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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 2:35 pm EDT Aug 4, 2026

This Afternoon High: 89 °F Partly Sunny Tonight Low: 76 °F Chance T-storms Wednesday High: 88 °F Chance T-storms then Slight Chance T-storms Wednesday Night Low: 77 °F Partly Cloudy then Chance T-storms Thursday High: 89 °F Chance T-storms Thursday Night Low: 78 °F Slight Chance T-storms Friday High: 90 °F Chance T-storms Friday Night Low: 77 °F Partly Cloudy then Chance T-storms Saturday High: 89 °F Showers Likely

This Afternoon: Partly sunny, with a high near 89. Heat index values as high as 102. South wind around 9 mph. Tonight: A 50 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 76. South wind 3 to 8 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Wednesday: A 50 percent chance of showers and thunderstorms, mainly before noon. Partly sunny, with a high near 88. Light south wind increasing to 6 to 11 mph in the morning. New rainfall amounts between a quarter and half of an inch possible. Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 77. South wind 5 to 8 mph. Thursday: A 50 percent chance of showers and thunderstorms, mainly between 7am and 2pm. Mostly sunny, with a high near 89. Light south wind increasing to 5 to 10 mph in the morning. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Thursday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Friday: A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 90. Friday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 77. Chance of precipitation is 30%. 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. Mostly sunny, with a high near 89. Chance of precipitation is 60%. 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. Mostly sunny, with a high near 91. Sunday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Monday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79. Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.

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

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