Diablo Lake Weather Forecast

    • 50
    • 71

    Increasing Clouds

    • 42
    • 56

    Rain

    • 37
    • 51

    Chance Rain

    • 37
    • 56

    Mostly Sunny

    • 42
    • 60

    Mostly Sunny

    • 44
    • 60

    Chance Rain

Today 8 Oct Foothills and Valleys of the North Cascades

Mostly sunny. Highs in the upper 60s to mid 70s. Light wind.

Tonight 8 Oct Foothills and Valleys of the North Cascades

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain after midnight. Mostly cloudy with a chance of rain in the morning. Lows near 50. South wind 10 to 15 Mph with Gusts to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diablo Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 5 October, 2026

    46 °F

  • Average October

    57 °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

    42.5 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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