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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 2:35 pm EDT May 26, 2026

Tonight Low: 76 °F Partly Cloudy then Slight Chance T-storms Wednesday High: 89 °F Chance T-storms Wednesday Night Low: 74 °F Slight Chance T-storms Thursday High: 92 °F Mostly Sunny then Chance T-storms Thursday Night Low: 72 °F Showers Friday High: 85 °F Chance Showers then Chance T-storms Friday Night Low: 71 °F Chance T-storms then Showers Likely Saturday High: 83 °F Showers Saturday Night Low: 68 °F Showers

Hazardous Weather Outlook Tonight: A slight chance of showers and thunderstorms between midnight and 1am. Mostly cloudy, with a low around 76. South wind 7 to 14 mph. Chance of precipitation is 20%. Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 89. Southwest wind 8 to 13 mph. Wednesday Night: A 20 percent chance of showers and thunderstorms, mainly between 2am and 3am. Mostly cloudy, with a low around 74. Southwest wind 6 to 9 mph. Thursday: A 50 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 92. Heat index values as high as 101. Southwest wind 6 to 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Thursday Night: Showers and thunderstorms before 5am, then a chance of showers. Low around 72. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. Friday: A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 85. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Cloudy, with a low around 71. Chance of precipitation is 70%. Saturday: Showers and possibly a thunderstorm. High near 83. Chance of precipitation is 80%. Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 68. Chance of precipitation is 80%. Sunday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%. Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Monday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.

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

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