County Line Lake Weather Forecast

    • 54
    • 81

    Increasing Clouds

    • 49
    • 69

    Mostly Cloudy

    • 53
    • 68

    Mostly Cloudy

    • 56
    • 70

    Chance Rain Showers

    • 56
    • 72

    Chance Rain Showers

    • 51
    • 71

    Chance Rain Showers

Today 17 Sep Ontonagon

A slight chance of Showers and Thunderstorms in the afternoon. Sunny. Highs around 78 inland to around 68 at the shore. Temperature falling into the lower 70s in the afternoon. West Winds 5 to 10 Mph, becoming north in the afternoon. Chance of rain 20 percent.

Tonight 17 Sep Ontonagon

Mostly clear with a slight chance of Showers and Thunderstorms. Lows in the lower 60s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

County Line Lake Temperature Statistics

September Temperature

Land O' Lakes, Kings Land O' Lakes Airport (12.4 miles)

  • Lowest 8 September, 2025

    37 °F

  • Average September

    55.4 °F

  • Highest 13 September, 2025

    79.9 °F

Climate (2020–Present)

Land O' Lakes, Kings Land O' Lakes Airport (12.4 miles)

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  • Average Low 2020–2025

    30.6 °F

  • Average 2020–2025

    42.4 °F

  • Average High 2020–2025

    52.5 °F
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