Isle Royale National Park

• Michigan State Parks
• Isle Royale National Park
• Vacation Rentals
• Cabin Rentals
• River Rafting

Weather

Lake Superior weather is cool throughout the operating season. Dense fog in spring, sunny with temperatures rarely exceeding 80 degrees Fahrenheit. Thunderstorms and rain occur throughout the season. Weather and rough seas may delay departures to and from the island. Bring plenty of warm clothing, even in August. A jacket is a must for the ferry trip to the island or if boating around the island.

http://www.nps.gov/isro/climtabl.htm

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