Olo Mountain Weather Forecast

    • 51
    • 61

    Mostly Cloudy

    • 46
    • 60

    Mostly Cloudy

    • 50
    • 65

    Mostly Sunny

    • 54
    • 72

    Mostly Sunny

    • 52
    • 66

    Mostly Cloudy

    • 47
    • 59

    Chance Rain

    • 48
    • 61

    Partly Sunny

Today 3 Jul Cascades of Snohomish and Northern King Counties

Cloudy with a chance of Showers in the Morning, then mostly cloudy with a slight chance of Showers late in the morning. Mostly sunny in the afternoon. Snow level near 8000 feet. Afternoon pass Temperatures in the lower 60s. Light wind.

Tonight 3 Jul Cascades of Snohomish and Northern King Counties

Mostly cloudy. Freezing level near 12500 feet. Lows in the upper 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

July Temperature

Arlington Municipal Airport (13.7 miles)

  • Lowest 1 July, 2026

    53.1 °F

  • Average July

    58.8 °F

  • Highest 1 July, 2026

    66.9 °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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