Olo Mountain Weather Forecast

    • 38
    • 44

    Rain

    • 41
    • 43

    Rain

    • 45
    • 46

    Rain

    • 39
    • 52

    Chance Rain

    • 35
    • 48

    Slight Chance Rain

    • 33
    • 46

    Partly Sunny

Today 10 Jan Cascades of Snohomish and Northern King Counties

Mostly cloudy. A slight chance of rain and snow in the afternoon. Snow level near 4000 feet. No snow accumulation. Afternoon pass Temperatures in the mid 30s. Light wind.

Tonight 10 Jan Cascades of Snohomish and Northern King Counties

A chance of rain and snow in the Evening, then rain and snow likely late in the evening. Rain and snow after midnight. Patchy fog after midnight. Snow level near 5000 feet. Rainfall Amounts a half inch to one inch possible. Snow accumulation up to 1 inch. Lows in the lower 30s. Light wind.

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  • Temperature Forecast NOAA

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Olo Mountain Temperature Statistics

January Temperature

Arlington Municipal Airport (13.7 miles)

  • Lowest 1 January, 2026

    26.6 °F

  • Average January

    41.7 °F

  • Highest 3 January, 2026

    54 °F

Climate (2021–Present)

Arlington Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.7 °F

  • Average High 2021–2026

    59.8 °F
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