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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 8:33 pm EDT Aug 13, 2026

Overnight Low: 80 °F Partly Cloudy Friday High: 95 °F Mostly Sunny then Chance T-storms Friday Night Low: 80 °F Mostly Clear Saturday High: 96 °F Sunny Saturday Night Low: 80 °F Partly Cloudy Sunday High: 96 °F Mostly Sunny then Slight Chance T-storms Sunday Night Low: 81 °F Partly Cloudy Monday High: 99 °F Sunny then Slight Chance T-storms Monday Night Low: 82 °F Mostly Clear

Extreme Heat Warning Overnight: Partly cloudy, with a low around 80. Southwest wind 3 to 6 mph. Friday: A 40 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Mostly sunny, with a high near 95. Heat index values as high as 115. Calm wind becoming south 5 to 9 mph in the morning. Friday Night: Mostly clear, with a low around 80. Southwest wind 6 to 9 mph. Saturday: Sunny, with a high near 96. Heat index values as high as 116. Southwest wind 5 to 9 mph. Saturday Night: Partly cloudy, with a low around 80. Southwest wind 5 to 8 mph. Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Sunday Night: Partly cloudy, with a low around 81. Monday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 99. Monday Night: Mostly clear, with a low around 82. Tuesday: Sunny, with a high near 99. Tuesday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 81. Wednesday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 96. Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. Thursday: A 20 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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