| NWS Forecast for: Barnwell County Issued by: National Weather Service Columbia, SC Last Update: 408 PM EDT Wed Aug 12 2026 | |
| Tonight: Partly cloudy with a slight chance of showers and thunderstorms this evening, then mostly clear after midnight. Lows in the mid 70s. Southwest winds around 5 mph. Chance of rain 20 percent. Thursday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. West winds around 5 mph. Chance of rain 20 percent. Thursday Night: Partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph in the evening, becoming light and variable. Friday: Mostly sunny. Highs in the upper 90s. West winds around 5 mph. Heat index values up to 110. Friday Night: Partly cloudy. Lows in the upper 70s. Southwest winds around 5 mph in the evening, becoming light and variable. Heat index values up to 110 early in the evening. Saturday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 40 percent. Heat index values up to 110. Saturday Night: Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 40 percent. Sunday: Mostly sunny. Highs in the mid 90s. Sunday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Monday: Sunny. Highs in the upper 90s. Monday Night: Mostly clear. Lows in the upper 70s. Tuesday: Sunny. Highs in the upper 90s. Heat index values up to 110. Tuesday Night: Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. Lows in the mid 70s. Chance of rain 40 percent. Wednesday: Mostly sunny. Highs in the upper 90s. | |
| Zone Forecast: Barnwell County | |
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