Lake Mason Weather Forecast

    • 18
    • 20

    Mostly Cloudy

    • 21
    • 24

    Mostly Cloudy

    • 6
    • 23

    Snow Showers Likely

    • 7
    • 11

    Cold

    • 15
    • 20

    Chance Snow Showers

    • 19
    • 24

    Slight Chance Snow Showers

    • 28
    • 34

    Mostly Cloudy

Today 10 Dec Keweenaw

Mostly cloudy. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 10 Dec Keweenaw

Cloudy. Near steady temperature around 17. Northwest Winds 10 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mason Temperature Statistics

December Temperature

Copper Harbor (52.8 miles)

  • Lowest 4 December, 2025

    10.9 °F

  • Average December

    18.6 °F

  • Highest 3 December, 2025

    28 °F

Climate (2020–Present)

Copper Harbor (52.8 miles)

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  • Average Low 2020–2025

    38.7 °F

  • Average 2020–2025

    44.9 °F

  • Average High 2020–2025

    51.1 °F
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