Chicago Bay Weather Forecast

    • 44
    • 52

    Rain Showers

    • 38
    • 47

    Rain Showers

    • 35
    • 43

    Rain Showers

    • 31
    • 42

    Mostly Cloudy

    • 36
    • 44

    Partly Sunny

    • 40
    • 47

    Partly Sunny

    • 44
    • 49

    Slight Chance Rain Showers

Today 20 Oct Southern Cook/North Shore

Mostly cloudy with a 50 percent chance of Showers. Near steady temperature around 50. East Winds 10 to 15 Mph with Gusts up to 35 Mph.

Tonight 20 Oct Southern Cook/North Shore

Showers, mainly this evening. Lows around 40. Southeast Winds 10 to 15 Mph, becoming southwest 5 to 10 Mph after midnight. Gusts up to 35 Mph. Chance of rain near 100 percent.

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Chicago Bay Temperature Statistics

October Temperature

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

  • Lowest 7 October, 2025

    37.9 °F

  • Average October

    54.5 °F

  • Highest 3 October, 2025

    71.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    34 °F

  • Average 2020–2025

    41.3 °F

  • Average High 2020–2025

    48.5 °F
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