Custer County RainfallUnited StatesSDCuster County55%Custer 55% Chance 55%Hermosa 55% Chance 65%Fairburn 65% Chance 55%Dewey 55% Chance 80%Buffalo Gap 80% 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