Larch Lake Weather Forecast

    • 49
    • 63

    Mostly Cloudy

    • 51
    • 63

    Mostly Cloudy

    • 55
    • 67

    Chance Rain Showers

    • 56
    • 71

    Chance Rain Showers

    • 56
    • 74

    Mostly Sunny

    • 53
    • 71

    Mostly Sunny

    • 51
    • 66

    Partly Sunny

Today 19 Jul Foothills and Valleys of the North Cascades

Partly sunny. Highs in the mid 60s to lower 70s. South wind to 10 Mph in the morning becoming light.

Tonight 19 Jul Foothills and Valleys of the North Cascades

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower to mid 50s. Light wind.

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Larch Lake Temperature Statistics

July Temperature

Arlington Municipal Airport (16.2 miles)

  • Lowest 4 July, 2025

    46 °F

  • Average July

    65.4 °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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