Greenville County (Greenville)
September
Weather in Greenville County, South Carolina for September 2026
Your guide to Greenville County weather in September - trends and predictions
So far, September 2026 in Greenville County shows a warmer trend than usual by 2.4 °F.
The forecast for the next days in Greenville County predicts a temperature of 23.8 °F, which is cooler than the historical average.
In general, the average temperature in Greenville County at the beginning of September is 30.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26.9 °F by the end of September.
The climate of Greenville County in September is notably wet, with an average of 13 rainy days, and a total of 176.3 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
13
Rainy days
0
Snow days
27°/18°
Temperatures
16 km/h
Avg max wind
71 %
Avg humidity
Greenville County Weather September
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Temperatures trend during September in Greenville County
See the weather trend as well as the moving average line
September weather in Greenville County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 32° /19° | 0.9 mm | 8 | |
| Sept. 2 | Patchy rain possible | 31° /19° | 0.1 mm | 8 | |
| Sept. 3 |  Partly cloudy | 31° /19° | 0.3 mm | 8 | |
| Sept. 4 | Partly cloudy | 32° /19° | 0 mm | 8 | |
| Sept. 5 |  Overcast | 32° /20° | 0.1 mm | 8 | |
| Sept. 6 |  Patchy light rain | 29° /20° | 3.9 mm | 7 | |
| Sept. 7 | Patchy rain possible | 28° /19° | 2.5 mm | 5 | |
| Sept. 8 | Partly cloudy | 27° /16° | 0 mm | 7 | |
| Sept. 9 |  Sunny | 29° /15° | 0 mm | 8 | |
| Sept. 10 | Sunny | 30° /16° | 0 mm | 8 | |
| Sept. 11 | Overcast | 29° /17° | 0.1 mm | 7 | |
| Sept. 12 | Patchy light drizzle | 26° /17° | 2.8 mm | 5 | |
| Sept. 13 | Light rain shower | 27° /19° | 2.1 mm | 6 | |
| Sept. 14 | Light rain shower | 29° /19° | 3.4 mm | 7 | |
| Sept. 15 | Patchy rain possible | 28° /18° | 0.2 mm | 6 | |
| Sept. 16 | Overcast | 26° /17° | 0.1 mm | 6 | |
| Sept. 17 | Overcast | 29° /17° | 0 mm | 7 | |
| Sept. 18 | Light rain | 28° /19° | 2.6 mm | 7 | |
| Sept. 19 |  Mist | 30° /19° | 2 mm | 5 | |
| Sept. 20 | Fog | 30° /20° | 4.7 mm | 6 | |
| Sept. 21 | Mist | 31° /20° | 0.7 mm | 7 | |
| Sept. 22 |  Cloudy | 31° /19° | 11 mm | 6 | |
| Sept. 23 | Overcast | 25° /17° | 2 mm | 5 | |
| Sept. 24 | Light rain shower | 26° /18° | 3.8 mm | 6 | |
| Sept. 25 | Light rain shower | 25° /18° | 8.8 mm | 6 | |
| Sept. 26 | Light rain shower | 26° /18° | 6.6 mm | 6 | |
| Sept. 27 |  Moderate or heavy rain shower | 27° /17° | 79.4 mm | 6 | |
| Sept. 28 | Overcast | 27° /16° | 0 mm | 6 | |
| Sept. 29 | Sunny | 28° /15° | 0 mm | 6.7 | |
| Sept. 30 | Sunny | 29° /16° | 0 mm | 6.8 | |
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Important Notice
Our weather forecast for Greenville 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 Greenville County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Greenville County in September - FAQ
What are the expected maximum and minimum temperatures in Greenville County during September?
During September, expect a variety of temperatures with highs around 27° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Greenville County during September?
Significant rainfall exceeding 176.3 mm is expected in Greenville County during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Greenville County during September?
The average wind speed in Greenville County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Greenville County
Explore the daily rainfall trends and prepare for Greenville Countys September weather 💧
Typically, Greenville County has 13 rainy days in September with a total of 176.3 mm of rainfall.
UV exposure in Greenville County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Greenville County?Get accurate weather forecasts for Greenville County, located at latitude 34.853 and longitude -82.394. Stay updated with localized weather information tailored for Greenville County.
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