Barnwell County UV ForecastUnited StatesSCBarnwell CountyVery high10.8BarnwellVery high UV, 10.8Very high9.8WillistonVery high UV, 9.8Very high9.8BlackvilleVery high UV, 9.8BarnwellBarnwell Regional AirportBarnwell State ParkBlackvilleElkoHildaKlinePar PondSnellingWilliston