Blanca Lake Weather Forecast

    • 30
    • 42

    Blizzard

    • 25
    • 35

    Rain/Snow

    • 26
    • 27

    Snow

    • 24
    • 30

    Snow

    • 23
    • 25

    Snow

    • 23
    • 26

    Snow

Today 15 Dec Cascades of Snohomish and Northern King Counties

Rain and snow until late Afternoon, then Showers, a slight chance of Thunderstorms and Showers late in the afternoon. Snow level near 8500 feet. Some Thunderstorms may produce heavy rainfall late in the afternoon. Rainfall Amounts one to three Inches Possible, except higher Amounts possible in Thunderstorms. No snow accumulation. Afternoon pass Temperatures in the mid 40s. Southwest wind in the Passes 10 to 20 Mph. Gusts to 30 Mph increasing to 40 Mph in the afternoon.

Tonight 15 Dec Cascades of Snohomish and Northern King Counties

Showers and a slight chance of Thunderstorms in the evening. Snow. Rain after midnight. Snow level near 4500 feet decreasing to 3500 feet after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Rainfall Amounts a half inch to one inch Possible, except higher Amounts possible in Thunderstorms. Snow accumulation up to 3 Inches. Lows in the lower 30s. West wind in the Passes around 20 Mph with Gusts to 45 Mph decreasing to 10 to 15 Mph with Gusts to 35 Mph after midnight.

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Blanca Lake Temperature Statistics

December Temperature

Arlington Municipal Airport (40.4 miles)

  • Lowest 1 December, 2025

    30 °F

  • Average December

    46.5 °F

  • Highest 8 December, 2025

    57 °F

Climate (2020–Present)

Arlington Municipal Airport (40.4 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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