Diablo Lake Weather Forecast

    • 44
    • 50

    Mostly Cloudy

    • 41
    • 55

    Partly Sunny

    • 39
    • 56

    Mostly Sunny

    • 40
    • 53

    Chance Rain

    • 41
    • 48

    Rain

    • 36
    • 45

    Rain/Snow

Today 3 Feb Foothills and Valleys of the North Cascades

Mostly cloudy. Patchy fog in the morning. Highs in the mid 50s to lower 60s. Light wind.

Tonight 3 Feb Foothills and Valleys of the North Cascades

Mostly cloudy. A slight chance of rain until early morning. Lows in the mid 40s to lower 50s. Light wind becoming east to 10 Mph after midnight.

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Diablo Lake Temperature Statistics

February Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 1 February, 2026

    41 °F

  • Average February

    48.7 °F

  • Highest 1 February, 2026

    52 °F

Climate (2021–Present)

Arlington Municipal Airport (60.9 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.7 °F

  • Average High 2021–2026

    59.8 °F
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