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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 2:40 pm EDT Aug 5, 2026

Tonight Low: 77 °F Partly Cloudy then Chance T-storms Thursday High: 89 °F Chance T-storms then Showers Likely Thursday Night Low: 78 °F Partly Cloudy then Slight Chance T-storms Friday High: 89 °F Chance T-storms Friday Night Low: 77 °F Partly Cloudy then Chance T-storms Saturday High: 88 °F Showers Likely Saturday Night Low: 77 °F Chance Showers then Slight Chance T-storms Sunday High: 90 °F Chance T-storms Sunday Night Low: 78 °F Mostly Cloudy then Slight Chance T-storms

Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 77. South wind 5 to 10 mph becoming light after midnight. Thursday: Showers and thunderstorms likely, mainly before 1pm. Mostly sunny, with a high near 89. Heat index values as high as 103. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Thursday Night: A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 78. South wind around 6 mph becoming calm in the evening. Friday: A 30 percent chance of showers and thunderstorms, mainly between 8am and 2pm. Mostly sunny, with a high near 89. Heat index values as high as 102. Light southeast wind increasing to 6 to 11 mph in the afternoon. Friday Night: A 30 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 77. Southeast wind 5 to 7 mph becoming calm in the evening. Saturday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Saturday Night: A chance of showers before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 77. Chance of precipitation is 30%. Sunday: A 30 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 90. Sunday Night: A 20 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 78. Monday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 92. Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Tuesday Night: Partly cloudy, with a low around 79. Wednesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.

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

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