Mount Baker National Forest Weather Forecast

    • 36
    • 48

    Becoming Sunny

    • 37
    • 45

    Rain Likely

    • 37
    • 44

    Rain

    • 35
    • 43

    Rain/Snow

    • 32
    • 40

    Rain/Snow Likely

    • 32
    • 41

    Rain/Snow Likely

Today 31 Dec Cascades of Snohomish and Northern King Counties

Mostly sunny. Freezing level near 10000 feet. Afternoon pass Temperatures in the mid 30s. Light wind.

Tonight 31 Dec Cascades of Snohomish and Northern King Counties

Mostly clear. Freezing level near 8500 feet. Lows in the lower 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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