Larch Lake Weather Forecast

    • 56
    • 73

    Mostly Sunny

    • 52
    • 71

    Partly Sunny

    • 50
    • 64

    Mostly Cloudy

    • 50
    • 64

    Partly Sunny

    • 51
    • 67

    Mostly Sunny

    • 54
    • 71

    Mostly Sunny

Today 23 Jul Foothills and Valleys of the North Cascades

Sunny. Highs in the upper 70s to mid 80s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 23 Jul Foothills and Valleys of the North Cascades

Mostly clear. Lows in the mid to upper 50s. West wind to 10 Mph in the evening becoming light.

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Larch Lake Temperature Statistics

July Temperature

Arlington Municipal Airport (16.2 miles)

  • Lowest 4 July, 2025

    46 °F

  • Average July

    64.7 °F

  • Highest 16 July, 2025

    91 °F

Climate (2020–Present)

Arlington Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    59.7 °F
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