Isle Royale National Park is open every year from April 16 through October 31. The island is closed from November 1 through April 15 due to extreme winter weather conditions and for the safety and protection of visitors. This closure extends 4.5 miles out into Lake Superior from the island.
[{"park_closures": "November 1 through April 15", "seasonal_closing": "yes", "months_closed": "n/a"}]
[{"park_closures": "November 1 through April 15", "seasonal_closing": "yes", "months_closed": "n/a"}] [{"park_closures": "Isle Royale National Park", "seasonal_closing": "yes", "months_closed": "November 1 through April 15 "}] [{"park_closures": "November 1 through April 15 ", "seasonal_closing": "yes", "months_closed": "n/a"}]