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City of Barnwell, SCBarnwell, SC 7-Day Night Weather Forecast
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Barnwell, SC Weather Forecast
Barnwell, SC Weather Forecast Date: 408 AM EDT Fri Sep 11 2026
The area/counties/county of: Barnwell, including the cities of: Barnwell, Williston, and Blackville.or toggle through each period.
Today... Partly sunny. A chance of showers and thunderstorms this afternoon. Highs in the lower 90s. Light and variable winds, becoming southwest around 5 mph this afternoon. Chance of rain 50%.
Tonight... Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 70s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 20%.
Saturday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Light and variable winds, becoming southwest around 5 mph in the afternoon. Chance of rain 50%.
Saturday Night... Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 50%.
Sunday... Mostly sunny. A chance of showers in the morning. Humid with highs in the lower 90s. West winds around 5 mph. Chance of rain 40%.
Sunday Night... Partly cloudy in the evening, then clearing. Lows in the lower 70s.
Monday... Mostly sunny. Highs in the lower 90s.
Monday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 70s.
Tuesday... Mostly sunny. Highs around 90.
Tuesday Night... Mostly clear. Lows in the upper 60s.
Wednesday... Sunny. Highs in the upper 80s.
Wednesday Night... Mostly clear. Lows in the upper 60s.
POP = Probability of Precipitation
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