Swartz Lake Weather Forecast

    • 41
    • 60

    Increasing Clouds

    • 37
    • 59

    Mostly Cloudy

    • 41
    • 62

    Mostly Sunny

    • 42
    • 66

    Partly Sunny

    • 40
    • 59

    Rain Likely

    • 37
    • 56

    Chance Rain

Today 18 Oct Foothills and Valleys of the North Cascades

Sunny. Highs in the mid 50s to lower 60s. Light wind.

Tonight 18 Oct Foothills and Valleys of the North Cascades

Mostly cloudy. Lows in the upper 30s to mid 40s. Light wind.

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Swartz Lake Temperature Statistics

October Temperature

Arlington Municipal Airport (11.8 miles)

  • Lowest 12 October, 2026

    32 °F

  • Average October

    54 °F

  • Highest 16 October, 2026

    78.1 °F

Climate (2021–2026)

Arlington Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    60 °F
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