Diablo Lake Weather Forecast

    • 30
    • 42

    Snow Likely

    • 31
    • 44

    Snow Likely

    • 39
    • 50

    Rain/Snow

    • 35
    • 46

    Rain

    • 28
    • 42

    Rain/Snow

    • 27
    • 43

    Chance Snow

Today 21 Mar Foothills and Valleys of the North Cascades

Mostly sunny. A chance of rain and snow in the Morning, then a slight chance of rain in the late morning and early afternoon. Snow level near 1500 feet. Highs in the mid 40s to lower 50s. Northwest wind to 10 Mph becoming west with Gusts to 20 Mph in the afternoon.

Tonight 21 Mar Foothills and Valleys of the North Cascades

Partly cloudy with a slight chance of rain in the Evening, then mostly cloudy with a chance of rain and snow after midnight. Snow level near 1500 feet. Lows in the mid to upper 30s. Southwest wind to 10 Mph becoming southeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diablo Lake Temperature Statistics

March Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 2 March, 2026

    27 °F

  • Average March

    44.3 °F

  • Highest 2 March, 2026

    59 °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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