Lake Armstrong Weather Forecast

    • 54
    • 83

    Mostly Sunny

    • 53
    • 80

    Mostly Sunny

    • 51
    • 75

    Partly Sunny

    • 50
    • 74

    Mostly Sunny

    • 52
    • 76

    Partly Sunny

    • 52
    • 76

    Partly Sunny

Today 30 Jun Lowlands of Western Skagit and Northwestern Snohomish Counties

Sunny. Patchy fog in the morning. Highs in the 70s. Light wind becoming northwest 10 to 15 Mph in the afternoon.

Tonight 30 Jun Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly clear. Patchy fog in the morning. Lows in the 50s. West wind 10 to 15 Mph in the evening becoming light.

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Lake Armstrong Temperature Statistics

June Temperature

Arlington Municipal Airport (4.3 miles)

  • Lowest 2 June, 2025

    42.1 °F

  • Average June

    60.2 °F

  • Highest 8 June, 2025

    86 °F

Climate (2020–Present)

Arlington Municipal Airport (4.3 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    59.6 °F
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