Charleston (WV)
September
Weather in Charleston, West Virginia for September 2025
Your guide to Charleston weather in September - trends and predictions
Until now, September 2025 in Charleston is slightly cooler than the historical average by -0.7 °F.
The forecast for the upcoming days in Charleston predicts a temperature of 29 °F, which is slightly above the historical average.
In general, the average temperature in Charleston at the beginning of September is 23.3 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 25.9 °F by the end of September.
The climate of Charleston in September is notably wet, with an average of 12 rainy days, and a total of 453.5 mm of precipitation.
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Temperatures
Rain 🌧️
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18
Dry days
12
Rainy days
0
Snow days
25°/16°
Temperatures
12 km/h
Avg max wind
71 %
Avg humidity
Charleston Weather September
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Temperatures trend during September in Charleston
See the weather trend as well as the moving average line
September weather in Charleston day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Mist | 25° /12° | 0 mm | 6 | |
| Sept. 2 |  Partly cloudy | 25° /16° | 0 mm | 7 | |
| Sept. 3 |  Overcast | 24° /14° | 0 mm | 5 | |
| Sept. 4 |  Torrential rain shower | 20° /17° | 108.2 mm | 5 | |
| Sept. 5 | Overcast | 28° /19° | 0 mm | 6 | |
| Sept. 6 | Heavy rain | 23° /14° | 124.1 mm | 5 | |
| Sept. 7 | Fog | 18° /13° | 0 mm | 4 | |
| Sept. 8 |  Sunny | 23° /9° | 0 mm | 6 | |
| Sept. 9 | Sunny | 25° /10° | 0 mm | 7 | |
| Sept. 10 | Sunny | 27° /11° | 0 mm | 7 | |
| Sept. 11 | Sunny | 29° /13° | 0 mm | 8 | |
| Sept. 12 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 13 | Partly cloudy | 28° /17° | 0 mm | 7 | |
| Sept. 14 | Partly cloudy | 30° /17° | 0 mm | 1.5 | |
| Sept. 15 | Partly cloudy | 29° /18° | 0 mm | 1.5 | |
| Sept. 16 |  Cloudy | 26° /18° | 0 mm | 1.2 | |
| Sept. 17 | Sunny | 28° /15° | 0 mm | 1.5 | |
| Sept. 18 | Sunny | 29° /14° | 0 mm | 0 | |
| Sept. 19 | Sunny | 30° /16° | 0 mm | 6 | |
| Sept. 20 | Sunny | 32° /16° | 0 mm | 6 | |
| Sept. 21 |  Patchy rain possible | 28° /17° | 0.8 mm | 5 | |
| Sept. 22 | Patchy rain possible | 29° /14° | 0.4 mm | 5 | |
| Sept. 23 | Patchy rain possible | 30° /17° | 0.2 mm | 5 | |
| Sept. 24 | Patchy rain possible | 26° /18° | 0.7 mm | 5 | |
| Sept. 25 | Patchy rain possible | 28° /20° | 0.6 mm | 5 | |
| Sept. 26 | Patchy rain possible | 31° /19° | 1.9 mm | 5 | |
| Sept. 27 | Partly cloudy | 30° /18° | 0 mm | 6 | |
| Sept. 28 |  Moderate or heavy rain shower | 23° /19° | 6.6 mm | 5 | |
| Sept. 29 | Moderate or heavy rain shower | 23° /19° | 13.5 mm | 5 | |
| Sept. 30 | Light rain shower | 20° /17° | 7.3 mm | 5 | |
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Important Notice
Our weather forecast for Charleston 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 Charleston forecast closer to your planned date for the most up-to-date weather information.
Change Month
Charleston in September - FAQ
What are the expected maximum and minimum temperatures in Charleston during September?
During September, expect a variety of temperatures with highs around 25° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Charleston during September?
Significant rainfall exceeding 453.5 mm is expected in Charleston during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Charleston during September?
The average wind speed in Charleston during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Charleston
Explore the daily rainfall trends and prepare for Charlestons September weather 💧
UV exposure in Charleston during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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