Mackinac State Park Weather Forecast

    • 49
    • 64

    Rain Showers

    • 55
    • 64

    Rain Showers

    • 53
    • 73

    Chance Rain Showers

    • 55
    • 68

    Slight Chance Rain Showers

    • 54
    • 71

    Partly Sunny

    • 55
    • 68

    Chance Rain Showers

Today 13 Sep Mackinac Island/Bois Blanc Island

Partly sunny. Scattered rain Showers in the afternoon. Highs in the lower 60s. Northwest Winds 10 to 20 Mph with Gusts to around 30 Mph. Chance of Showers 40 percent.

Tonight 13 Sep Mackinac Island/Bois Blanc Island

Mostly clear. Isolated rain Showers early. Lows in the upper 40s. Northwest Winds 5 to 20 Mph. Chance of Showers 20 percent.

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Mackinac State Park Temperature Statistics

September Temperature

Mackinac Island Airport (0 miles)

  • Lowest 11 September, 2026

    50 °F

  • Average September

    65.8 °F

  • Highest 1 September, 2026

    78.8 °F

Climate (2021–2026)

Mackinac Island Airport (0 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    50.9 °F
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