For information on how to reserve this shelter, click here. Park Hours Park Hours Weather Check Weather Coordinates 39.018022, -90.919346 Park HoursDay-use Areas 6 a.m. to sunset, daily, year-round Beach hoursBeach closed for the season Visitor Center hoursVisitor Center/Park Office Hours Summer Hours (On-Season) April 15 through Oct. 31 8 a.m. - 4 p.m., Monday-Friday 10 a.m. - 4 p.m., Saturday 11 a.m. - 4 p.m., Sunday Winter Hours (Off-Season) Nov. 1 through April 14 8 a.m. - 4 p.m. Monday-Friday Closed Saturday and Sunday