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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC Issued by: National Weather Service Charleston, SC Last Update: 8:33 am EDT Aug 1, 2026

This Afternoon High: 90 °F Chance T-storms Tonight Low: 77 °F Chance T-storms Sunday High: 90 °F Showers Likely then T-storms Likely Sunday Night Low: 76 °F T-storms then Showers Monday High: 88 °F Showers Monday Night Low: 76 °F T-storms Likely then Showers Likely Tuesday High: 90 °F Showers Likely Tuesday Night Low: 78 °F Chance Showers then Chance T-storms Wednesday High: 90 °F Chance T-storms

This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 90. Heat index values as high as 102. Southeast wind around 11 mph. Tonight: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. South wind 5 to 9 mph becoming light after midnight. Sunday: Showers and thunderstorms likely, mainly after 3pm. Partly sunny, with a high near 90. Heat index values as high as 103. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Sunday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Low around 76. Southwest wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Monday: Showers and possibly a thunderstorm. High near 88. Southwest wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. Monday Night: Showers and thunderstorms likely before 11pm, then showers likely and possibly a thunderstorm after 11pm. Mostly cloudy, with a low around 76. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Tuesday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%. Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 78. Wednesday: A 50 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 90. Wednesday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 78. Chance of precipitation is 20%. Thursday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Thursday Night: Partly cloudy, with a low around 78. Friday: A 30 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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