Custer County RainfallUnited StatesSDCuster County60%Custer 60% Chance 50%Hermosa 50% Chance 50%Fairburn 50% Chance 45%Dewey 45% Chance 45%Buffalo Gap 45% 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