Butte County UV ForecastUnited StatesSDButte CountyModerate4.4Belle FourcheModerate UV, 4.4Moderate5.1Castle RockModerate UV, 5.1ArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale