Newnan (GA)
September
Weather in Newnan, Georgia for September 2026
Your guide to Newnan weather in September - trends and predictions
So far, September 2026 in Newnan shows a warmer trend than usual by 2.3 °F.
The forecast for the next days in Newnan predicts a temperature of 24.2 °F, which is cooler than the historical average.
In general, the average temperature in Newnan at the beginning of September is 31.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.6 °F by the end of September.
The climate of Newnan in September is notably wet, with an average of 11 rainy days, and a total of 242.3 mm of precipitation.
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Temperatures
Rain 🌧️
More
19
Dry days
11
Rainy days
0
Snow days
28°/20°
Temperatures
13 km/h
Avg max wind
69 %
Avg humidity
Newnan Weather September
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Temperatures trend during September in Newnan
See the weather trend as well as the moving average line
September weather in Newnan day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Heavy rain at times | 32° /20° | 0.6 mm | 8 | |
| Sept. 2 |  Overcast | 32° /20° | 0.5 mm | 8 | |
| Sept. 3 |  Patchy rain possible | 32° /20° | 0.1 mm | 8 | |
| Sept. 4 |  Sunny | 32° /19° | 0 mm | 8 | |
| Sept. 5 | Overcast | 32° /21° | 0.5 mm | 8 | |
| Sept. 6 |  Moderate or heavy rain shower | 29° /20° | 2.9 mm | 6 | |
| Sept. 7 | Patchy rain possible | 29° /19° | 0.6 mm | 7 | |
| Sept. 8 |  Partly cloudy | 28° /18° | 0 mm | 7 | |
| Sept. 9 | Overcast | 29° /18° | 0 mm | 7 | |
| Sept. 10 | Overcast | 31° /17° | 0.1 mm | 8 | |
| Sept. 11 | Patchy rain possible | 29° /18° | 24.5 mm | 6 | |
| Sept. 12 | Moderate or heavy rain shower | 27° /19° | 7.2 mm | 5 | |
| Sept. 13 | Moderate or heavy rain shower | 28° /20° | 15.1 mm | 7 | |
| Sept. 14 | Sunny | 29° /20° | 2.5 mm | 7 | |
| Sept. 15 | Patchy rain possible | 27° /20° | 0.4 mm | 6 | |
| Sept. 16 | Partly cloudy | 30° /19° | 0.1 mm | 8 | |
| Sept. 17 | Patchy rain possible | 29° /18° | 2.1 mm | 7 | |
| Sept. 18 | Patchy rain possible | 31° /19° | 0.1 mm | 7 | |
| Sept. 19 | Patchy rain possible | 31° /20° | 2 mm | 6 | |
| Sept. 20 | Overcast | 30° /19° | 1.1 mm | 7 | |
| Sept. 21 |  Cloudy | 30° /20° | 0.3 mm | 6 | |
| Sept. 22 | Patchy rain possible | 31° /21° | 4.9 mm | 5 | |
| Sept. 23 | Overcast | 29° /20° | 1 mm | 5 | |
| Sept. 24 | Moderate rain at times | 28° /20° | 0.7 mm | 6 | |
| Sept. 25 | Moderate or heavy rain shower | 26° /18° | 27.8 mm | 7 | |
| Sept. 26 | Moderate or heavy rain shower | 24° /20° | 94.6 mm | 6 | |
| Sept. 27 | Sunny | 26° /14° | 0 mm | 6.2 | |
| Sept. 28 | Sunny | 28° /13° | 0 mm | 7.3 | |
| Sept. 29 | Sunny | 30° /15° | 0 mm | 7.1 | |
| Sept. 30 | Sunny | 31° /17° | 0 mm | 7.2 | |
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Important Notice
Our weather forecast for Newnan 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 Newnan forecast closer to your planned date for the most up-to-date weather information.
Change Month
Newnan in September - FAQ
What are the expected maximum and minimum temperatures in Newnan during September?
During September, expect a variety of temperatures with highs around 28° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Newnan during September?
Significant rainfall exceeding 242.3 mm is expected in Newnan during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Newnan during September?
The average wind speed in Newnan during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Newnan
Explore the daily rainfall trends and prepare for Newnans September weather 💧
Typically, Newnan has 11 rainy days in September with a total of 242.3 mm of rainfall.
UV exposure in Newnan during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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