Island Lake Weather Forecast

    • 58
    • 87

    Chance Thunderstorms

    • 51
    • 75

    Partly Sunny

    • 54
    • 70

    Partly Sunny

    • 56
    • 70

    Chance Thunderstorms

    • 58
    • 75

    Chance Rain Showers

    • 54
    • 75

    Chance Rain Showers

Today 17 Sep Northern Marinette County

Humid. Partly sunny. Patchy fog in the morning. A chance of Sprinkles in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the middle 80s. Light and variable wind. Chance of rain 40 percent.

Tonight 17 Sep Northern Marinette County

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the upper 50s. Light and variable wind. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Lake Temperature Statistics

September Temperature

Menominee - Marinette Twin County Airport (24.9 miles)

  • Lowest 4 September, 2025

    41 °F

  • Average September

    59.5 °F

  • Highest 1 September, 2025

    77 °F

Climate (2020–Present)

Menominee - Marinette Twin County Airport (24.9 miles)

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  • Average Low 2020–2025

    37.8 °F

  • Average 2020–2025

    46.5 °F

  • Average High 2020–2025

    54.6 °F
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