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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 Jun 21, 2026

Overnight Low: 74 °F Partly Cloudy Monday High: 93 °F Mostly Sunny then Slight Chance T-storms Monday Night Low: 79 °F Mostly Clear Tuesday High: 95 °F Sunny then Chance T-storms Tuesday Night Low: 76 °F Chance T-storms then Chance Showers Wednesday High: 92 °F Mostly Sunny then Chance T-storms Wednesday Night Low: 75 °F Chance T-storms Thursday High: 90 °F Chance T-storms Thursday Night Low: 75 °F Chance T-storms

Overnight: Partly cloudy, with a low around 74. Light southwest wind. Monday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 93. Heat index values as high as 104. West wind 6 to 11 mph. Monday Night: Mostly clear, with a low around 79. Southwest wind 8 to 10 mph. Tuesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Heat index values as high as 105. West wind 9 to 13 mph, with gusts as high as 21 mph. Tuesday Night: A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Southwest wind 5 to 9 mph. Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Wednesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 75. Chance of precipitation is 30%. Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 90. Chance of precipitation is 30%. Thursday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Friday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91. Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Saturday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.

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

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