Cypress Island - Secret Harbor Weather Forecast

    • 51
    • 65

    Increasing Clouds

    • 52
    • 64

    Mostly Cloudy

    • 51
    • 66

    Chance Rain

    • 52
    • 66

    Partly Sunny

    • 52
    • 61

    Partly Sunny

    • 53
    • 64

    Mostly Sunny

Today 10 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly cloudy in the morning then becoming mostly sunny. Patchy fog in the morning. Highs in the mid 60s to lower 70s. Light wind.

Tonight 10 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly cloudy. Lows in the upper 40s to mid 50s. Light wind becoming southeast to 10 Mph after midnight.

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  • Temperature Real-Time

Cypress Island - Secret Harbor Temperature Statistics

September Temperature

Burlington/Mount Vernon, Skagit Regional Airport (13.7 miles)

  • Lowest 3 September, 2026

    50 °F

  • Average September

    60.8 °F

  • Highest 1 September, 2026

    71.6 °F

Climate (2021–2026)

Burlington/Mount Vernon, Skagit Regional Airport (13.7 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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