O'Brien Lake Weather Forecast

    • 7
    • 18

    Mostly Cloudy

    • 12
    • 36

    Mostly Cloudy

    • 24
    • 33

    Snow

    • -1
    • 34

    Snow

    • 8
    • 16

    Chance Snow

    • -2
    • 23

    Mostly Cloudy

    • 1
    • 15

    Mostly Cloudy

Today 15 Dec Iron

Partly sunny. Not as cool with Highs around 19. West Winds around 5 Mph.

Tonight 15 Dec Iron

Mostly cloudy. Lows around 6 above. Temperature rising to around 15 after midnight. Southwest Winds around 5 Mph, increasing to south 10 to 15 Mph with Gusts up to 30 Mph after midnight. Wind chill Values as low as 2 below.

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O'Brien Lake Temperature Statistics

December Temperature

Ironwood, Gogebic-Iron County Airport (20.5 miles)

  • Lowest 13 December, 2025

    -11.9 °F

  • Average December

    11.6 °F

  • Highest 11 December, 2025

    28.9 °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

    42.6 °F

  • Average High 2020–2025

    51.5 °F
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