| NWS Forecast for: Sumter County Issued by: National Weather Service Columbia, SC Last Update: 208 PM EDT Fri Aug 14 2026 |  |
This Afternoon: Mostly sunny. Near steady temperature in the upper 90s. West winds around 5 mph. Heat index values up to 109. Tonight: Partly cloudy. Humid with lows in the upper 70s. Southwest winds around 5 mph. Saturday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. West winds around 5 mph. Chance of rain 40 percent. Heat index values up to 109. Saturday Night: Mostly cloudy with a chance of thunderstorms. A chance of showers. Humid with lows in the upper 70s. Northwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 40 percent. Sunday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 90s. North winds around 5 mph, becoming southwest in the afternoon. Chance of rain 30 percent. Heat index values up to 110. Sunday Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 70s. Chance of rain 30 percent. Monday: Sunny. Highs in the upper 90s. Heat index values up to 110. Monday Night: Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. 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 and thunderstorms. Lows in the mid 70s. Chance of rain 40 percent. Wednesday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 40 percent. Wednesday Night: Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the mid 70s. Chance of rain 40 percent. Thursday: Mostly sunny. Highs in the upper 90s. | |
| Zone Forecast: Sumter County | |
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