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City of Sumter, SCSumter, SC 7-Day Night Weather Forecast
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Sumter, SC Weather Forecast
Sumter, SC Weather Forecast Date: 1208 AM EDT Wed Sep 09 2026
The area/counties/county of: Sumter, including the city of Sumter.or toggle through each period.
Rest of Tonight... Mostly clear. Lows in the upper 60s. East winds around 5 mph.
Wednesday... Mostly sunny. Highs in the lower 90s. East winds around 5 mph.
Wednesday Night... Partly cloudy in the evening, then becoming mostly clear. Lows around 70. Southeast winds around 5 mph in the evening, becoming light and variable.
Thursday... 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 40%.
Thursday Night... Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 70s. South winds around 5 mph. Chance of rain 40%.
Friday... Sunny in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 50%.
Friday Night... A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the lower 70s. Chance of rain 50%.
Saturday... Partly sunny with a chance of showers in the morning, then mostly cloudy with showers with a chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 80%.
Saturday Night... Mostly cloudy with a chance of thunderstorms. Showers, mainly in the evening. Lows in the lower 70s. Chance of rain 80%.
Sunday... Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 50%.
Sunday Night... Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 70s. Chance of rain 50%.
Monday... Mostly sunny. Highs in the lower 90s.
Monday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 70s.
POP = Probability of Precipitation
Sumter Radar Loop
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