Forsyth County (Cumming)
September
Weather in Forsyth County, Georgia for September 2026
Your guide to Forsyth County weather in September - trends and predictions
So far, September 2026 in Forsyth County shows a warmer trend than usual by 4.4 °F.
The forecast for the next days in Forsyth County predicts temperatures to be around 28 °F, close to the historical average.
In general, the average temperature in Forsyth County at the beginning of September is 30.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26.4 °F by the end of September.
The climate of Forsyth County in September is notably wet, with an average of 15 rainy days, and a total of 334.3 mm of precipitation.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
15
Dry days
15
Rainy days
0
Snow days
27°/19°
Temperatures
14 km/h
Avg max wind
70 %
Avg humidity
Forsyth County Weather September
Move between months or click on a day
Temperatures trend during September in Forsyth County
See the weather trend as well as the moving average line
September weather in Forsyth County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy light drizzle | 31° /20° | 0.8 mm | 7 | |
| Sept. 2 | Patchy light drizzle | 30° /19° | 0.3 mm | 7 | |
| Sept. 3 |  Cloudy | 31° /19° | 0 mm | 7 | |
| Sept. 4 |  Partly cloudy | 32° /20° | 1.2 mm | 8 | |
| Sept. 5 |  Patchy rain possible | 32° /21° | 0.1 mm | 7 | |
| Sept. 6 | Light rain | 30° /20° | 3.8 mm | 5 | |
| Sept. 7 |  Mist | 28° /18° | 1.7 mm | 5 | |
| Sept. 8 | Cloudy | 27° /18° | 0 mm | 7 | |
| Sept. 9 | Partly cloudy | 29° /17° | 0 mm | 8 | |
| Sept. 10 |  Sunny | 29° /16° | 0.1 mm | 7 | |
| Sept. 11 |  Overcast | 29° /17° | 1.8 mm | 7 | |
| Sept. 12 |  Moderate rain | 25° /19° | 58.5 mm | 4 | |
| Sept. 13 | Light rain shower | 26° /18° | 2.4 mm | 6 | |
| Sept. 14 |  Moderate or heavy rain shower | 28° /18° | 7 mm | 7 | |
| Sept. 15 | Patchy rain possible | 27° /20° | 1.2 mm | 7 | |
| Sept. 16 | Partly cloudy | 28° /17° | 0 mm | 7 | |
| Sept. 17 | Sunny | 33° /20° | 0.5 mm | 8.2 | |
| Sept. 18 | Sunny | 35° /21° | 26.4 mm | 8.5 | |
| Sept. 19 | Mist | 29° /21° | 19.1 mm | 5.7 | |
| Sept. 20 | Overcast | 30° /19° | 7 mm | 7 | |
| Sept. 21 | Light rain shower | 26° /21° | 19.7 mm | 6 | |
| Sept. 22 | Light rain shower | 24° /19° | 16.2 mm | 5 | |
| Sept. 23 | Patchy rain possible | 27° /19° | 0.3 mm | 6 | |
| Sept. 24 | Overcast | 29° /22° | 10 mm | 6 | |
| Sept. 25 | Sunny | 25° /15° | 0.9 mm | 6 | |
| Sept. 26 | Sunny | 26° /16° | 0 mm | 7 | |
| Sept. 27 | Overcast | 26° /17° | 0 mm | 7 | |
| Sept. 28 | Overcast | 27° /18° | 0 mm | 6 | |
| Sept. 29 | Overcast | 28° /19° | 0.1 mm | 6 | |
| Sept. 30 | Fog | 24° /17° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Forsyth County 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 Forsyth County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Forsyth County in September - FAQ
What are the expected maximum and minimum temperatures in Forsyth County 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 Forsyth County during September?
Significant rainfall exceeding 334.3 mm is expected in Forsyth County during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Forsyth County during September?
The average wind speed in Forsyth County during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Forsyth County
Explore the daily rainfall trends and prepare for Forsyth Countys September weather 💧
Typically, Forsyth County has 15 rainy days in September with a total of 334.3 mm of rainfall.
UV exposure in Forsyth County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Forsyth County
Select a location for an accurate weather forecast
More Locations Quick links
More Forsyth County weather pages
You are here
Where is Forsyth County?Get accurate weather forecasts for Forsyth County, located at latitude 34.207 and longitude -84.14. Stay updated with localized weather information tailored for Forsyth County.
Found a mistake?
We appreciate your attention to details. Tell us here.