| NWS Forecast for: Barnwell County Issued by: National Weather Service Columbia, SC Last Update: 308 PM EDT Sun Aug 16 2026 |  |
Tonight: Partly cloudy with a chance of showers and thunderstorms this evening, then mostly clear after midnight. Lows in the mid 70s. Light and variable winds, becoming southwest around 5 mph after midnight. Chance of rain 30 percent. Monday: Patchy fog in the morning. Sunny. Highs in the upper 90s. West winds around 5 mph. Monday Night: Mostly clear. Lows in the upper 70s. West winds around 5 mph. Tuesday: Sunny. Highs in the upper 90s. Northwest winds around 5 mph. Heat index values up to 108. Tuesday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Northwest winds around 5 mph in the evening, becoming light and variable. Wednesday: Sunny. Highs in the mid 90s. Wednesday Night: Mostly clear. Lows in the mid 70s. Thursday: Mostly sunny. Highs in the upper 90s. Thursday Night: Partly cloudy. Lows in the mid 70s. Friday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 50 percent. Friday Night: Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent. Saturday: Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 50 percent. Saturday Night: Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent. Sunday: Mostly sunny. Highs in the lower 90s. | |
| Zone Forecast: Barnwell County | |
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