Charleston Area NWS Forecast
Forecast for Charleston updated at 2:42 AM on September 6, 2026
- Today Sunny. A chance of showers and thunderstorms this afternoon. Highs in the lower 90s. Heat index values up to 107. Northwest winds around 5 mph, becoming east this afternoon. Chance of rain 50 percent.
- Tonight Showers likely with a chance of thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the lower 70s. East winds around 5 mph. Chance of rain 70 percent.
- Labor Day Mostly cloudy in the morning, then becoming partly sunny. A chance of thunderstorms. A chance of showers in the morning, then showers in the afternoon. Highs in the mid 80s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent.
- Monday Night Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 70s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent.
- Tuesday Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 80s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent.
- Tuesday Night Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the mid 70s. Chance of rain 50 percent.
- Wednesday Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50 percent.
- Wednesday Night Partly cloudy. Lows in the mid 70s.
- Thursday Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 40 percent.
- Thursday Night Partly cloudy. Lows in the mid 70s.
- Friday Mostly sunny with a chance of showers and thunderstorms. Highs around 90. Chance of rain 40 percent.
- Friday Night Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 40 percent.
- Saturday Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.