Union Bay Weather Forecast

    • 67
    • 75

    Rain Showers Likely

    • 65
    • 67

    Mostly Cloudy

    • 67
    • 71

    Mostly Sunny

    • 71
    • 77

    Partly Sunny

    • 65
    • 74

    Partly Sunny

    • 62
    • 68

    Partly Sunny

Today 18 Aug Ontonagon

A chance of Thunderstorms. Showers likely. Highs 72 to 77. Southeast Winds 5 to 10 Mph, becoming south in the afternoon. Chance of rain 70 percent.

Tonight 18 Aug Ontonagon

A chance of Showers with a slight chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Cloudy. Lows 59 to 64. Light south Winds, becoming northwest after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Bay Temperature Statistics

August Temperature

Ironwood, Gogebic-Iron County Airport (31.7 miles)

  • Lowest 1 August, 2025

    43 °F

  • Average August

    68.8 °F

  • Highest 7 August, 2025

    84.9 °F

Climate (2020–Present)

Ironwood, Gogebic-Iron County Airport (31.7 miles)

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  • Average Low 2020–2025

    32.7 °F

  • Average 2020–2025

    42.5 °F

  • Average High 2020–2025

    51.3 °F
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