St Ignace Weather Forecast

    • 45
    • 57

    Chance Rain Showers

    • 46
    • 59

    Chance Rain Showers

    • 53
    • 67

    Chance Rain Showers

    • 55
    • 69

    Chance Rain Showers

    • 49
    • 71

    Partly Sunny

    • 48
    • 65

    Mostly Sunny

    • 50
    • 65

    Partly Sunny

Today 6 Sep Eastern Mackinac

Mostly cloudy with a 20 percent chance of light rain Showers. Highs in the mid 50s. West Winds 5 to 15 Mph with Gusts to around 25 Mph.

Tonight 6 Sep Eastern Mackinac

Partly cloudy with a 20 percent chance of rain Showers. Lows in the lower 40s. West Winds up to 10 Mph.

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St Ignace Temperature Statistics

September Temperature

Mackinac Island Airport (4.3 miles)

  • Lowest 3 September, 2025

    46.4 °F

  • Average September

    60 °F

  • Highest 1 September, 2025

    73.4 °F

Climate (2020–Present)

Mackinac Island Airport (4.3 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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