Harsens Island Weather Forecast

    • 38
    • 53

    Partly Sunny

    • 36
    • 53

    Slight Chance Rain

    • 40
    • 55

    Chance Rain Showers

    • 38
    • 55

    Chance Rain

    • 41
    • 56

    Partly Sunny

    • 38
    • 58

    Chance Rain

Today 31 Oct St. Clair

Partly cloudy. Highs in the lower 50s. Northwest Winds 10 to 20 Mph with Gusts up to 30 Mph.

Tonight 31 Oct St. Clair

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 30s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harsens Island Temperature Statistics

October Temperature

Selfridge Air National Guard Base (13.7 miles)

  • Lowest 26 October, 2025

    34 °F

  • Average October

    55.9 °F

  • Highest 4 October, 2025

    86 °F

Climate (2020–Present)

Selfridge Air National Guard Base (13.7 miles)

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  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    51.2 °F

  • Average High 2020–2025

    59.4 °F
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