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Humidity 72%

last updated at 1:56 PM on July 25, 2026

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The latest forecast and discussion for the Charleston, SC metro area

Weekend forecast: Mostly unsettled, especially Saturday

Jared Smith / July 24, 2026 at 11:06 PM

A stalled front will continue to contribute to shower and thunderstorm chances through the weekend, particularly on Saturday as a trough aloft swings through, providing a little extra “oomph” to budding updrafts aspiring to be efficient rain-makers.

Charleston Area NWS Forecast

Forecast for Charleston updated at 5:37 AM on July 25, 2026

Today Partly sunny. A slight chance of showers and thunderstorms this morning, then showers with thunderstorms likely this afternoon. Highs in the upper 80s. Heat index values up to 108. Southwest winds 5 to 10 mph. Chance of rain 90 percent.
Tonight Mostly cloudy in the evening, then becoming partly cloudy. A chance of thunderstorms. Showers likely, mainly in the evening. Lows in the mid 70s. Southwest winds around 5 mph, becoming west after midnight. Chance of rain 70 percent.
Sunday Partly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. North winds around 5 mph, becoming east in the afternoon. Chance of rain 50 percent.
Sunday Night Mostly cloudy in the evening, then clearing. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the mid 70s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 50 percent.
Monday Mostly sunny. Highs in the lower 90s. Northeast winds around 5 mph, becoming southeast in the afternoon.
Monday Night Partly cloudy. Lows in the upper 70s.
Tuesday Sunny. Highs in the mid 90s. Heat index values up to 110.
Tuesday Night Partly cloudy with a slight chance of showers and thunderstorms. Lows around 80. Chance of rain 20 percent. Heat index values up to 105 early in the evening.
Wednesday Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 50 percent. Heat index values up to 110.
Wednesday Night Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 50 percent. Heat index values up to 105 early in the evening.
Thursday Sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105.
Thursday Night Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 30 percent.
Friday Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 40 percent.

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