Ontonagon Weather Forecast

    • 63
    • 74

    Smoke

    • 59
    • 81

    Smoke

    • 59
    • 73

    Partly Sunny

    • 64
    • 78

    Chance Thunderstorms

    • 57
    • 79

    Chance Rain Showers

    • 55
    • 68

    Mostly Sunny

    • 57
    • 71

    Mostly Sunny

Today 16 Jul Ontonagon

Partly cloudy. Smoke. Northeast Winds 5 to 10 Mph.

Tonight 16 Jul Ontonagon

Mostly cloudy. Smoke. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the lower 60s. Light southeast Winds, becoming south 5 to 10 Mph after midnight. Chance of rain 40 percent.

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Ontonagon Temperature Statistics

July Temperature

Houghton County Memorial Airport (44.1 miles)

  • Lowest 6 July, 2026

    46 °F

  • Average July

    70.4 °F

  • Highest 13 July, 2026

    91.9 °F

Climate (2021–2026)

Houghton County Memorial Airport (44.1 miles)

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  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    44 °F

  • Average High 2021–2026

    52 °F
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