Thornton Lakes Weather Forecast

    • 28
    • 37

    Becoming Sunny

    • 27
    • 38

    Mostly Sunny

    • 34
    • 39

    Mostly Cloudy

    • 33
    • 40

    Mostly Cloudy

    • 34
    • 40

    Chance Rain/Snow

    • 32
    • 36

    Snow Likely

    • 32
    • 34

    Rain/Snow Likely

Today 31 Oct Cascades of Whatcom and Skagit Counties

Mostly cloudy with a chance of rain and snow. Snow level near 5500 feet.

Tonight 31 Oct Cascades of Whatcom and Skagit Counties

Mostly cloudy in the evening then becoming partly cloudy. Freezing level near 6000 feet.

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Thornton Lakes Temperature Statistics

October Temperature

Burlington/Mount Vernon, Skagit Regional Airport (51.6 miles)

  • Lowest 12 October, 2026

    35.6 °F

  • Average October

    51.4 °F

  • Highest 16 October, 2026

    71.6 °F

Climate (2021–2026)

Burlington/Mount Vernon, Skagit Regional Airport (51.6 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    59.2 °F
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