Washington Harbor Weather Forecast

    • 57
    • 68

    Rain Showers Likely

    • 58
    • 70

    Slight Chance Thunderstorms

    • 53
    • 65

    Partly Sunny

    • 58
    • 65

    Partly Sunny

    • 60
    • 72

    Chance Rain Showers

    • 60
    • 73

    Chance Rain Showers

Today 25 Aug Keweenaw

Cloudy with a chance of Showers and Thunderstorms. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 25 Aug Keweenaw

Cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 50s. South Winds 5 to 10 Mph, becoming southwest after midnight. Chance of rain 70 percent.

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Washington Harbor Temperature Statistics

August Temperature

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

  • Lowest 23 August, 2026

    48.9 °F

  • Average August

    60.4 °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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