Burlington Weather Forecast

    • 49
    • 69

    Areas Fog

    • 52
    • 69

    Mostly Cloudy

    • 49
    • 67

    Mostly Cloudy

    • 46
    • 65

    Slight Chance Rain

    • 48
    • 64

    Rain Likely

    • 45
    • 61

    Chance Rain

Today 20 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly sunny. Areas of fog in the morning. Patchy fog late in the morning. Highs in the 60s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 20 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly cloudy. Patchy fog in the morning. Lows in the mid 40s to lower 50s. West wind to 10 Mph in the evening becoming light.

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Burlington Temperature Statistics

September Temperature

Burlington/Mount Vernon, Skagit Regional Airport (4.3 miles)

  • Lowest 16 September, 2026

    46.4 °F

  • Average September

    59.8 °F

  • Highest 9 September, 2026

    75.2 °F

Climate (2021–2026)

Burlington/Mount Vernon, Skagit Regional Airport (4.3 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    59.3 °F
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