Washington Harbor Weather Forecast

    • 55
    • 70

    Mostly Sunny

    • 54
    • 69

    Mostly Sunny

    • 60
    • 69

    Chance Rain Showers

    • 58
    • 70

    Chance Rain Showers

    • 57
    • 71

    Slight Chance Thunderstorms

    • 58
    • 68

    Partly Sunny

Today 18 Aug Keweenaw

Sunny. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 18 Aug Keweenaw

Clear. Lows in the upper 50s. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest 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

    60.3 °F

  • Highest 16 August, 2026

    78.1 °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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