Porcupine Mountains State Park Weather Forecast

    • 55
    • 72

    Partly Sunny

    • 60
    • 76

    Chance Rain Showers

    • 55
    • 70

    Chance Rain Showers

    • 56
    • 71

    Mostly Sunny

    • 62
    • 78

    Partly Sunny

    • 61
    • 79

    Partly Sunny

Today 16 Aug Ontonagon

Cloudy. A slight chance of Showers in the morning. Highs in the mid 70s. Northwest Winds 5 to 15 Mph. Chance of rain 20 percent.

Tonight 16 Aug Ontonagon

Mostly clear. Lows 51 to 56. West Winds 5 to 10 Mph.

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Porcupine Mountains State Park Temperature Statistics

August Temperature

Ironwood, Gogebic-Iron County Airport (26.1 miles)

  • Lowest 5 August, 2026

    46 °F

  • Average August

    66.1 °F

  • Highest 3 August, 2026

    84 °F

Climate (2021–2026)

Ironwood, Gogebic-Iron County Airport (26.1 miles)

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  • Average Low 2021–2026

    32.8 °F

  • Average 2021–2026

    42.7 °F

  • Average High 2021–2026

    51.4 °F
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