Willow Island Weather Forecast

    • 44
    • 48

    Rain

    • 41
    • 50

    Rain

    • 40
    • 45

    Rain

    • 41
    • 45

    Rain Likely

    • 41
    • 46

    Rain

    • 41
    • 46

    Rain Likely

    • 39
    • 46

    Chance Rain

Today 17 Dec San Juan County

Windy. Mostly cloudy with a chance of rain. Highs in the mid 40s to lower 50s. West wind 20 to 35 Mph becoming southwest 15 to 30 Mph in the afternoon.

Tonight 17 Dec San Juan County

Rain likely in the Evening, then a chance of rain after midnight. Rain at Times late in the night. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the upper 30s to mid 40s. South wind 10 to 20 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Willow Island Temperature Statistics

December Temperature

Friday Harbor Airport (9.3 miles)

  • Lowest 1 December, 2025

    36 °F

  • Average December

    47.3 °F

  • Highest 15 December, 2025

    57 °F

Climate (2020–Present)

Friday Harbor Airport (9.3 miles)

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

  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    59.6 °F
Get WillyWeather+ to remove ads