Great Lakes Shipwreck Museum & Whitefish Point Light Station

Mackinac Island Weather

Summer in Mackinac Island

Even in summer, temperatures in this region are moderate. Mornings are generally cool, with warmer afternoons, so a sweater or light jacket that you can put on and take off easily is a must. Summer highs typically average 75 degrees, with lows around 48 degrees. Average monthly precipitation is about 2.6 inches.

Spring & Autumn in Mackinac Island

Average spring temperatures range between 32 degrees and 47 degrees, necessitating a jacket at the least. Average monthly precipitation is around 2 inches. Autumn brings slightly warmer average temperatures between 47 degrees and 60 degrees and average monthly precipitation of about 3 inches. Layered clothing is still a good idea to weather the temperature swings.

Winter in Mackinac Island

Winters on Mackinac Island can get downright cold, and February brings lots of snow and ice to the Straits and Lake Huron. Average monthly precipitation in winter is about 1.7 inches, and daily temperatures average between 9 degrees and 26 degrees. Heavy, warm winter clothing is a necessity this time of year.

Your best bet is to check out the weather before you head out so you can plan for what's ahead. For the latest Mackinac Island weather, check out our area weather page.

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