Custer County RainfallUnited StatesSDCuster County60%Custer 60% Chance 50%Hermosa 50% Chance 55%Fairburn 55% Chance 40%Dewey 40% Chance 60%Buffalo Gap 60% 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