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

Weather Alerts

Issued by the National Weather Service, last updated at 5:05 PM on October 18, 2026

- Beaufort; Coastal Colleton; Charleston; Coastal Jasper
- 8:00 PM on October 19, 2026
- * WHAT...Dangerous rip currents. * WHERE...South Carolina Beaches. * WHEN...Through Monday evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water.
- Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.
- Inland Berkeley
- 8:00 PM on October 18, 2026
- * WHAT...Northeast winds 15 to 20 knots with gusts up to 25 knots on Lake Moultrie. * WHERE...Lake Moultrie. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Strong winds and rough waves on Lake Moultrie will create hazardous conditions for small craft.
- Boaters on Lake Moultrie should use extra caution since strong winds and rough waves can overturn small craft.

Forecast for Charleston updated at 2:27 PM on October 18, 2026

This Afternoon Sunny. Highs in the mid 60s. North winds 15 to 20 mph with gusts up to 30 mph.
Tonight Mostly clear. Lows around 50. North winds 10 to 15 mph with gusts up to 30 mph.
Monday Sunny. Highs in the upper 60s. North winds 10 to 15 mph with gusts up to 25 mph.
Monday Night Clear. Lows in the lower 50s. North winds 5 to 10 mph with gusts up to 20 mph.
Tuesday Sunny. Highs in the mid 70s. North winds 10 to 15 mph.
Tuesday Night Mostly clear. Lows in the lower 50s.
Wednesday Sunny. Highs in the lower 70s.
Wednesday Night Mostly clear. Lows in the lower 50s.
Thursday Sunny. Highs in the lower 70s.
Thursday Night Mostly clear. Lows in the lower 50s.
Friday Sunny. Highs in the lower 70s.
Friday Night Clear. Lows in the lower 50s.
Saturday Sunny, breezy with highs in the lower 70s.