Cascade River State Park Weather Forecast

    • 55
    • 68

    Slight Chance Rain Showers

    • 56
    • 63

    Mostly Cloudy

    • 57
    • 68

    Chance Rain Showers

    • 56
    • 69

    Partly Sunny

    • 59
    • 72

    Mostly Sunny

    • 62
    • 74

    Slight Chance Thunderstorms

Today 16 Aug Southern Cook/North Shore

Partly sunny with a 20 percent chance of Showers. Cooler. Near steady temperature in the upper 60s. East Winds 5 to 10 Mph.

Tonight 16 Aug Southern Cook/North Shore

Partly cloudy in the Evening, then becoming mostly clear. Cooler with Lows around 50. Northeast Winds 5 to 10 Mph with Gusts up to 25 Mph.

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Cascade River State Park Temperature Statistics

August Temperature

Grand Marais, The Bay of Grand Marais (10.6 miles)

  • Lowest 2 August, 2025

    50.6 °F

  • Average August

    66.2 °F

  • Highest 2 August, 2025

    75.7 °F

Climate (2020–Present)

Grand Marais, The Bay of Grand Marais (10.6 miles)

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  • Average Low 2020–2025

    33.8 °F

  • Average 2020–2025

    41.2 °F

  • Average High 2020–2025

    48.3 °F
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