Check beach status by clicking here. Hours CLOSED FOR THE SEASON. Weather Check Weather Coordinates 40.004722, -91.522084 Park HoursPark Grounds: 7 a.m. to 10 p.m., daily, year-roundThe park gate opens and closes at these times. Day-use areas close at sunset.Park Office hoursSummer Hours (On-Season) April 15 through Oct. 31 7:30 a.m. to 10 p.m., daily Winter Hours (Off-Season)Nov. 1 through April 14Staff are usually available in the park Monday through Friday. The office telephone is monitored for messages during daytime hours. Beach hoursCLOSED FOR THE SEASON.