Washington Harbor Weather Forecast

    • 43
    • 66

    Mostly Sunny

    • 42
    • 62

    Mostly Sunny

    • 44
    • 59

    Mostly Sunny

    • 44
    • 63

    Mostly Sunny

    • 42
    • 61

    Mostly Sunny

    • 46
    • 63

    Partly Sunny

Today 26 May Keweenaw

Mostly sunny. Highs in the lower 70s. North Winds 5 to 10 Mph, becoming light south in the afternoon.

Tonight 26 May Keweenaw

Mostly clear. Lows 44 to 49. Light southeast Winds, becoming north 5 to 10 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Harbor Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    26.1 °F

  • Average May

    41.8 °F

  • Highest 15 May, 2026

    70 °F

Climate (2021–Present)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    33.6 °F

  • Average 2021–2026

    41 °F

  • Average High 2021–2026

    48.2 °F
Get WillyWeather+ to remove ads