Diablo Lake Weather Forecast

    • 46
    • 66

    Mostly Sunny

    • 51
    • 70

    Mostly Sunny

    • 57
    • 78

    Sunny

    • 59
    • 82

    Mostly Sunny

    • 60
    • 83

    Partly Sunny

    • 54
    • 76

    Mostly Sunny

Today 11 Jun Foothills and Valleys of the North Cascades

Sunny. Highs in the mid 60s to lower 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 11 Jun Foothills and Valleys of the North Cascades

Mostly clear. Lows in the mid to upper 40s. West wind to 10 Mph in the evening becoming light.

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Diablo Lake Temperature Statistics

June Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 1 June, 2026

    39.9 °F

  • Average June

    57 °F

  • Highest 2 June, 2026

    82.9 °F

Climate (2021–Present)

Arlington Municipal Airport (60.9 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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