Ontonagon County Park Weather Forecast

    • 47
    • 70

    Increasing Clouds

    • 48
    • 65

    Chance Rain Showers

    • 48
    • 66

    Mostly Cloudy

    • 42
    • 64

    Mostly Cloudy

    • 39
    • 63

    Partly Sunny

    • 42
    • 65

    Partly Sunny

    • 47
    • 67

    Partly Sunny

Today 17 Sep Ontonagon

Partly cloudy. Highs around 70.

Tonight 17 Sep Ontonagon

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog. Lows in the upper 40s. Light north Winds, becoming east after midnight.

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Ontonagon County Park Temperature Statistics

September Temperature

Ironwood, Gogebic-Iron County Airport (24.2 miles)

  • Lowest 14 September, 2026

    32 °F

  • Average September

    64.7 °F

  • Highest 1 September, 2026

    86 °F

Climate (2021–2026)

Ironwood, Gogebic-Iron County Airport (24.2 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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