Mason Lake Weather Forecast

    • 47
    • 62

    Decreasing Clouds

    • 51
    • 69

    Mostly Sunny

    • 44
    • 58

    Chance Rain

    • 42
    • 53

    Slight Chance Rain

    • 40
    • 50

    Rain Likely

    • 39
    • 44

    Rain

Today 1 Jun Cascades of Southern King County

Mostly sunny. Freezing level near 9500 feet. Afternoon pass Temperatures in the upper 60s. Light wind in the Passes.

Tonight 1 Jun Cascades of Southern King County

Mostly cloudy. Freezing level near 10000 feet. Light wind in the Passes.

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Mason Lake Temperature Statistics

June Temperature

Stampede Pass (13.7 miles)

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  • Average June

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Climate (2021–Present)

Stampede Pass (13.7 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    41.6 °F

  • Average High 2021–2026

    48.4 °F
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