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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 9:17 pm EDT Aug 12, 2026

Overnight Low: 79 °F Mostly Clear Thursday High: 96 °F Sunny Thursday Night Low: 81 °F Partly Cloudy Friday High: 96 °F Sunny Friday Night Low: 81 °F Partly Cloudy Saturday High: 96 °F Mostly Sunny then Slight Chance T-storms Saturday Night Low: 79 °F Slight Chance T-storms Sunday High: 94 °F Mostly Sunny then Slight Chance T-storms Sunday Night Low: 80 °F Partly Cloudy

Extreme Heat Warning Overnight: Mostly clear, with a low around 79. West wind 3 to 5 mph. Thursday: Sunny, with a high near 96. Heat index values as high as 112. West wind 3 to 8 mph. Thursday Night: Partly cloudy, with a low around 81. Southwest wind 5 to 9 mph. Friday: Sunny, with a high near 96. Heat index values as high as 115. Light southwest wind increasing to 5 to 9 mph in the afternoon. Friday Night: Partly cloudy, with a low around 81. Southwest wind 6 to 9 mph. Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Saturday Night: A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 79. Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Sunday Night: Partly cloudy, with a low around 80. Monday: Sunny, with a high near 97. Monday Night: Mostly clear, with a low around 82. Tuesday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 99. Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81. Wednesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.

Charleston SCSimilar City Names  32.79°N 80.01°W (Elev. 10 ft)

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