Niagara Weather Forecast

    • 10
    • 19

    Increasing Clouds

    • 21
    • 29

    Chance Snow

    • 16
    • 37

    Partly Sunny

    • 24
    • 34

    Mostly Cloudy

    • 24
    • 38

    Slight Chance Snow Showers

    • 19
    • 31

    Cloudy

    • 13
    • 32

    Mostly Cloudy

Today 21 Dec Northern Marinette County

Colder. Mostly sunny. Highs around 20. Southwest wind around 5 Mph.

Tonight 21 Dec Northern Marinette County

Mostly clear in the Evening, then mostly cloudy with a chance of light snow after midnight. Nearly steady temperature around 15. Light and variable wind. Chance of snow 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Niagara Temperature Statistics

December Temperature

Iron Mountain / Kingsford, Ford Airport (6.2 miles)

  • Lowest 7 December, 2025

    -8 °F

  • Average December

    17 °F

  • Highest 16 December, 2025

    41 °F

Climate (2020–Present)

Iron Mountain / Kingsford, Ford Airport (6.2 miles)

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  • Average Low 2020–2025

    33.6 °F

  • Average 2020–2025

    44.4 °F

  • Average High 2020–2025

    55 °F
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