Ontonagon Weather Forecast

    • 51
    • 71

    Rain Showers Likely

    • 51
    • 77

    Mostly Sunny

    • 40
    • 68

    Mostly Sunny

    • 45
    • 63

    Rain Showers

    • 44
    • 70

    Rain Showers

    • 40
    • 60

    Slight Chance Rain Showers

Today 14 May Ontonagon

Sunny. Much warmer with Highs in the mid 70s. South Winds 5 to 10 Mph.

Tonight 14 May Ontonagon

Cloudy with a 50 percent chance of Showers. Lows around 51. South Winds 10 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ontonagon Temperature Statistics

May Temperature

Houghton County Memorial Airport (44.1 miles)

  • Lowest 8 May, 2026

    28 °F

  • Average May

    42.3 °F

  • Highest 3 May, 2026

    57.9 °F

Climate (2021–Present)

Houghton County Memorial Airport (44.1 miles)

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  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    52.1 °F
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