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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 Jun 20, 2026

Overnight Low: 74 °F Mostly Cloudy Sunday High: 91 °F Mostly Sunny Sunday Night Low: 77 °F Mostly Clear Monday High: 92 °F Sunny then Chance T-storms Monday Night Low: 78 °F Chance T-storms then Mostly Clear Tuesday High: 95 °F Sunny then Chance T-storms Tuesday Night Low: 76 °F Chance T-storms Wednesday High: 93 °F Mostly Sunny then Chance T-storms Wednesday Night Low: 77 °F Chance T-storms

Overnight: Mostly cloudy, with a low around 74. Calm wind. Sunday: Mostly sunny, with a high near 91. Calm wind becoming south 5 to 9 mph in the afternoon. Sunday Night: Mostly clear, with a low around 77. South wind 3 to 8 mph. Monday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Southwest wind 5 to 13 mph, with gusts as high as 20 mph. Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 78. Southwest wind 8 to 11 mph. Tuesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76. Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Wednesday Night: A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 77. Thursday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 92. Thursday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. Saturday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.

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

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