Washington Harbor Weather Forecast

    • 60
    • 69

    Slight Chance Thunderstorms

    • 54
    • 69

    Partly Sunny

    • 59
    • 66

    Mostly Sunny

    • 60
    • 72

    Rain Showers

    • 55
    • 74

    Breezy

    • 55
    • 69

    Mostly Cloudy

    • 56
    • 68

    Chance Rain Showers

Today 8 Sep Keweenaw

Cloudy with a slight chance of Showers and Thunderstorms. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 8 Sep Keweenaw

Cloudy with a slight chance of Showers in the Evening, then mostly clear after midnight. Lows in the mid 60s. Southwest Winds 10 to 15 Mph, becoming west 10 to 20 Mph after midnight. Gusts up to 35 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Harbor Temperature Statistics

September Temperature

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

  • Lowest 3 September, 2026

    55 °F

  • Average September

    64.2 °F

  • Highest 1 September, 2026

    75 °F

Climate (2021–2026)

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

    33.3 °F

  • Average 2021–2026

    40.7 °F

  • Average High 2021–2026

    47.9 °F
Get WillyWeather+ to remove ads