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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 6, 2026

This Afternoon High: 89 °F Chance T-storms Tonight Low: 78 °F Partly Cloudy Friday High: 90 °F Slight Chance T-storms Friday Night Low: 77 °F Partly Cloudy then Chance Showers Saturday High: 87 °F Showers Likely Saturday Night Low: 76 °F Mostly Cloudy then Slight Chance T-storms Sunday High: 90 °F Chance T-storms Sunday Night Low: 78 °F Partly Cloudy Monday High: 92 °F Chance T-storms

This Afternoon: A 30 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 89. Heat index values as high as 102. Southeast wind around 9 mph. Tonight: Partly cloudy, with a low around 78. Southeast wind around 6 mph becoming calm in the evening. Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Heat index values as high as 102. Light southeast wind increasing to 6 to 11 mph in the morning. Friday Night: A 30 percent chance of showers after 5am. 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 7am, then showers likely and possibly a thunderstorm between 7am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Calm wind becoming southeast 5 to 8 mph in the afternoon. 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 slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 76. Chance of precipitation is 20%. Sunday: A 40 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 90. Sunday Night: 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: 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. Sunny, with a high near 95. Wednesday Night: Partly cloudy, with a low around 79. Thursday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.

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

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