Diablo Lake Weather Forecast

    • 45
    • 65

    Sunny

    • 44
    • 66

    Mostly Sunny

    • 42
    • 58

    Slight Chance Rain

    • 38
    • 50

    Partly Sunny

    • 39
    • 50

    Chance Rain/Snow

    • 40
    • 52

    Slight Chance Rain

Today 20 Oct Foothills and Valleys of the North Cascades

Sunny. Patchy frost in the morning. Highs in the 60s. Northeast wind to 10 Mph in the morning becoming light.

Tonight 20 Oct Foothills and Valleys of the North Cascades

Mostly clear. Lows in the upper 30s to mid 40s. Light wind.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Diablo Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 12 October, 2026

    32 °F

  • Average October

    53.5 °F

  • Highest 16 October, 2026

    78.1 °F

Climate (2021–2026)

Arlington Municipal Airport (60.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    60 °F
Get WillyWeather+ to remove ads