Butte County UV ForecastUnited StatesSDButte CountyModerate5.3Belle FourcheModerate UV, 5.3Moderate4.2Castle RockModerate UV, 4.2ArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale