Charleston SC Fall Weather: Thunderstorms Threaten Commutes Along US-17 Through Monday Night

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Charleston, S.C. – Drivers in Charleston may face slick commutes Monday afternoon as storms threaten to roll into the Lowcountry by early evening. The National Weather Service warns that thunderstorms could disrupt travel on U.S. Highway 17, with strong wind gusts creating hazardous conditions for high-profile vehicles. Residents should plan ahead, secure outdoor items, and limit unnecessary travel if storms develop.

According to the National Weather Service, storms may begin after 2 p.m. Monday, bringing a 20 percent chance of rain and gusts up to 25 mph. Showers may linger into the overnight hours, keeping skies unsettled until early Tuesday morning. Despite the storm risk, temperatures will remain near 81 degrees, with humid air fueling the instability.

Charleston-area residents should monitor local alerts and be prepared for sudden downpours or lightning during evening activities. Beaches and open areas along Folly Road and James Island could see the strongest gusts if storms intensify. Power outages are possible if winds bring down tree limbs or lines.

Conditions improve Tuesday as skies turn mostly sunny with highs near 79 degrees. Northerly winds will gradually calm through midweek, making outdoor plans safer after Monday’s storm risk passes. By Wednesday and Thursday, the region returns to typical early fall warmth with highs in the low 80s.

The next round of unsettled weather may arrive late Friday into Saturday, with another chance of storms developing. Until then, Charleston residents can expect a mix of sunshine and mild fall breezes.

Five Day Forecast for Charleston, SC

  • Monday: Mostly sunny, storms possible after 2 p.m., high near 81.
  • Tuesday: Mostly sunny, high 79, calm north winds.
  • Wednesday: Mostly sunny, high 82.
  • Thursday: Mostly sunny, high 83.
  • Friday: Mostly sunny, high 83, storms possible late.