Chicago Bay Weather Forecast

    • 52
    • 71

    Mostly Sunny

    • 51
    • 63

    Partly Sunny

    • 51
    • 62

    Slight Chance Rain Showers

    • 52
    • 65

    Partly Sunny

    • 49
    • 65

    Partly Sunny

    • 49
    • 62

    Mostly Cloudy

    • 52
    • 63

    Chance Rain Showers

Today 18 Aug Southern Cook/North Shore

Mostly sunny. Near steady temperature in the lower 70s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 18 Aug Southern Cook/North Shore

Mostly clear. Cold with Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

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Chicago Bay Temperature Statistics

August Temperature

Grand Marais, The Bay of Grand Marais (18.6 miles)

  • Lowest 4 August, 2026

    51.1 °F

  • Average August

    60.3 °F

  • Highest 16 August, 2026

    78.1 °F

Climate (2021–2026)

Grand Marais, The Bay of Grand Marais (18.6 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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