Olo Mountain Weather Forecast

    • 52
    • 73

    Decreasing Clouds

    • 51
    • 70

    Partly Sunny

    • 51
    • 69

    Partly Sunny

    • 52
    • 69

    Partly Sunny

    • 53
    • 69

    Partly Sunny

    • 55
    • 72

    Mostly Sunny

Today 8 Aug Cascades of Snohomish and Northern King Counties

Partly sunny. Patchy smoke late in the afternoon. Freezing level near 14500 feet. Afternoon pass Temperatures in the lower 70s. Light wind becoming west around 10 Mph in the Afternoon, Gusts to 20 Mph in the afternoon.

Tonight 8 Aug Cascades of Snohomish and Northern King Counties

Mostly clear. Freezing level near 14000 feet. Lows in the upper 40s. West wind in the Passes around 10 Mph in the evening becoming Light, Gusts to 20 Mph in the evening.

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Olo Mountain Temperature Statistics

August Temperature

Arlington Municipal Airport (13.7 miles)

  • Lowest 3 August, 2026

    46.4 °F

  • Average August

    62.7 °F

  • Highest 5 August, 2026

    84 °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

    59.8 °F
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