Mirror Lake Weather Forecast

    • 45
    • 56

    Chance Rain Showers

    • 47
    • 55

    Partly Sunny

    • 56
    • 68

    Rain Showers Likely

    • 53
    • 64

    Slight Chance Thunderstorms

    • 48
    • 65

    Partly Sunny

    • 49
    • 65

    Partly Sunny

    • 53
    • 67

    Slight Chance Thunderstorms

Today 6 Sep Ontonagon

Mostly cloudy with a 40 percent chance of Showers. West Winds 5 to 15 Mph with Gusts up to 25 Mph.

Tonight 6 Sep Ontonagon

Mostly cloudy. A chance of rain Showers this evening. Lows in the mid 40s. West Winds 5 to 10 Mph, becoming northwest after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mirror Lake Temperature Statistics

September Temperature

Ironwood, Gogebic-Iron County Airport (23 miles)

  • Lowest 4 September, 2025

    41 °F

  • Average September

    55 °F

  • Highest 1 September, 2025

    75.9 °F

Climate (2020–Present)

Ironwood, Gogebic-Iron County Airport (23 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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