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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 8:30 am EDT Aug 22, 2026

Today High: 91 °F Sunny then Chance T-storms Tonight Low: 76 °F Chance T-storms then Partly Cloudy Sunday High: 94 °F Sunny Sunday Night Low: 76 °F Partly Cloudy Monday High: 93 °F Sunny then Chance Showers Monday Night Low: 76 °F Chance Showers then Partly Cloudy Tuesday High: 91 °F Slight Chance T-storms then Chance T-storms Tuesday Night Low: 76 °F Chance T-storms Wednesday High: 90 °F Showers Likely

Today: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 103. Southwest wind 6 to 10 mph. Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76. Southwest wind 5 to 7 mph. Sunday: Sunny, with a high near 94. Heat index values as high as 103. West wind 5 to 8 mph. Sunday Night: Partly cloudy, with a low around 76. Southwest wind 3 to 7 mph. Monday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Southwest wind 3 to 8 mph. Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91. Tuesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. Wednesday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%. Wednesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. Thursday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 76. Chance of precipitation is 60%. Friday: Showers and thunderstorms likely. Mostly sunny, with a high near 91. Chance of precipitation is 60%.

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

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