Mount Vernon Weather Forecast

    • 54
    • 73

    Mostly Cloudy

    • 55
    • 70

    Chance Rain Showers

    • 55
    • 71

    Mostly Cloudy

    • 55
    • 71

    Mostly Cloudy

    • 55
    • 72

    Mostly Cloudy

    • 56
    • 73

    Rain Showers Likely

Today 8 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly sunny. A slight chance of Showers in the morning. A slight chance of Showers late in the afternoon. Highs in the upper 60s to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 8 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly cloudy. A slight chance of Showers in the evening. A slight chance of Showers in the morning. Lows in the 50s. Northwest wind to 10 Mph becoming south after midnight.

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  • Temperature Real-Time

Mount Vernon Temperature Statistics

September Temperature

Burlington/Mount Vernon, Skagit Regional Airport (5 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    61.6 °F

  • Highest 3 September, 2025

    78.8 °F

Climate (2020–Present)

Burlington/Mount Vernon, Skagit Regional Airport (5 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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