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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 2:40 am EDT Sep 12, 2026

Today High: 88 °F Chance T-storms Tonight Low: 76 °F Chance T-storms then Partly Cloudy Sunday High: 90 °F Mostly Sunny then Chance T-storms Sunday Night Low: 75 °F Chance T-storms then Mostly Clear Monday High: 91 °F Sunny Monday Night Low: 76 °F Mostly Clear Tuesday High: 86 °F Mostly Sunny Tuesday Night Low: 70 °F Mostly Clear Wednesday High: 85 °F Sunny

Today: A 40 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 88. Calm wind becoming south 5 to 8 mph in the afternoon. Tonight: A chance of thunderstorms, mainly before 7pm. Partly cloudy, with a low around 76. South wind 3 to 7 mph. Chance of precipitation is 30%. Sunday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 90. Heat index values as high as 103. West wind 3 to 7 mph. Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Southwest wind around 6 mph becoming calm in the evening. Monday: Sunny, with a high near 91. Calm wind becoming northeast around 5 mph in the afternoon. Monday Night: Mostly clear, with a low around 76. Tuesday: Mostly sunny, with a high near 86. Tuesday Night: Mostly clear, with a low around 70. Wednesday: Sunny, with a high near 85. Wednesday Night: Mostly clear, with a low around 70. Thursday: Sunny, with a high near 86. Thursday Night: Mostly clear, with a low around 72. Friday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

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

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