Diablo Lake Weather Forecast

    • 35
    • 55

    Partly Sunny

    • 37
    • 57

    Partly Sunny

    • 41
    • 56

    Chance Rain Showers

    • 40
    • 54

    Mostly Sunny

    • 44
    • 66

    Mostly Sunny

    • 44
    • 67

    Partly Sunny

Today 25 Apr Foothills and Valleys of the North Cascades

Sunny. Highs in the 60s. Northeast wind 10 to 15 Mph becoming north in the afternoon. Gusts to 25 Mph.

Tonight 25 Apr Foothills and Valleys of the North Cascades

Mostly clear. Lows in the mid 30s to lower 40s. Northwest wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diablo Lake Temperature Statistics

April Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 8 April, 2026

    30 °F

  • Average April

    49 °F

  • Highest 19 April, 2026

    73 °F

Climate (2021–Present)

Arlington Municipal Airport (60.9 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.9 °F
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