Diablo Lake Weather Forecast

    • 46
    • 60

    Decreasing Clouds

    • 46
    • 68

    Mostly Sunny

    • 49
    • 71

    Rain

    • 39
    • 54

    Slight Chance Rain

    • 42
    • 55

    Rain Likely

    • 41
    • 52

    Rain Likely

Today 14 Oct Foothills and Valleys of the North Cascades

Mostly cloudy until late afternoon then becoming mostly sunny. A chance of rain in the morning. Highs in the 60s. Light wind.

Tonight 14 Oct Foothills and Valleys of the North Cascades

Mostly clear. Lows in the 40s. Light wind.

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Diablo Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 12 October, 2026

    32 °F

  • Average October

    53.8 °F

  • Highest 2 October, 2026

    71.1 °F

Climate (2021–2026)

Arlington Municipal Airport (60.9 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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