| NWS Forecast for: Summerville SC Issued by: National Weather Service Charleston, SC Last Update: 9:17 pm EDT Aug 12, 2026 |  |
Tonight: Mostly clear, with a low around 76. Calm wind. Thursday: Increasing clouds, with a high near 98. Heat index values as high as 111. West wind 3 to 5 mph. Thursday Night: Partly cloudy, with a low around 77. South wind 3 to 6 mph. Friday: A 20 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 98. Heat index values as high as 113. Calm wind becoming southwest around 6 mph in the afternoon. Friday Night: Partly cloudy, with a low around 78. Southwest wind 3 to 6 mph. Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 97. Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 77. Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Sunday Night: A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 77. Monday: Sunny, with a high near 99. Monday Night: Mostly clear, with a low around 79. Tuesday: A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 100. Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Wednesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96. | |
| Summerville SC 33.01°N 80.17°W (Elev. 49 ft) | |
Visit your local NWS office at: https://www.weather.gov/chs |
