Custer County RainfallUnited StatesSDCuster County80%Custer 80% Chance 60%Hermosa 60% Chance 65%Fairburn 65% Chance 65%Dewey 65% Chance 65%Buffalo Gap 65% 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