South Dakota’s color is concentrated in the Black Hills.
Aspen and birch in the northern hills around Spearfish Canyon turn in the last days of September and the first week of October, with the oak and ash of Custer State Park and the southern hills following through mid-month.
In a typical yearWednesday, Mmmmmmmmm 30 (latest map)
Bordering states
Color: Fallcast, the same map as the app. Basemap © OpenStreetMap contributors, Protomaps. Place outlines: U.S. Census Bureau.