Siskiwit Lake Weather Forecast

    • 9
    • 28

    Chance Snow Showers

    • 20
    • 24

    Mostly Cloudy

    • 23
    • 32

    Chance Snow Showers

    • 18
    • 30

    Mostly Cloudy

    • 30
    • 34

    Mostly Cloudy

    • 21
    • 37

    Mostly Cloudy

Today 20 Dec Keweenaw

Snow Showers. Patchy blowing snow. Heavy freezing spray this afternoon. Snow accumulation of 1 to 3 Inches. Windy, warmer with Highs in the mid 20s. Temperature falling into the middle teens this afternoon. West Winds 20 to 30 Mph. Gusts up to 40 Mph, increasing to 50 Mph this afternoon. Chance of snow 80 percent. Wind chill Values as low as 15 below this afternoon.

Tonight 20 Dec Keweenaw

Windy. Snow Showers likely in the Evening, then a chance of snow Showers after midnight. Heavy freezing spray in the evening. Patchy blowing snow. Visibility one quarter mile or less at Times in the evening. Snow accumulation around an inch. Lows 4 to 9 above inland to around 11 at the shore. Northwest Winds 20 to 30 Mph. Gusts up to 50 Mph, decreasing to 40 Mph after midnight. Chance of snow 70 percent.

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Siskiwit Lake Temperature Statistics

December Temperature

Copper Harbor (56.5 miles)

  • Lowest 13 December, 2025

    6.1 °F

  • Average December

    21.7 °F

  • Highest 16 December, 2025

    46 °F

Climate (2020–Present)

Copper Harbor (56.5 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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