Butte County UV ForecastUnited StatesSDButte CountyLow2.3Belle FourcheLow UV, 2.3Low2.4Castle RockLow UV, 2.4ArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale