Butte County Weather ForecastUnited StatesSDButte County5580Belle FourcheIncreasing Clouds5580Castle RockIncreasing CloudsArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale