Butte County UV ForecastUnited StatesSDButte CountyModerate5Belle FourcheModerate UV, 5Moderate5.5Castle RockModerate UV, 5.5ArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale