Diablo Lake Weather Forecast

    • 32
    • 41

    Rain/Snow Likely

    • 31
    • 46

    Partly Sunny

    • 31
    • 51

    Mostly Sunny

    • 34
    • 50

    Partly Sunny

    • 39
    • 51

    Rain/Snow

    • 36
    • 44

    Rain/Snow

    • 37
    • 44

    Rain/Snow Likely

Today 27 Feb Foothills and Valleys of the North Cascades

Rain likely. Rainfall Amounts a tenth to a quarter of an inch possible. Highs in the mid 40s to lower 50s. South wind 10 to 15 Mph with Gusts to 30 Mph.

Tonight 27 Feb Foothills and Valleys of the North Cascades

Mostly cloudy. A chance of rain in the Evening, then a slight chance of rain after midnight. Patchy fog after midnight. Lows in the 30s. South wind 10 to 15 Mph decreasing to 10 Mph or less after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diablo Lake Temperature Statistics

February Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 20 February, 2026

    19.9 °F

  • Average February

    42.1 °F

  • Highest 4 February, 2026

    63 °F

Climate (2021–Present)

Arlington Municipal Airport (60.9 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.9 °F
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