Butte County Weather ForecastUnited StatesSDButte County3761Belle FourcheIncreasing Clouds3658Castle RockIncreasing CloudsArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale