | |
| Sept. 15 | Sunny | 34° /25° | 0 mm | 8 | |
| Sept. 16 | Sunny | 34° /23° | 0 mm | 8 | |
| Sept. 17 | Partly cloudy | 33° /25° | 0.2 mm | 8 | |
| Sept. 18 |  Overcast | 27° /20° | 2.9 mm | 6 | |
| Sept. 19 | Light rain shower | 21° /18° | 4.2 mm | 5 | |
| Sept. 20 | Light rain shower | 20° /17° | 123.3 mm | 4 | |
| Sept. 21 | Light rain shower | 17° /15° | 42.5 mm | 4 | |
| Sept. 22 |  Mist | 22° /16° | 0.1 mm | 5 | |
| Sept. 23 | Overcast | 28° /19° | 0.1 mm | 6 | |
| Sept. 24 | Overcast | 28° /17° | 0.4 mm | 7 | |
| Sept. 25 | Overcast | 28° /19° | 6.3 mm | 6 | |
| Sept. 26 | Sunny | 27° /18° | 80.4 mm | 6 | |
| Sept. 27 | Sunny | 26° /18° | 36.7 mm | 6 | |
| Sept. 28 | Partly cloudy | 27° /17° | 0.4 mm | 6 | |
| Sept. 29 | Sunny | 28° /17° | 0 mm | 7 | |
| Sept. 30 | Partly cloudy | 27° /18° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Atlanta in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Atlanta forecast closer to your planned date for the most up-to-date weather information.
Change Month
Atlanta in September - FAQ
What are the expected maximum and minimum temperatures in Atlanta during September?
During September, expect a variety of temperatures with highs around 28° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Atlanta during September?
Significant rainfall exceeding 207.9 mm is expected in Atlanta during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Atlanta during September?
The average wind speed in Atlanta during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Atlanta
Explore the daily rainfall trends and prepare for Atlantas September weather 💧
Typically, Atlanta has 24 rainy days in September with a total of 207.9 mm of rainfall.
UV exposure in Atlanta during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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