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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 8:47 pm EDT Sep 5, 2026

Tonight Low: 78 °F Chance T-storms Sunday High: 93 °F Sunny then T-storms Likely Sunday Night Low: 73 °F T-storms Likely then Showers Likely Labor Day High: 84 °F Showers Likely Monday Night Low: 73 °F Showers Likely Tuesday High: 85 °F Chance Showers then Chance T-storms Tuesday Night Low: 74 °F Chance T-storms Wednesday High: 86 °F Slight Chance T-storms Wednesday Night Low: 74 °F Partly Cloudy

Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 78. Southwest wind 3 to 7 mph. Chance of precipitation is 30%. Sunday: Showers and thunderstorms likely, mainly after 4pm. Increasing clouds, with a high near 93. Heat index values as high as 108. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. Sunday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 73. Northeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. Labor Day: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84. East wind 9 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. 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. Mostly cloudy, with a low around 73. Northeast wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 74. Wednesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Wednesday Night: Partly cloudy, with a low around 74. Thursday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89. Thursday Night: Mostly clear, with a low around 75. Friday: A 40 percent chance of showers and thunderstorms. Sunny, with a high near 90. Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

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

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