Facility Hours

Prairie State Park

2025-2026 State Holidays

On the following days (actual or observed), staff will not be available and park buildings will be closed: Thanksgiving Day; Nov. 28, 2025; Christmas Eve; Christmas Day; New Year’s Eve; New Year’s Day; Martin Luther King Jr. Day; Lincoln’s Birthday; and Washington's Birthday.

Know Before You Go: Park and Site Status Map

For temporary closures related to weather, stewardship activities and maintenance, as well as temporary trail closures, please visit our Park and Site Status Map.

Park Grounds

Sunrise to sunset, year-round.

Regal Tallgrass Prairie Nature Center

April through October (on-season)

10 a.m. to 4 p.m., Wednesday through Saturday

Closed Sunday through Tuesday and holidays

November through March (off-season)

10 a.m. to 4 p.m., Thursday through Saturday

Closed Sunday through Wednesday and holidays