Washington Harbor Weather Forecast

    • 45
    • 74

    Increasing Clouds

    • 43
    • 61

    Mostly Cloudy

    • 45
    • 58

    Rain Showers

    • 39
    • 53

    Chance Rain Showers

    • 37
    • 50

    Chance Rain Showers

    • 37
    • 49

    Mostly Cloudy

Today 13 May Keweenaw

Sunny. Highs 75 to 80 inland to around 66 at the shore. South Winds 5 to 10 Mph, becoming southeast 5 to 15 Mph in the afternoon.

Tonight 13 May Keweenaw

Clear in the Evening, then becoming partly cloudy. Lows 44 to 49. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph, becoming south after midnight.

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  • Temperature Forecast NOAA

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Washington Harbor Temperature Statistics

May Temperature

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

  • Lowest 8 May, 2025

    29.8 °F

  • Average May

    44.8 °F

  • Highest 6 May, 2025

    81.6 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    33.9 °F

  • Average 2020–2025

    41.2 °F

  • Average High 2020–2025

    48.3 °F
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