Lake Upson Weather Forecast

    • 21
    • 41

    Slight Chance Snow Showers

    • 30
    • 35

    Rain/Snow Likely

    • 9
    • 37

    Breezy

    • 14
    • 22

    Snow Showers Likely

    • 13
    • 28

    Mostly Cloudy

    • 14
    • 23

    Mostly Cloudy

Today 16 Dec Keweenaw

Cloudy in the Morning, then becoming partly cloudy. Breezy and much warmer with Highs around 40. Southwest Winds 15 to 25 Mph with Gusts up to 40 Mph.

Tonight 16 Dec Keweenaw

Breezy. A slight chance of Drizzle, freezing drizzle and snow Showers in the evening. Mostly cloudy. Lows 16 to 21. West Winds 20 to 25 Mph, becoming northwest 15 to 25 Mph after midnight. Gusts up to 45 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

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Lake Upson Temperature Statistics

December Temperature

Copper Harbor (7.5 miles)

  • Lowest 13 December, 2025

    6.1 °F

  • Average December

    19.6 °F

  • Highest 11 December, 2025

    30 °F

Climate (2020–Present)

Copper Harbor (7.5 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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