Park Hours Park Hours Weather Check Weather Coordinates 40.082706, -95.343233 Park HoursFor temporary closures related to weather, stewardship activities and maintenance, as well as temporary trail closures, click here to visit our Park and Site Status Map. Park Grounds: Sunrise to sunset, year-round. Park Office hours 8 a.m. to 2:30 p.m., Monday through Friday, year-round