Charleston Area NWS Forecast
Forecast for Charleston updated at 2:37 PM on May 20, 2026
- Tonight Mostly clear. Lows around 70. South winds 5 to 10 mph.
- Thursday Sunny. Highs around 90, except in the mid 80s near the coast. South winds 5 to 10 mph.
- Thursday Night Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 20 percent.
- Friday Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.
- Friday Night Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 70s. Southeast winds 5 to 10 mph. Chance of rain 40 percent.
- Saturday Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
- Saturday Night Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 20 percent.
- Sunday Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
- Sunday Night Mostly cloudy with a 20 percent chance of showers. Lows in the mid 70s.
- Memorial Day Mostly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
- Monday Night Partly cloudy. Lows in the lower 70s.
- Tuesday Partly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
- Tuesday Night Mostly cloudy. Lows in the lower 70s.
- Wednesday Partly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.