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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 Jul 18, 2026

Overnight Low: 80 °F Mostly Clear Sunday High: 94 °F Sunny Sunday Night Low: 80 °F Mostly Clear Monday High: 93 °F Sunny Monday Night Low: 80 °F Slight Chance T-storms then Chance Showers Tuesday High: 92 °F Chance T-storms Tuesday Night Low: 80 °F Chance T-storms Wednesday High: 92 °F Chance T-storms Wednesday Night Low: 78 °F Showers Likely

Overnight: Mostly clear, with a low around 80. Southwest wind around 10 mph. Sunday: Sunny, with a high near 94. Heat index values as high as 106. Southwest wind 9 to 17 mph, with gusts as high as 24 mph. Sunday Night: Mostly clear, with a low around 80. South wind 8 to 13 mph, with gusts as high as 20 mph. Monday: Sunny, with a high near 93. Heat index values as high as 106. Southwest wind 6 to 14 mph, with gusts as high as 21 mph. Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 80. South wind around 11 mph. 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. Partly cloudy, with a low around 80. Wednesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 78. Chance of precipitation is 60%. Thursday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. Chance of precipitation is 70%. Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 76. Chance of precipitation is 60%. Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Friday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

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

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