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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 2:37 am EDT Sep 13, 2026

Today High: 91 °F Sunny then Slight Chance T-storms Tonight Low: 76 °F Decreasing Clouds Monday High: 94 °F Sunny Monday Night Low: 75 °F Partly Cloudy Tuesday High: 86 °F Mostly Sunny Tuesday Night Low: 70 °F Mostly Clear Wednesday High: 85 °F Sunny Wednesday Night Low: 70 °F Mostly Clear Thursday High: 86 °F Sunny

Today: A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 91. Heat index values as high as 103. West wind 3 to 7 mph. Chance of precipitation is 20%. Tonight: Mostly cloudy, then gradually becoming clear, with a low around 76. Southwest wind around 6 mph becoming calm in the evening. Monday: Sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming north around 5 mph. Monday Night: Partly cloudy, with a low around 75. Calm wind becoming northeast around 6 mph after midnight. Tuesday: Mostly sunny, with a high near 86. Northeast wind 13 to 16 mph, with gusts as high as 24 mph. 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: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Saturday: A 20 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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