Lake Superior Weather Forecast

    • 7
    • 29

    Windy

    • 19
    • 24

    Mostly Cloudy

    • 24
    • 33

    Chance Snow Showers

    • 17
    • 32

    Mostly Cloudy

    • 29
    • 34

    Mostly Cloudy

    • 24
    • 37

    Slight Chance Rain/Snow

Today 20 Dec Southern Cook/North Shore

Mostly cloudy with a chance of Flurries in the Morning, then partly sunny in the afternoon. Highs around 17. Temperature falling to around 4 above in the afternoon. West Winds 15 to 20 Mph with Gusts up to 40 Mph. Wind chill Values as low as 18 below.

Tonight 20 Dec Southern Cook/North Shore

Snow likely. Additional snow accumulation around an inch. Total snow accumulation 3 to 4 Inches. Not as cool. Near steady temperature around 19. Southwest Winds 10 to 15 Mph with Gusts up to 35 Mph. Chance of snow 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Superior Temperature Statistics

December Temperature

Grand Marais, The Bay of Grand Marais (28 miles)

  • Lowest 13 December, 2025

    -9 °F

  • Average December

    15.3 °F

  • Highest 16 December, 2025

    44.1 °F

Climate (2020–Present)

Grand Marais, The Bay of Grand Marais (28 miles)

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  • Average Low 2020–2025

    33.8 °F

  • Average 2020–2025

    41.3 °F

  • Average High 2020–2025

    48.5 °F
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