Dramatic eroded buttes and spires rise above a sea of mixed-grass prairie in the heart of South Dakota.
May–June and September: moderate temperatures, green prairie, and wildlife active at dawn and dusk.
July–August is busiest, and traffic spikes around the early-August Sturgis rally. Winter is nearly empty.
Summer storms bring hail, lightning and flash floods, and highs can pass 100°F. Winters are bitterly cold and windy with blizzards.
General patterns — conditions vary by year. Check current NPS alerts and road status before you go.
Distances are rough estimates to the closest entrance. Check road and ferry conditions before you go.
Campgrounds inside the park are booked through Recreation.gov, and many fill months ahead.
FIND CAMPSITES ON RECREATION.GOV ↗