Custer County RainfallUnited StatesSDCuster County45%Custer 45% Chance 40%Hermosa 40% Chance 40%Fairburn 40% Chance 40%Dewey 40% Chance 40%Buffalo Gap 40% Chance Big Rock ParkBismark LakeBrown FieldBuffalo GapCenter LakeCrazy HorseCusterCuster County AirportCuster State ParkCuster State Park AirportDeweyFairburnHermosaJewel Cave National MonumentLegion LakePringleSanatorStockade LakeSylvan LakeWind Cave National Park