Ontonagon Weather Forecast

    • 58
    • 72

    Rain Showers Likely

    • 57
    • 72

    Slight Chance Rain Showers

    • 54
    • 71

    Partly Sunny

    • 53
    • 69

    Partly Sunny

    • 59
    • 72

    Mostly Cloudy

    • 61
    • 76

    Chance Rain Showers

    • 58
    • 71

    Mostly Sunny

Today 20 Aug Ontonagon

Mostly cloudy with a 50 percent chance of Showers. South Winds 5 to 10 Mph.

Tonight 20 Aug Ontonagon

Mostly cloudy with a chance of Showers. A chance of Thunderstorms in the Evening, then a slight chance of Thunderstorms after midnight. Lows in the upper 50s. Light south Winds. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ontonagon Temperature Statistics

August Temperature

Houghton County Memorial Airport (44.1 miles)

  • Lowest 14 August, 2026

    52 °F

  • Average August

    66.2 °F

  • Highest 6 August, 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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