Ontonagon Township Park Weather Forecast

    • 54
    • 65

    Slight Chance Thunderstorms

    • 56
    • 66

    Chance Thunderstorms

    • 59
    • 69

    Rain Showers Likely

    • 57
    • 68

    Rain Showers Likely

    • 55
    • 67

    Slight Chance Thunderstorms

    • 54
    • 67

    Partly Sunny

    • 53
    • 67

    Partly Sunny

Today 18 Sep Ontonagon

Mostly cloudy with a 20 percent chance of Showers. East Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 18 Sep Ontonagon

Cloudy with a slight chance of Showers and Thunderstorms. Lows in the lower 50s. East Winds 5 to 10 Mph. Chance of rain 20 percent.

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Ontonagon Township Park Temperature Statistics

September Temperature

Houghton County Memorial Airport (43.5 miles)

  • Lowest 8 September, 2025

    42.1 °F

  • Average September

    59.2 °F

  • Highest 16 September, 2025

    84 °F

Climate (2020–Present)

Houghton County Memorial Airport (43.5 miles)

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  • Average Low 2020–2025

    35.9 °F

  • Average 2020–2025

    44.1 °F

  • Average High 2020–2025

    52.1 °F
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