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Oswego, SC Weather Forecast
Oswego, SC Weather Forecast Date: 1008 AM EDT Fri Oct 02 2026
The area/counties/county of: Sumter, including the city of Sumter.or toggle through each period.
Rest of Today... Mostly sunny. Highs in the lower 90s. Light and variable winds, becoming southwest around 5 mph this afternoon.
Tonight... Partly cloudy. Lows in the lower 70s. Southwest winds around 5 mph.
Saturday... Partly sunny in the morning, then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds around 5 mph. Chance of rain 70%.
Saturday Night... Showers with a chance of thunderstorms. Lows in the upper 60s. East winds around 5 mph in the evening, becoming light and variable. Chance of rain 90%.
Sunday... Showers likely in the morning, then showers with a chance of thunderstorms in the afternoon. Highs in the upper 70s. East winds around 5 mph, becoming north around 5 mph in the afternoon. Chance of rain 90%.
Sunday Night... Showers. Lows in the mid 60s. Chance of rain 90%.
Monday... Mostly cloudy with a 50% chance of showers. Highs in the mid 70s.
Monday Night... Mostly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 40%.
Tuesday... Partly sunny. Highs around 70.
Tuesday Night... Partly cloudy. Lows around 50.
Wednesday... Partly sunny. Highs around 70.
Wednesday Night... Mostly cloudy. Lows in the lower 50s.
POP = Probability of Precipitation
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