Harsens Island Weather Forecast

    • 16
    • 21

    Mostly Cloudy

    • 28
    • 34

    Mostly Cloudy

    • 28
    • 40

    Mostly Cloudy

    • 21
    • 45

    Rain

    • 20
    • 29

    Mostly Cloudy

    • 25
    • 40

    Chance Rain

    • 22
    • 34

    Mostly Cloudy

Today 15 Dec St. Clair

Partly cloudy. A slight chance of snow Showers early in the afternoon. Near steady temperature around 18. Southwest Winds 10 to 15 Mph with Gusts up to 35 Mph. Chance of snow 20 percent.

Tonight 15 Dec St. Clair

Partly cloudy. Near steady temperature around 14. Southwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Harsens Island Temperature Statistics

December Temperature

Selfridge Air National Guard Base (13.7 miles)

  • Lowest 5 December, 2025

    9.7 °F

  • Average December

    25.7 °F

  • Highest 10 December, 2025

    35.8 °F

Climate (2020–Present)

Selfridge Air National Guard Base (13.7 miles)

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  • Average Low 2020–2025

    42.7 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    59.2 °F
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