Lake Superior Weather Forecast

    • 52
    • 65

    Mostly Sunny

    • 51
    • 60

    Mostly Sunny

    • 55
    • 62

    Partly Sunny

    • 57
    • 63

    Rain Showers Likely

    • 55
    • 64

    Chance Rain Showers

    • 54
    • 63

    Partly Sunny

Today 22 Aug Southern Cook/North Shore

Mostly sunny. Highs in the lower 70s. Northwest Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 22 Aug Southern Cook/North Shore

Mostly clear. Lows in the mid 40s. North Winds 5 to 10 Mph.

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Lake Superior Temperature Statistics

August Temperature

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

  • Lowest 4 August, 2026

    51.1 °F

  • Average August

    60.4 °F

  • Highest 16 August, 2026

    78.1 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    40.7 °F

  • Average High 2021–2026

    47.9 °F
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