Washington Harbor Weather Forecast

    • 58
    • 71

    Partly Sunny

    • 58
    • 72

    Mostly Cloudy

    • 56
    • 71

    Partly Sunny

    • 59
    • 70

    Mostly Cloudy

    • 59
    • 75

    Rain Showers Likely

    • 60
    • 77

    Partly Sunny

Today 11 Aug Keweenaw

Mostly sunny. West Winds 5 to 10 Mph.

Tonight 11 Aug Keweenaw

Partly cloudy. Patchy fog after midnight. Lows in the lower 60s. Light southwest Winds, becoming west after midnight.

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Washington Harbor Temperature Statistics

August Temperature

Grand Marais, The Bay of Grand Marais (54.1 miles)

  • Lowest 4 August, 2026

    51.1 °F

  • Average August

    60 °F

  • Highest 7 August, 2026

    75.9 °F

Climate (2021–2026)

Grand Marais, The Bay of Grand Marais (54.1 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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