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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 8:30 pm EDT Sep 3, 2026

Tonight Low: 78 °F Mostly Clear Friday High: 90 °F Mostly Sunny then Slight Chance T-storms Friday Night Low: 77 °F Mostly Clear Saturday High: 93 °F Sunny Saturday Night Low: 77 °F Chance T-storms Sunday High: 90 °F Chance T-storms then Showers Sunday Night Low: 74 °F Showers Labor Day High: 84 °F Showers Likely Monday Night Low: 73 °F Showers Likely then Chance Showers

Tonight: Mostly clear, with a low around 78. Southeast wind around 6 mph becoming calm in the evening. Friday: A slight chance of showers and thunderstorms between noon and 1pm. Sunny, with a high near 90. Heat index values as high as 105. Calm wind becoming southeast 5 to 9 mph in the afternoon. Chance of precipitation is 20%. Friday Night: Mostly clear, with a low around 77. South wind around 6 mph becoming calm in the evening. Saturday: Sunny, with a high near 93. Heat index values as high as 108. Calm wind becoming southwest 5 to 8 mph in the afternoon. Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 77. Southwest wind 5 to 9 mph. Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 90. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. Sunday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 74. Chance of precipitation is 80%. Labor Day: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 60%. Monday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Partly cloudy, with a low around 73. Chance of precipitation is 60%. Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%. Tuesday Night: Partly cloudy, with a low around 73. Wednesday: A 20 percent chance of showers. Mostly sunny, with a high near 85. Wednesday Night: Partly cloudy, with a low around 73. Thursday: Sunny, with a high near 89.

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

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