Butte County UV ForecastUnited StatesSDButte CountyModerate4.2Belle FourcheModerate UV, 4.2Moderate5.8Castle RockModerate UV, 5.8ArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale