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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 9:22 am EDT Aug 12, 2026

Today High: 96 °F Sunny then Slight Chance T-storms Tonight Low: 79 °F Slight Chance T-storms then Mostly Clear Thursday High: 97 °F Sunny then Slight Chance T-storms Thursday Night Low: 81 °F Mostly Clear Friday High: 98 °F Mostly Sunny Friday Night Low: 81 °F Partly Cloudy Saturday High: 97 °F Mostly Sunny then Chance T-storms Saturday Night Low: 80 °F Chance T-storms Sunday High: 91 °F Mostly Sunny then Slight Chance T-storms

Heat Advisory Extreme Heat Watch Today: A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 96. Heat index values as high as 110. West wind around 8 mph. Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 79. West wind 3 to 7 mph. Thursday: A slight chance of showers and thunderstorms between 2pm and 3pm. Sunny, with a high near 97. Heat index values as high as 111. West wind 3 to 8 mph. Chance of precipitation is 20%. Thursday Night: Mostly clear, with a low around 81. Southwest wind 6 to 8 mph. Friday: Mostly sunny, with a high near 98. Southwest wind 5 to 9 mph. Friday Night: Partly cloudy, with a low around 81. Saturday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 97. Saturday Night: A 40 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 80. Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Sunday Night: Partly cloudy, with a low around 80. Monday: Mostly sunny, with a high near 96. Monday Night: Mostly clear, with a low around 80. Tuesday: A 30 percent chance of showers and thunderstorms. Sunny, with a high near 96.

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

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