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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 Aug 16, 2026

Today High: 95 °F Mostly Sunny then Chance T-storms Tonight Low: 79 °F Chance T-storms then Partly Cloudy Monday High: 98 °F Sunny Monday Night Low: 81 °F Mostly Clear Tuesday High: 100 °F Sunny then Slight Chance T-storms Tuesday Night Low: 80 °F Chance T-storms Wednesday High: 95 °F Sunny then Chance T-storms Wednesday Night Low: 80 °F Chance T-storms then Partly Cloudy Thursday High: 96 °F Sunny then Slight Chance T-storms

Heat Advisory Today: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Heat index values as high as 112. Calm wind becoming south 5 to 7 mph in the afternoon. Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 79. South wind 3 to 5 mph. Monday: Sunny, with a high near 98. Heat index values as high as 117. West wind 3 to 7 mph. Monday Night: Mostly clear, with a low around 81. Southwest wind 6 to 9 mph. Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 100. West wind around 6 mph. Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 80. Wednesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Wednesday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 80. Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. Thursday Night: Partly cloudy, with a low around 79. Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Friday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

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

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