Operating Hours & Seasons
Exploring the Surface
The park is open all day, every day for you to explore. Park roads are generally open year round. However, snow and severe weather can limit access to some remote parts of the park, especially in winter. For current road and trail conditions call the visitor center at 605.745.4600. For travel conditions outside the park, check out the South Dakota road report.
Exploring the Cave
The visitor center is open and cave tours are offered daily except for Thanksgiving, Christmas, and New Year's Days. All tours begin and end at the visitor center. Follow these links for visitor center hours and the current cave tour schedule. Tour schedules are subject to change. Call 605.745.4600 to confirm tour times.
The park receives about 18" of rain annually, most falling in the spring. Summers are generally hot and dry, though thunderstorms, some producing large hail, are fairly common. Fall provides warm, dry days and cool evenings. Winter storms frequently bring snow, occasionally closing park roads temporarily.
The temperature inside the cave remains 54 degrees F (11 degrees C) year round.