Weather in Barnwell, SC
Updated 2026-08-11 11:15 local time · ZIP codes 29812
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
95°3% rain98°2% rain95°3% rain96°3% rain100°1% rain100°1% rain100°1% rain98°1% rain96°1% rain92°2% rain
89°2% rain87°2% 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 3%).
It feels like 109°F with winds near 7 mph.
92°F, 2% rain chance and 11 mph wind.
Visibility is around 6 mi; gusts may reach 19 mph.
Current temperature is 95°F, wind 7 mph, rain chance up to 3%.
UV index is 6. Sunscreen, shade and protective clothing are recommended.
Barnwell weather today
Sunny and 95°F in Barnwell, SC. Today's high is 100°F with a 4% rain chance. Winds are around 7 mph with gusts near 9 mph. Relative humidity is 58%, pressure is 30.09 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Barnwell
Sunrise is at 06:45 AM and sunset is at 08:16 PM. Tomorrow's forecast calls for Sunny with a high near 101°F and a low near 78°F. The maximum rain chance is 36%.