Mackinac Island Weather Forecast

    • 19
    • 36

    Mostly Cloudy

    • 23
    • 30

    Mostly Cloudy

    • 23
    • 30

    Wintry Mix Likely

    • 25
    • 29

    Chance Snow

    • 24
    • 34

    Snow Likely

    • 15
    • 29

    Chance Snow

Today 23 Dec Mackinac Island/Bois Blanc Island

Mostly cloudy. Highs in the mid 30s. Southwest Winds 5 to 10 Mph increasing to west 15 to 20 Mph in the afternoon. Gusts up to 30 Mph.

Tonight 23 Dec Mackinac Island/Bois Blanc Island

Mostly cloudy. Colder. Lows around 20. Northwest Winds 10 to 20 Mph with Gusts to around 35 Mph shifting to the north 5 to 10 Mph with Gusts to around 20 Mph after midnight.

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Mackinac Island Temperature Statistics

December Temperature

Mackinac Island Airport (0 miles)

  • Lowest 14 December, 2025

    3.2 °F

  • Average December

    23.5 °F

  • Highest 18 December, 2025

    44.6 °F

Climate (2020–Present)

Mackinac Island Airport (0 miles)

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  • Average Low 2020–2025

    38.5 °F

  • Average 2020–2025

    44.9 °F

  • Average High 2020–2025

    51.2 °F
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