Diablo Lake Weather Forecast

    • 62
    • 81

    Increasing Clouds

    • 57
    • 71

    Chance Rain

    • 55
    • 69

    Chance Rain

    • 54
    • 72

    Mostly Sunny

    • 53
    • 69

    Mostly Sunny

    • 54
    • 74

    Mostly Sunny

Today 24 Jul Foothills and Valleys of the North Cascades

Mostly sunny. Patchy fog in the morning. Highs in the upper 70s to mid 80s. Light wind.

Tonight 24 Jul Foothills and Valleys of the North Cascades

Partly cloudy. Lows in the mid to upper 50s. West wind to 10 Mph becoming south after midnight. Gusts to 20 Mph.

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  • Temperature Real-Time

Diablo Lake Temperature Statistics

July Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 13 July, 2026

    44.6 °F

  • Average July

    62.9 °F

  • Highest 21 July, 2026

    89.1 °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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