| NWS Forecast for: Sumter 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. South winds around 5 mph. Chance of rain 50 percent. Monday: Sunny, hot with highs around 100. West winds around 5 mph. Heat index values up to 110. Monday Night: Mostly clear. Lows in the upper 70s. West winds around 5 mph. Heat index values up to 108 early in the evening. Tuesday: Sunny. Highs in the upper 90s. Northwest winds around 5 mph. Heat index values up to 109. 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: Sunny. Highs in the upper 90s. Thursday Night: Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 30 percent. Friday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 50 percent. Friday Night: Showers likely with a chance of thunderstorms. Lows in the lower 70s. Chance of rain 60 percent. Saturday: Partly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 60 percent. Saturday Night: Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the evening. Lows in the lower 70s. Chance of rain 60 percent. Sunday: Mostly sunny. Highs in the lower 90s. | |
| Zone Forecast: Sumter County | |
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