Sumner Lake Weather Forecast

    • -1
    • 14

    Chance Snow Showers

    • -14
    • 2

    Chance Snow Showers

    • -10
    • -7

    Chance Snow Showers

    • -1
    • 2

    Cold

    • -2
    • 6

    Cold

    • 3
    • 11

    Mostly Cloudy

    • 3
    • 11

    Mostly Cloudy

Today 21 Jan Keweenaw

Snow Showers. Snow may be heavy at Times. Snow accumulation around an inch. West Winds 5 to 15 Mph with Gusts up to 25 Mph. Chance of snow 90 percent.

Tonight 21 Jan Keweenaw

Snow Showers likely. Patchy blowing snow after midnight. Snow accumulation around an inch. Lows 4 below to 1 above. Northwest Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of snow 70 percent. Wind chill Values as low as 25 below after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Lake Temperature Statistics

January Temperature

Copper Harbor (53.4 miles)

  • Lowest 19 January, 2026

    3 °F

  • Average January

    23 °F

  • Highest 13 January, 2026

    37 °F

Climate (2021–Present)

Copper Harbor (53.4 miles)

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  • Average Low 2021–2026

    38.6 °F

  • Average 2021–2026

    44.8 °F

  • Average High 2021–2026

    51 °F
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