Diablo Lake Weather Forecast

    • 39
    • 55

    Chance Rain

    • 42
    • 57

    Partly Sunny

    • 40
    • 55

    Mostly Cloudy

    • 40
    • 58

    Mostly Sunny

    • 43
    • 61

    Partly Sunny

    • 40
    • 53

    Chance Rain

Today 17 Oct Foothills and Valleys of the North Cascades

Cloudy with Showers likely in the Morning, then partly sunny with a chance of Showers late in the morning. Mostly sunny in the afternoon. Rainfall Amounts a tenth to a quarter of an inch possible. Highs in the mid 50s to lower 60s. Southwest wind 10 to 15 Mph becoming west in the afternoon.

Tonight 17 Oct Foothills and Valleys of the North Cascades

Mostly clear. Lows near 40. 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

    54 °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

    60 °F
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