Olo Mountain Weather Forecast

    • 49
    • 62

    Becoming Sunny

    • 56
    • 72

    Mostly Sunny

    • 60
    • 77

    Partly Sunny

    • 58
    • 76

    Partly Sunny

    • 49
    • 65

    Partly Sunny

    • 48
    • 63

    Partly Sunny

Today 12 Jun Cascades of Snohomish and Northern King Counties

Sunny. Freezing level near 10000 feet. Afternoon pass Temperatures in the lower 60s. Light wind.

Tonight 12 Jun Cascades of Snohomish and Northern King Counties

Mostly clear. Freezing level near 10500 feet. Lows in the mid 40s. West wind in the Passes around 10 Mph with Gusts to 20 Mph in the evening becoming light.

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Olo Mountain Temperature Statistics

June Temperature

Arlington Municipal Airport (13.7 miles)

  • Lowest 1 June, 2026

    39.9 °F

  • Average June

    56.9 °F

  • Highest 2 June, 2026

    82.9 °F

Climate (2021–Present)

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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