Butte County Weather ForecastUnited StatesSDButte County4267Belle FourcheMostly Sunny4365Castle RockBreezyArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale