Harsens Island Weather Forecast

    • 57
    • 76

    Rain Showers

    • 54
    • 74

    Chance Rain Showers

    • 55
    • 76

    Mostly Sunny

    • 59
    • 77

    Chance Thunderstorms

    • 58
    • 77

    Chance Rain Showers

    • 59
    • 79

    Chance Rain Showers

Today 21 Jun St. Clair

Partly cloudy in the Morning, then becoming cloudy. Highs in the mid 70s. Northwest Winds up to 5 Mph, becoming east in the late afternoon.

Tonight 21 Jun St. Clair

Cloudy. A chance of Showers in the Evening, then Showers likely after midnight. Lows in the mid 50s. East Winds up to 5 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harsens Island Temperature Statistics

June Temperature

Selfridge Air National Guard Base (13.7 miles)

  • Lowest 2 June, 2026

    48.7 °F

  • Average June

    70.4 °F

  • Highest 11 June, 2026

    88.3 °F

Climate (2021–2026)

Selfridge Air National Guard Base (13.7 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.1 °F
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