Mason Lake Weather Forecast

    • 31
    • 34

    Rain/Snow

    • 26
    • 34

    Chance Rain/Snow

    • 29
    • 34

    Mostly Cloudy

    • 35
    • 37

    Rain

    • 35
    • 40

    Rain

    • 34
    • 36

    Rain/Snow

    • 34
    • 36

    Rain/Snow

Today 1 Dec Cascades of Southern King County

Partly sunny. Freezing level near 5500 feet. Afternoon pass Temperatures in the mid 30s. Light wind in the Passes.

Tonight 1 Dec Cascades of Southern King County

Mostly cloudy. A chance of rain in the evening. A chance of snow. Rain at Times after midnight. Snow level near 4500 feet. Rainfall Amounts a quarter to a half inch possible. Snow accumulation up to 2 Inches. Light wind in the Passes.

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Mason Lake Temperature Statistics

December Temperature

Stampede Pass (13.7 miles)

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  • Average December

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Climate (2020–Present)

Stampede Pass (13.7 miles)

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  • Average Low 2020–2025

    36.2 °F

  • Average 2020–2025

    41.5 °F

  • Average High 2020–2025

    48.3 °F
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