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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 8:32 pm EDT Jul 17, 2026

Overnight Low: 80 °F Mostly Clear Saturday High: 93 °F Sunny Saturday Night Low: 80 °F Mostly Clear Sunday High: 93 °F Sunny Sunday Night Low: 79 °F Chance T-storms then Chance Showers Monday High: 92 °F Chance T-storms Monday Night Low: 78 °F Chance T-storms Tuesday High: 92 °F Chance T-storms Tuesday Night Low: 80 °F Chance T-storms

Overnight: Mostly clear, with a low around 80. South wind 3 to 5 mph. Saturday: Sunny, with a high near 93. Heat index values as high as 106. South wind 5 to 15 mph. Saturday Night: Mostly clear, with a low around 80. South wind 9 to 13 mph, with gusts as high as 20 mph. Sunday: Sunny, with a high near 93. Heat index values as high as 106. Southwest wind 9 to 16 mph, with gusts as high as 23 mph. Sunday Night: A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 79. South wind 7 to 13 mph, with gusts as high as 20 mph. Monday: A 40 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 92. Monday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Tuesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 80. Wednesday: A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Chance of precipitation is 20%. Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 80. Thursday: Showers and thunderstorms likely. Partly sunny, with a high near 91. Chance of precipitation is 60%. Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 77. Chance of precipitation is 60%. Friday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 60%.

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

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