Newnan (GA)
September
Weather in Newnan, Georgia for September 2025
Your guide to Newnan weather in September - trends and predictions
In general, the average temperature in Newnan at the beginning of September is 28.1 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 25.7 °F by the end of September.
The climate of Newnan in September is notably wet, with an average of 15 rainy days, and a total of 432.7 mm of precipitation.
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Temperatures
Rain 🌧️
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15
Dry days
15
Rainy days
0
Snow days
27°/19°
Temperatures
16 km/h
Avg max wind
74 %
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° /21° | 1.9 mm | 7 | |
| Sept. 2 |  Overcast | 32° /21° | 1.4 mm | 7 | |
| Sept. 3 |  Patchy rain possible | 30° /21° | 0.3 mm | 7 | |
| Sept. 4 |  Partly cloudy | 29° /18° | 0 mm | 7 | |
| Sept. 5 | Overcast | 25° /19° | 0 mm | 6 | |
| Sept. 6 |  Moderate or heavy rain shower | 21° /18° | 8.7 mm | 5 | |
| Sept. 7 | Patchy rain possible | 28° /17° | 1.7 mm | 6 | |
| Sept. 8 | Partly cloudy | 27° /16° | 0 mm | 7 | |
| Sept. 9 | Overcast | 29° /17° | 0 mm | 6 | |
| Sept. 10 | Overcast | 30° /17° | 0 mm | 7 | |
| Sept. 11 | Patchy rain possible | 25° /18° | 6.4 mm | 6 | |
| Sept. 12 | Moderate or heavy rain shower | 21° /18° | 10.9 mm | 5 | |
| Sept. 13 | Moderate or heavy rain shower | 22° /19° | 44.5 mm | 5 | |
| Sept. 14 | Moderate rain at times | 22° /19° | 7.5 mm | 5 | |
| Sept. 15 | Patchy rain possible | 24° /18° | 1 mm | 5 | |
| Sept. 16 | Partly cloudy | 29° /18° | 0 mm | 7 | |
| Sept. 17 | Patchy rain possible | 28° /17° | 0.1 mm | 6 | |
| Sept. 18 | Patchy rain possible | 27° /17° | 0.1 mm | 6 | |
| Sept. 19 | Patchy rain possible | 29° /18° | 0.3 mm | 6 | |
| Sept. 20 | Overcast | 29° /19° | 0 mm | 6 | |
| Sept. 21 |  Cloudy | 30° /20° | 0 mm | 7 | |
| Sept. 22 | Patchy rain possible | 33° /22° | 0.1 mm | 7 | |
| Sept. 23 | Overcast | 33° /22° | 0 mm | 7 | |
| Sept. 24 | Moderate rain at times | 31° /22° | 2 mm | 7 | |
| Sept. 25 | Moderate or heavy rain shower | 27° /21° | 49 mm | 6 | |
| Sept. 26 | Moderate or heavy rain shower | 21° /20° | 178.4 mm | 5 | |
| Sept. 27 | Moderate or heavy rain shower | 22° /19° | 118.4 mm | 5 | |
| Sept. 28 | Overcast | 26° /19° | 0 mm | 6 | |
| Sept. 29 | Overcast | 27° /19° | 0 mm | 6 | |
| Sept. 30 |  Mist | 26° /19° | 0 mm | 6 | |
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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 27° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Newnan during September?
Significant rainfall exceeding 432.7 mm is expected in Newnan during September, occurring over more than 15 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 16 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 💧
UV exposure in Newnan during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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