Diablo Lake Weather Forecast

    • 43
    • 54

    Rain Showers Likely

    • 43
    • 56

    Rain Likely

    • 38
    • 48

    Chance Rain

    • 32
    • 44

    Rain/Snow

    • 28
    • 41

    Rain/Snow

Today 11 Apr Foothills and Valleys of the North Cascades

A chance of rain in the Morning, then rain likely in the late morning and early afternoon. A chance of rain late in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs in the 50s. Light wind becoming south to 10 Mph in the afternoon.

Tonight 11 Apr 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 mid 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diablo Lake Temperature Statistics

April Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 8 April, 2026

    30 °F
  • Average April

    48.7 °F
  • Highest 6 April, 2026

    69.1 °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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