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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 4:47 pm EDT Sep 18, 2026

Tonight Low: 74 °F Partly Cloudy Saturday High: 91 °F Mostly Sunny then Chance T-storms Saturday Night Low: 74 °F Chance T-storms Sunday High: 88 °F Slight Chance T-storms then Chance T-storms Sunday Night Low: 75 °F Chance T-storms then Partly Cloudy Monday High: 88 °F Chance T-storms Monday Night Low: 74 °F Chance T-storms Tuesday High: 86 °F Showers Likely Tuesday Night Low: 72 °F Showers Likely then Chance T-storms

Tonight: Partly cloudy, with a low around 74. South wind 5 to 7 mph becoming calm in the evening. Saturday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 91. Calm wind becoming southeast around 5 mph in the afternoon. Saturday Night: A 30 percent chance of showers and thunderstorms, mainly between 1am and 3am. Partly cloudy, with a low around 74. Light and variable wind. Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 88. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Light and variable wind. Monday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 88. Chance of precipitation is 30%. Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%. Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 60%. Wednesday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 50%. Wednesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Thursday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. Thursday Night: Partly cloudy, with a low around 68. Friday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.

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

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