Mount Baker National Forest Weather Forecast

    • 36
    • 48

    Becoming Sunny

    • 37
    • 45

    Rain Likely

    • 39
    • 45

    Rain

    • 36
    • 44

    Rain/Snow

    • 33
    • 42

    Rain/Snow Likely

    • 32
    • 41

    Rain/Snow Likely

Today 31 Dec Cascades of Snohomish and Northern King Counties

Mostly sunny. Freezing level near 8500 feet increasing to 10500 feet in the afternoon. Afternoon pass Temperatures in the mid 30s. East wind in the Passes around 10 Mph in the morning becoming light.

Tonight 31 Dec Cascades of Snohomish and Northern King Counties

Partly cloudy. Freezing level near 9500 feet decreasing to 7500 feet after midnight. Lows in the mid 20s. Light wind.

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Mount Baker National Forest Temperature Statistics

December Temperature

Arlington Municipal Airport (45.4 miles)

  • Lowest 28 December, 2025

    26.1 °F

  • Average December

    44.7 °F

  • Highest 15 December, 2025

    60.1 °F

Climate (2020–Present)

Arlington Municipal Airport (45.4 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    50.8 °F

  • Average High 2020–2025

    59.8 °F
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