North Cascades National Park Weather Forecast

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    Chance Thunderstorms

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    Chance Rain Showers

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    Slight Chance Rain Showers

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    Partly Sunny

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    Chance Rain Showers

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    Chance Rain Showers

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    Chance Rain Showers

Today 9 Sep Cascades of Whatcom and Skagit Counties

Mostly sunny. A slight chance of Showers late in the morning. A chance of Showers in the afternoon. A slight chance of Thunderstorms late in the afternoon. Snow level near 10000 feet.

Tonight 9 Sep Cascades of Whatcom and Skagit Counties

Partly cloudy. A slight chance of Thunderstorms and Showers in the Evening, then a slight chance of Showers late in the evening. Snow level near 10500 feet.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

North Cascades National Park Temperature Statistics

September Temperature

Burlington/Mount Vernon, Skagit Regional Airport (55.3 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    61.4 °F

  • Highest 3 September, 2025

    78.8 °F

Climate (2020–Present)

Burlington/Mount Vernon, Skagit Regional Airport (55.3 miles)

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  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    59.7 °F
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