Diablo Lake Weather Forecast

    • 36
    • 56

    Sunny

    • 39
    • 59

    Mostly Sunny

    • 45
    • 59

    Chance Rain

    • 45
    • 60

    Chance Rain

    • 47
    • 67

    Partly Sunny

Today 11 Oct Foothills and Valleys of the North Cascades

Sunny. Patchy fog in the morning. Highs in the upper 50s to mid 60s. Northeast wind to 10 Mph becoming northwest in the afternoon. Gusts to 20 Mph.

Tonight 11 Oct Foothills and Valleys of the North Cascades

Clear. Lows in the mid 30s to lower 40s. North wind to 10 Mph becoming east after midnight.

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Diablo Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 8 October, 2026

    44.1 °F

  • Average October

    56.2 °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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