Forecast for Charleston updated at 7:13 AM on July 13, 2025
TodayMostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the lower 90s. Heat index values up to 105. Northwest winds around 5 mph, becoming south this afternoon. Chance of rain 40 percent.
TonightPartly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent.
MondayMostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Heat index values up to 105. East winds 5 to 10 mph. Chance of rain 50 percent.
Monday NightPartly cloudy. A chance of showers and thunderstorms in the evening. Lows in the mid 70s. Southeast winds 5 to 10 mph. Chance of rain 50 percent.
TuesdayPartly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Southeast winds 5 to 10 mph. Chance of rain 50 percent.
Tuesday NightMostly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 20 percent.
WednesdayShowers likely with a chance of thunderstorms. Highs in the upper 80s. Chance of rain 70 percent.
Wednesday NightPartly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 20 percent.
ThursdayPartly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
Thursday NightPartly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 20 percent.
FridayPartly sunny with a chance of showers and thunderstorms. Highs around 90. Chance of rain 50 percent. Heat index values up to 105.
Friday NightMostly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 20 percent.
SaturdayPartly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 50 percent. Heat index values up to 105.