Barnwell County, SC 7-Day Weather Forecast
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Barnwell County Weather Forecast


Barnwell County, SC Weather Forecast Date: 707 AM EDT Tue Sep 22 2026
Weather forecast for Barnwell County, SC
| Today Hi: 90°FHi: 32°C Lo: 70°F Lo: 21°C |
Today... Mostly sunny. Patchy fog this morning. A chance of showers and thunderstorms this afternoon. Highs around 90. Northeast winds around 5 mph. Chance of rain 40%. |
| Wed Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Wednesday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph. |
| Thu Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Thursday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph with gusts up to 20 mph. |
| Fri Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Friday... Sunny. Highs in the upper 70s. |
| Sat Hi: 81°FHi: 27°C Lo: 55°F Lo: 13°C |
Saturday... Sunny. Highs in the lower 80s. |
| Sun Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Sunday... Sunny. Highs in the lower 80s. |
| Mon Hi: 85°FHi: 29°C |
Monday... Mostly sunny. Highs in the mid 80s. |
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