Charleston residents will enjoy clear skies and warm sunshine Friday, but conditions take a turn as storms threaten late this weekend. The National Weather Service warns of scattered thunderstorms beginning Sunday afternoon, with the heaviest rain and possible lightning hitting Charleston County by evening. Drivers on I-26 and U.S. 17 should prepare for slick pavement and reduced visibility during peak travel hours.
According to the National Weather Service in Charleston, southeast winds shift by Friday afternoon, bringing highs near 87 degrees before clouds increase Saturday night. Rain chances grow to 40 percent by Sunday night, with storms continuing into Monday. The wet weather may cause localized flooding in low-lying areas across downtown Charleston and Mount Pleasant.
Sunny skies dominate Saturday, making it the best day for outdoor events. Still, residents are urged to stay alert for quick changes, especially along the coast where pop-up showers may form. By Monday, temperatures cool slightly, but rain lingers, keeping roads damp for the morning commute.
To stay safe, residents should avoid driving through flooded intersections and keep phones charged in case of power outages. Boaters and beachgoers should monitor marine advisories closely, as afternoon storms may form quickly over coastal waters.
Thunderstorm chances hold through early next week, but gradual clearing is expected by midweek, offering a return to more typical September weather.
Five Day Forecast for Charleston, SC
- Saturday: High 87, partly cloudy. Low 74.
- Sunday: High 87, 30% chance of storms. Low 71.
- Monday: High 82, 30% chance of storms. Low 69.
- Tuesday: High 80, 40% chance of storms. Low 71.
- Wednesday: High 81, 40% chance of storms. Low 70.
