Custer County RainfallUnited StatesSDCuster County100%Custer 100% Chance 100%Hermosa 100% Chance 100%Fairburn 100% Chance 100%Dewey 100% Chance 100%Buffalo Gap 100% 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