O'Brien Lake Weather Forecast

    • 45
    • 74

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

    • 55
    • 79

    Rain Showers

    • 43
    • 71

    Partly Sunny

    • 45
    • 65

    Rain Showers

    • 48
    • 68

    Rain Showers Likely

Today 9 Sep Iron

Sunny. Highs in the mid 70s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 9 Sep Iron

Mostly clear. Cooler with Lows in the mid 40s. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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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 1 September, 2026

    52 °F

  • Average September

    68.4 °F

  • Highest 1 September, 2026

    86 °F

Climate (2021–2026)

Ironwood, Gogebic-Iron County Airport (20.5 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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