Swinomish Channel - Shelter Bay Weather Forecast

    • 53
    • 69

    Mostly Sunny

    • 56
    • 70

    Mostly Cloudy

    • 53
    • 68

    Partly Sunny

    • 53
    • 66

    Chance Rain

    • 52
    • 66

    Partly Sunny

    • 52
    • 68

    Partly Sunny

Today 8 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly sunny. Areas of fog in the morning. Highs in the mid 60s to lower 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 8 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly clear. Lows in the upper 40s to mid 50s. Northwest wind to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

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Swinomish Channel - Shelter Bay Temperature Statistics

September Temperature

Whidbey Island Naval Air Station - Ault Field (6.8 miles)

  • Lowest 6 September, 2026

    46.9 °F

  • Average September

    57.7 °F

  • Highest 2 September, 2026

    68 °F

Climate (2021–2026)

Whidbey Island Naval Air Station - Ault Field (6.8 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    56 °F
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