Boulder River Wilderness Weather Forecast

    • 33
    • 44

    Rain/Snow

    • 34
    • 35

    Snow

    • 30
    • 40

    Snow Showers

    • 30
    • 34

    Snow

    • 28
    • 34

    Snow

    • 33
    • 35

    Snow

Today 16 Dec Cascades of Snohomish and Northern King Counties

Rain and snow through the day. Widespread dense freezing fog late in the morning. Patchy fog in the afternoon. Snow level near 5000 feet. Snow accumulation up to 3 Inches. Afternoon pass Temperatures in the upper 30s. Southwest wind in the Passes around 10 Mph.

Tonight 16 Dec Cascades of Snohomish and Northern King Counties

Windy. Patchy fog in the evening. Areas of fog late in the Evening, then patchy fog after midnight. Rain and snow. Snow level near 5500 feet. Precipitation may be heavy at Times after midnight. Rainfall Amounts one to three Inches possible. Snow accumulation of 1 to 3 Inches. Lows in the mid 20s. Southwest wind in the Passes 10 to 15 Mph increasing to 20 to 30 Mph after Midnight, Gusts to 40 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Boulder River Wilderness Temperature Statistics

December Temperature

Arlington Municipal Airport (23.6 miles)

  • Lowest 1 December, 2025

    30 °F

  • Average December

    47.1 °F

  • Highest 8 December, 2025

    57 °F

Climate (2020–Present)

Arlington Municipal Airport (23.6 miles)

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

  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    50.7 °F

  • Average High 2020–2025

    59.8 °F
Get WillyWeather+ to remove ads