O'Brien Lake Weather Forecast

    • 60
    • 81

    Partly Sunny

    • 56
    • 79

    Chance Thunderstorms

    • 53
    • 69

    Chance Thunderstorms

    • 49
    • 68

    Chance Rain Showers

    • 53
    • 67

    Chance Rain Showers

    • 52
    • 67

    Chance Rain Showers

Today 16 Sep Iron

Mostly sunny. Hot with Highs in the lower 80s. South Winds 5 to 10 Mph.

Tonight 16 Sep Iron

Partly cloudy. A slight chance of Showers and Thunderstorms after midnight. Humid with Lows around 60. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

O'Brien Lake Temperature Statistics

September Temperature

Ironwood, Gogebic-Iron County Airport (20.5 miles)

  • Lowest 8 September, 2025

    37 °F

  • Average September

    55.3 °F

  • Highest 13 September, 2025

    77 °F

Climate (2020–Present)

Ironwood, Gogebic-Iron County Airport (20.5 miles)

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  • Average Low 2020–2025

    32.8 °F

  • Average 2020–2025

    42.5 °F

  • Average High 2020–2025

    51.3 °F
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