Olo Mountain Weather Forecast

    • 36
    • 49

    Chance Rain

    • 37
    • 54

    Sunny

    • 38
    • 55

    Mostly Sunny

    • 45
    • 54

    Chance Rain

    • 44
    • 55

    Chance Rain

    • 47
    • 62

    Partly Sunny

Today 10 Oct Cascades of Snohomish and Northern King Counties

Mostly cloudy. A chance of Showers in the Morning, then a slight chance of Showers in the late morning and early afternoon. A chance of Showers late in the afternoon. Snow level near 4500 feet. Afternoon pass Temperatures in the lower 40s. Light wind.

Tonight 10 Oct Cascades of Snohomish and Northern King Counties

Partly cloudy. A slight chance of Showers in the evening. Snow level near 4500 feet. Lows in the lower 30s. Light wind.

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Olo Mountain Temperature Statistics

October Temperature

Arlington Municipal Airport (13.7 miles)

  • Lowest 8 October, 2026

    44.1 °F

  • Average October

    56.4 °F

  • Highest 2 October, 2026

    71.1 °F

Climate (2021–2026)

Arlington Municipal Airport (13.7 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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