Harsens Island Weather Forecast

    • 40
    • 48

    Mostly Cloudy

    • 32
    • 51

    Chance Rain

    • 27
    • 40

    Partly Sunny

    • 32
    • 45

    Mostly Cloudy

    • 33
    • 43

    Mostly Cloudy

    • 31
    • 58

    Chance Rain

Today 21 Mar St. Clair

Mostly cloudy. Highs in the mid 40s. East Winds up to 5 Mph, becoming south in the afternoon.

Tonight 21 Mar St. Clair

Mostly cloudy. Near steady temperature in the lower 40s. Southwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harsens Island Temperature Statistics

March Temperature

Selfridge Air National Guard Base (13.7 miles)

  • Lowest 2 March, 2026

    15.6 °F

  • Average March

    39.4 °F

  • Highest 9 March, 2026

    71.6 °F

Climate (2021–Present)

Selfridge Air National Guard Base (13.7 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.2 °F
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