Guemes Island - Guemes Weather Forecast

    • 47
    • 60

    Chance Rain

    • 47
    • 59

    Mostly Cloudy

    • 49
    • 60

    Mostly Cloudy

    • 47
    • 63

    Partly Sunny

    • 48
    • 65

    Mostly Sunny

    • 49
    • 67

    Partly Sunny

    • 48
    • 66

    Partly Sunny

Today 29 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Rain in the late morning and early Afternoon, then cloudy with a chance of rain late in the afternoon. Rainfall Amounts a half inch to one inch possible. Highs in the mid 50s to lower 60s. South wind 10 to 15 Mph with Gusts to 25 Mph.

Tonight 29 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly cloudy. A slight chance of rain in the evening. Patchy fog after midnight. Lows in the mid 40s to lower 50s. South wind to 10 Mph in the evening becoming light.

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Guemes Island - Guemes Temperature Statistics

September Temperature

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

  • Lowest 27 September, 2026

    41 °F

  • Average September

    58.3 °F

  • Highest 9 September, 2026

    75.2 °F

Climate (2021–2026)

Burlington/Mount Vernon, Skagit Regional Airport (9.9 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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