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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 2:30 pm EDT May 22, 2026

Tonight Low: 74 °F Mostly Cloudy Saturday High: 87 °F Partly Sunny then Slight Chance T-storms Saturday Night Low: 73 °F Mostly Cloudy then Slight Chance T-storms Sunday High: 86 °F Showers Likely Sunday Night Low: 74 °F Chance Showers Memorial Day High: 87 °F Chance T-storms Monday Night Low: 73 °F Slight Chance T-storms Tuesday High: 87 °F Chance Showers Tuesday Night Low: 74 °F Mostly Cloudy then Slight Chance Showers

Hazardous Weather Outlook Tonight: Mostly cloudy, with a low around 74. Southeast wind 5 to 10 mph. Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Light southeast wind increasing to 5 to 10 mph in the morning. Saturday Night: A slight chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 5am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 73. South wind 3 to 7 mph. Chance of precipitation is 20%. Sunday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Light south wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Sunday Night: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 74. South wind 6 to 8 mph. Chance of precipitation is 30%. Memorial Day: A 40 percent chance of showers and thunderstorms, mainly between 11am and 2pm. Partly sunny, with a high near 87. Monday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 20%. Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 30%. Tuesday Night: A slight chance of thunderstorms before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 20%. Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 88. Wednesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Thursday: Showers and thunderstorms likely. Mostly cloudy, with a high near 87. Chance of precipitation is 60%. Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%. Friday: Showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.

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

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