Ontonagon Weather Forecast

    • 60
    • 71

    Mostly Sunny

    • 61
    • 79

    Rain Showers

    • 51
    • 70

    Partly Sunny

    • 49
    • 64

    Partly Sunny

    • 54
    • 65

    Rain Showers

    • 51
    • 64

    Breezy

    • 53
    • 64

    Slight Chance Rain Showers

Today 10 Sep Ontonagon

Sunny. Light west Winds.

Tonight 10 Sep Ontonagon

Clear. Lows in the upper 50s. Temperature rising into the lower 60s. South Winds 5 to 10 Mph. Gusts up to 25 Mph.

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  • Temperature Real-Time

Ontonagon Temperature Statistics

September Temperature

Houghton County Memorial Airport (44.1 miles)

  • Lowest 3 September, 2026

    51.1 °F

  • Average September

    65.6 °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

    44 °F

  • Average High 2021–2026

    51.9 °F
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