Guemes Island Weather Forecast

    • 55
    • 76

    Becoming Sunny

    • 54
    • 71

    Mostly Sunny

    • 52
    • 67

    Partly Sunny

    • 52
    • 68

    Partly Sunny

    • 54
    • 66

    Rain Likely

    • 53
    • 66

    Rain Likely

Today 16 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Sunny. Haze late in the afternoon. Highs in the mid 70s to lower 80s. North wind to 10 Mph becoming west in the afternoon.

Tonight 16 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Clear. Haze until early morning. Lows in the 50s. Southeast wind 10 to 15 Mph becoming south after midnight.

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Guemes Island Temperature Statistics

September Temperature

Burlington/Mount Vernon, Skagit Regional Airport (9.9 miles)

  • Lowest 1 September, 2025

    51.8 °F

  • Average September

    61.3 °F

  • Highest 3 September, 2025

    78.8 °F

Climate (2020–Present)

Burlington/Mount Vernon, Skagit Regional Airport (9.9 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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