Weather in Sumter, SC
Updated 2026-08-11 13:00 local time · ZIP codes 29150, 29153, 29154
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
91°1% rain100°1% rain100°1% rain100°1% rain100°1% rain98°1% rain96°1% rain92°1% rain
89°1% rain87°2% rain86°3% rain84°4% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 4%).
It feels like 96°F with winds near 6 mph.
91°F, 1% rain chance and 6 mph wind.
Visibility is around 10 mi; gusts may reach 19 mph.
Current temperature is 91°F, wind 6 mph, rain chance up to 4%.
UV index is 9. Use shade, sunscreen, a hat and sunglasses.
Sumter weather today
Sunny and 91°F in Sumter, SC. Today's high is 100°F with a 4% rain chance. Winds are around 6 mph with gusts near 7 mph. Relative humidity is 71%, pressure is 30.06 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Sumter
Sunrise is at 06:40 AM and sunset is at 08:12 PM. Tomorrow's forecast calls for Sunny with a high near 102°F and a low near 74°F. The maximum rain chance is 57%.