Diablo Lake Weather Forecast

    • 45
    • 48

    Rain

    • 38
    • 52

    Rain

    • 34
    • 43

    Rain/Snow

    • 34
    • 39

    Rain/Snow

    • 31
    • 39

    Rain/Snow

    • 30
    • 38

    Rain/Snow

Today 14 Dec Foothills and Valleys of the North Cascades

Rain at Times in the Morning, then rain likely in the afternoon. Rainfall Amounts a tenth to a quarter of an inch possible. Highs in the lower to mid 50s. Southeast wind 10 to 20 Mph. Gusts to 30 Mph.

Tonight 14 Dec Foothills and Valleys of the North Cascades

Breezy. A chance of rain in the Evening, then rain likely late in the evening. Rain after midnight. Rainfall Amounts a half inch to one inch possible. Lows near 50. Southeast wind 15 to 25 Mph. Gusts to 35 Mph increasing to 50 Mph after midnight.

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Diablo Lake Temperature Statistics

December Temperature

Arlington Municipal Airport (60.9 miles)

  • Lowest 1 December, 2025

    30 °F

  • Average December

    46.2 °F

  • Highest 8 December, 2025

    57 °F

Climate (2020–Present)

Arlington Municipal Airport (60.9 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    50.7 °F

  • Average High 2020–2025

    59.8 °F
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