Mount Baker National Forest Weather Forecast

    • 47
    • 65

    Decreasing Clouds

    • 51
    • 63

    Increasing Clouds

    • 49
    • 67

    Rain

    • 48
    • 58

    Rain Likely

    • 48
    • 64

    Partly Sunny

    • 50
    • 69

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

Today 10 Sep Cascades of Snohomish and Northern King Counties

Partly sunny. A slight chance of rain in the morning. Snow level near 9500 feet in the morning. Afternoon pass Temperatures in the upper 50s. West wind in the Passes around 10 Mph with Gusts to 20 Mph.

Tonight 10 Sep Cascades of Snohomish and Northern King Counties

Partly cloudy with a slight chance of rain. Snow level near 7000 feet. Lows in the lower 40s. Light wind. Gusts to 20 Mph in the evening.

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Mount Baker National Forest Temperature Statistics

September Temperature

Arlington Municipal Airport (45.4 miles)

  • Lowest 8 September, 2026

    46 °F

  • Average September

    60.2 °F

  • Highest 8 September, 2026

    73.9 °F

Climate (2021–2026)

Arlington Municipal Airport (45.4 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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