Sumner Lake Weather Forecast

    • 23
    • 33

    Increasing Clouds

    • 23
    • 29

    Mostly Cloudy

    • 25
    • 31

    Mostly Cloudy

    • 27
    • 33

    Mostly Cloudy

    • 29
    • 35

    Mostly Cloudy

    • 31
    • 36

    Mostly Cloudy

Today 3 Dec Keweenaw

Cloudy. Highs around 35. West Winds 15 to 20 Mph becoming northwest in the afternoon.

Tonight 3 Dec Keweenaw

A 20 percent chance of snow Showers overnight. Cloudy. Lows 22 to 27. Northwest Winds 15 to 20 Mph becoming north overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Lake Temperature Statistics

December Temperature

Copper Harbor (53.4 miles)

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  • Average December

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Climate (2010–Present)

Copper Harbor (53.4 miles)

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  • Average Low 2010–Present

    37.1 °F

  • Average 2010–Present

    42.7 °F

  • Average High 2010–Present

    48.5 °F
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