Charleston Area NWS Forecast
Forecast for Charleston updated at 2:12 AM on September 20, 2026
- Rest Of Tonight Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Northeast winds around 5 mph. Chance of rain 20 percent.
- Sunday Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the mid 80s. Northeast winds around 5 mph. Chance of rain 50 percent.
- Sunday Night Partly cloudy. Lows in the lower 70s. East winds around 5 mph in the evening, becoming light and variable.
- Monday Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Northeast winds around 5 mph, becoming east in the afternoon. Chance of rain 20 percent.
- Monday Night Mostly cloudy in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Southeast winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent.
- Tuesday Mostly sunny with a chance of thunderstorms with a slight chance of showers. Highs in the upper 80s. Chance of rain 50 percent.
- Tuesday Night Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent.
- Wednesday Partly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50 percent.
- Wednesday Night Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 20 percent.
- Thursday Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 20 percent.
- Thursday Night Partly cloudy. Lows in the mid 60s.
- Friday Mostly sunny. Highs around 80.
- Friday Night Mostly clear. Lows in the lower 60s.
- Saturday Sunny. Highs in the upper 70s.