Barnwell County UV ForecastUnited StatesSCBarnwell CountyVery high8.4BarnwellVery high UV, 8.4Very high8.6WillistonVery high UV, 8.6Very high8.6BlackvilleVery high UV, 8.6BarnwellBarnwell Regional AirportBarnwell State ParkBlackvilleElkoHildaKlinePar PondSnellingWilliston