Jackson Lake Weather Forecast

    • 59
    • 85

    Increasing Clouds

    • 56
    • 82

    Partly Sunny

    • 58
    • 81

    Chance Rain Showers

    • 60
    • 80

    Rain Showers Likely

    • 58
    • 76

    Chance Thunderstorms

    • 56
    • 75

    Chance Rain Showers

Today 18 Sep Allegan

Sunny. Highs in the mid 80s. Northwest Winds around 10 Mph.

Tonight 18 Sep Allegan

Mostly clear. Patchy fog after midnight. Lows in the upper 50s. Light Winds.

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  • Temperature Real-Time

Jackson Lake Temperature Statistics

September Temperature

Grand Rapids, Gerald R. Ford International Airport (14.9 miles)

  • Lowest 8 September, 2025

    39.9 °F

  • Average September

    62.2 °F

  • Highest 14 September, 2025

    82.9 °F

Climate (2020–Present)

Grand Rapids, Gerald R. Ford International Airport (14.9 miles)

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  • Average Low 2020–2025

    42.1 °F

  • Average 2020–2025

    50.8 °F

  • Average High 2020–2025

    59.6 °F
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