Lake Twentytwo Weather Forecast

    • 56
    • 74

    Increasing Clouds

    • 51
    • 70

    Partly Sunny

    • 50
    • 67

    Partly Sunny

    • 51
    • 68

    Mostly Sunny

    • 52
    • 68

    Partly Sunny

    • 53
    • 67

    Partly Sunny

    • 56
    • 70

    Mostly Sunny

Today 7 Aug Cascades of Snohomish and Northern King Counties

Sunny. Freezing level near 15500 feet. Afternoon pass Temperatures in the mid 70s. Light wind becoming west around 10 Mph with Gusts to 20 Mph in the afternoon.

Tonight 7 Aug Cascades of Snohomish and Northern King Counties

Clear then becoming partly cloudy late in the evening then becoming mostly cloudy. Patchy smoke in the evening. Freezing level near 15500 feet. Lows in the lower 50s. West wind in the Passes around 10 Mph with Gusts to 20 Mph in the evening becoming light.

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Lake Twentytwo Temperature Statistics

August Temperature

Arlington Municipal Airport (19.3 miles)

  • Lowest 3 August, 2026

    46.4 °F

  • Average August

    62.7 °F

  • Highest 5 August, 2026

    84 °F

Climate (2021–2026)

Arlington Municipal Airport (19.3 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.8 °F
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