Charleston (WV)
September
Weather in Charleston, West Virginia for September 2026
Your guide to Charleston weather in September - trends and predictions
So far, September 2026 in Charleston is slightly warmer than the historical average by 1.2 °F.
Expect cooler weather in the next days in Charleston with the forecast suggesting a temperature of 21.8 °F, lower than the historical average.
In general, the average temperature in Charleston at the beginning of September is 29 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.1 °F by the end of September.
The climate of Charleston in September is notably wet, with an average of 11 rainy days, and a total of 490 mm of precipitation.
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Temperatures
Rain 🌧️
More
19
Dry days
11
Rainy days
0
Snow days
25°/16°
Temperatures
11 km/h
Avg max wind
72 %
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 | 31° /17° | 0 mm | 8 | |
| Sept. 2 |  Partly cloudy | 31° /18° | 0 mm | 8 | |
| Sept. 3 |  Overcast | 31° /18° | 1.4 mm | 7 | |
| Sept. 4 |  Torrential rain shower | 28° /19° | 54.1 mm | 7 | |
| Sept. 5 | Overcast | 30° /20° | 53.9 mm | 6 | |
| Sept. 6 | Heavy rain | 27° /16° | 62 mm | 7 | |
| Sept. 7 | Fog | 25° /15° | 0 mm | 6 | |
| Sept. 8 |  Sunny | 27° /13° | 0 mm | 6 | |
| Sept. 9 | Sunny | 28° /13° | 0.1 mm | 7 | |
| Sept. 10 | Sunny | 27° /15° | 39.1 mm | 5 | |
| Sept. 11 | Sunny | 28° /15° | 3.4 mm | 5 | |
| Sept. 12 | Sunny | 29° /15° | 3.5 mm | 5 | |
| Sept. 13 | Partly cloudy | 28° /16° | 1.4 mm | 6 | |
| Sept. 14 | Partly cloudy | 28° /16° | 0 mm | 7 | |
| Sept. 15 | Sunny | 30° /14° | 0 mm | 7 | |
| Sept. 16 | Partly cloudy | 29° /16° | 0 mm | 7 | |
| Sept. 17 |  Moderate or heavy rain shower | 25° /17° | 24.1 mm | 5 | |
| Sept. 18 |  Heavy rain at times | 26° /18° | 1.3 mm | 5 | |
| Sept. 19 |  Patchy rain possible | 29° /17° | 1.7 mm | 6 | |
| Sept. 20 | Overcast | 28° /17° | 1.9 mm | 5 | |
| Sept. 21 | Patchy rain possible | 29° /18° | 6.1 mm | 5 | |
| Sept. 22 | Overcast | 26° /17° | 2.5 mm | 5 | |
| Sept. 23 | Moderate or heavy rain shower | 25° /17° | 44.7 mm | 4 | |
| Sept. 24 | Moderate or heavy rain shower | 22° /16° | 62.8 mm | 4 | |
| Sept. 25 | Moderate or heavy rain shower | 23° /15° | 20.8 mm | 5 | |
| Sept. 26 | Moderate or heavy rain shower | 25° /18° | 12.1 mm | 6 | |
| Sept. 27 | Sunny | 20° /9° | 0 mm | 5.9 | |
| Sept. 28 | Sunny | 21° /10° | 0 mm | 3.5 | |
| Sept. 29 | Sunny | 24° /13° | 0 mm | 6 | |
| Sept. 30 | Sunny | 27° /14° | 0 mm | 6.2 | |
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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 490 mm is expected in Charleston during September, occurring over more than 11 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 11 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 💧
Typically, Charleston has 11 rainy days in September with a total of 490 mm of rainfall.
UV exposure in Charleston during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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