Charleston Weather - Weather forecasts and discussions for the Charleston, SC Tri-County area

Weather Alerts

Issued by the National Weather Service, last updated at 10:30 AM on May 18, 2025

Flood Warningfor Berkeley, SC; Georgetown, SC; Williamsburg, SC until 10:30 AM on May 19, 2025
Flood Warningfor Charleston, SC; Colleton, SC; Dorchester, SC until 2:00 AM on May 22, 2025

Forecast for Charleston updated at 5:06 PM on May 18, 2025

Tonight Mostly cloudy this evening, then becoming partly cloudy. Lows around 70. Southwest winds 5 to 10 mph.
Monday Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s, except in the mid 80s near the coast. Northwest winds around 5 mph, becoming south in the afternoon. Chance of rain 20 percent.
Monday Night Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 20 percent.
Tuesday Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s, except in the upper 80s near the coast. Southwest winds around 5 mph, increasing to south 10 to 15 mph in the afternoon. Chance of rain 20 percent.
Tuesday Night Partly cloudy. Lows in the mid 70s. Southwest winds 10 to 15 mph.
Wednesday Mostly sunny with a slight chance of showers and thunderstorms. Highs around 90. Chance of rain 20 percent.
Wednesday Night Partly cloudy. Lows in the upper 60s.
Thursday Sunny. Highs in the mid 80s.
Thursday Night Mostly clear. Lows in the lower 60s.
Friday Sunny. Highs around 80.
Friday Night Mostly clear. Lows around 60.
Saturday Sunny. Highs around 80.
Saturday Night Partly cloudy. Lows in the mid 60s.
Sunday Sunny. Highs in the lower 80s.