Diablo Lake Weather Forecast

    • 38
    • 53

    Mostly Sunny

    • 41
    • 52

    Chance Rain

    • 42
    • 53

    Chance Rain

    • 42
    • 54

    Chance Rain

    • 39
    • 51

    Chance Rain

    • 36
    • 51

    Slight Chance Rain/Snow

Today 23 Oct Foothills and Valleys of the North Cascades

Sunny. Highs in the 50s to lower 60s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 23 Oct Foothills and Valleys of the North Cascades

Partly cloudy. Lows in the mid 30s to lower 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

    52.8 °F

  • Highest 16 October, 2026

    78.1 °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

    60 °F
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