Ontonagon Weather Forecast

    • 61
    • 76

    Chance Rain Showers

    • 61
    • 77

    Chance Rain Showers

    • 61
    • 77

    Partly Sunny

    • 63
    • 79

    Chance Thunderstorms

    • 62
    • 75

    Rain Showers Likely

    • 63
    • 76

    Chance Rain Showers

    • 59
    • 74

    Partly Sunny

Today 3 Sep Ontonagon

Partly cloudy. East Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 3 Sep Ontonagon

Partly cloudy this Evening, then becoming cloudy. A chance of Thunderstorms. A chance of Showers this Evening, then Showers likely after midnight. Lows around 60. East Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming light southeast after midnight. Chance of rain 70 percent.

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Ontonagon Temperature Statistics

September Temperature

Houghton County Memorial Airport (44.1 miles)

  • Lowest 1 September, 2026

    57 °F

  • Average September

    69.5 °F

  • Highest 1 September, 2026

    82 °F

Climate (2021–2026)

Houghton County Memorial Airport (44.1 miles)

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  • Average Low 2021–2026

    35.8 °F

  • Average 2021–2026

    43.9 °F

  • Average High 2021–2026

    51.9 °F
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