Atlanta
September
Weather in Atlanta for September 2025
Your guide to Atlanta weather in September - trends and predictions
In general, the average temperature in Atlanta at the beginning of September is 30.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.4 °F by the end of September.
Atlanta sees moderate rainfall in September, averaging 6 rainy days.
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24
Dry days
6
Rainy days
0
Snow days
30°/19°
Temperatures
13 km/h
Avg max wind
58 %
Avg humidity
Atlanta in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | 2  30° | 3  31° | 4  32° | 5 30° | 6 29° | 7  31° |
| 8 30° | 9  31° | 10 32° | 11 29° | 12  27° | 13 25° | 14 24° |
| 15 27° | 16  27° | 17  29° | 18  27° | 19 29° | 20 30° | 21 30° |
| 22 31° | 23 33° | 24 31° | 25 29° | 26 26° | 27 24° | 28 26° |
| 29 28° | 30 28° |
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Temperatures trend during September in Atlanta
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Patchy rain possible | 32° /22° | 6.9 mm | 7 | |
| Sept. 2 | Overcast | 30° /20° | 0.9 mm | 7 | |
| Sept. 3 | Fog | 31° /19° | 0 mm | 8 | |
| Sept. 4 | Partly cloudy | 32° /19° | 0 mm | 8 | |
| Sept. 5 | Overcast | 30° /21° | 0.1 mm | 7 | |
| Sept. 6 | Overcast | 29° /19° | 8 mm | 7 | |
| Sept. 7 | Thundery outbreaks possible | 31° /20° | 4.4 mm | 7 | |
| Sept. 8 | Partly cloudy | 30° /20° | 0 mm | 8 | |
| Sept. 9 | Moderate or heavy rain with thunder | 31° /19° | 2.8 mm | 8 | |
| Sept. 10 | Light rain shower | 32° /19° | 0.9 mm | 8 | |
| Sept. 11 | Overcast | 29° /20° | 0 mm | 7 | |
| Sept. 12 | Cloudy | 27° /19° | 9 mm | 6 | |
| Sept. 13 | Overcast | 25° /20° | 4 mm | 6 | |
| Sept. 14 | Overcast | 24° /19° | 12.7 mm | 6 | |
| Sept. 15 | Overcast | 27° /19° | 0.1 mm | 6 | |
| Sept. 16 | Moderate or heavy rain shower | 27° /18° | 2.4 mm | 6 | |
| Sept. 17 | Patchy light rain | 29° /18° | 2.4 mm | 7 | |
| Sept. 18 | Sunny | 27° /18° | 2.6 mm | 7 | |
| Sept. 19 | Overcast | 29° /19° | 0 mm | 7 | |
| Sept. 20 | Partly cloudy | 30° /20° | 0 mm | 8 | |
| Sept. 21 | Patchy rain possible | 30° /21° | 0.1 mm | 7 | |
| Sept. 22 | Overcast | 31° /21° | 0 mm | 7 | |
| Sept. 23 | Partly cloudy | 33° /22° | 0 mm | 8 | |
| Sept. 24 | Sunny | 31° /21° | 0 mm | 8 | |
| Sept. 25 | Cloudy | 29° /22° | 1.8 mm | 7 | |
| Sept. 26 | Cloudy | 26° /20° | 196.3 mm | 6 | |
| Sept. 27 | Patchy rain possible | 24° /19° | 88 mm | 6 | |
| Sept. 28 | Overcast | 26° /17° | 0.9 mm | 6 | |
| Sept. 29 | Partly cloudy | 28° /18° | 0 mm | 7 | |
| Sept. 30 | Partly cloudy | 28° /19° | 0 mm | 7 | |
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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.
Atlanta in September - FAQ
What are the expected maximum and minimum temperatures in Atlanta during September?
Expect warm days with temperatures around 30°, cooling to mild conditions of 19° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Atlanta during September?
Expect minimal rainfall in Atlanta during September, with a total of 19 mm over approximately 6 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Atlanta during September?
The average wind speed in Atlanta during September is 13 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 💧
UV exposure in Atlanta during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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