Mackinac Island Weather Forecast

    • 56
    • 67

    Partly Sunny

    • 58
    • 74

    Partly Sunny

    • 55
    • 71

    Partly Sunny

    • 54
    • 64

    Partly Sunny

    • 56
    • 65

    Chance Rain Showers

    • 59
    • 68

    Chance Rain Showers

Today 16 Sep Mackinac Island/Bois Blanc Island

Partly sunny. Highs in the upper 60s. East Winds up to 10 Mph.

Tonight 16 Sep Mackinac Island/Bois Blanc Island

Partly cloudy. Lows in the mid 50s. Light Winds.

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Mackinac Island Temperature Statistics

September Temperature

Mackinac Island Airport (0 miles)

  • Lowest 8 September, 2025

    42.8 °F

  • Average September

    58.8 °F

  • Highest 1 September, 2025

    73.4 °F

Climate (2020–Present)

Mackinac Island Airport (0 miles)

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  • Average Low 2020–2025

    38.4 °F

  • Average 2020–2025

    44.8 °F

  • Average High 2020–2025

    51.2 °F
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