Ontonagon Weather Forecast

    • 65
    • 82

    Mostly Sunny

    • 58
    • 79

    Rain Showers

    • 59
    • 76

    Slight Chance Thunderstorms

    • 58
    • 74

    Partly Sunny

    • 57
    • 70

    Slight Chance Rain Showers

    • 58
    • 71

    Partly Sunny

    • 57
    • 70

    Mostly Sunny

Today 6 Aug Ontonagon

Sunny. Southwest Winds 5 to 10 Mph.

Tonight 6 Aug Ontonagon

Clear. Lows in the lower 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Ontonagon Temperature Statistics

August Temperature

Houghton County Memorial Airport (44.1 miles)

  • Lowest 4 August, 2026

    55.9 °F

  • Average August

    70 °F

  • Highest 3 August, 2026

    81 °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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