Weather in Sumter, SC
Updated 2026-09-26 08:45 local time · ZIP codes 29150, 29153, 29154
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
55°2% rain67°1% rain72°0% rain76°1% rain79°0% rain81°0% rain82°1% rain83°1% rain82°1% rain81°1% rain
73°2% rain
69°10% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 10%).
It feels like 51°F with winds near 5 mph.
72°F, 0% rain chance and 6 mph wind.
Visibility is around 6 mi; gusts may reach 11 mph.
Current temperature is 55°F, wind 5 mph, rain chance up to 10%.
UV index is 0.
Local weather characteristics in Sumter
South Carolina has hot humid summers and generally mild winters. Coastal areas are exposed to tropical systems, while the northwest is somewhat cooler with elevation.
Sumter is part of the South weather region. The forecast point is near 33.92°N latitude and 80.34°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Sumter weather today
Sunny and 55°F in Sumter, SC. Today's high is 83°F with a 1% rain chance. Winds are around 5 mph with gusts near 8 mph. Relative humidity is 51%, pressure is 30.02 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Sumter
Sunrise is at 07:12 AM and sunset is at 07:13 PM. Tomorrow's forecast calls for Overcast with a high near 85°F and a low near 56°F. The maximum rain chance is 5%.