Harbor Island Weather Forecast

    • 51
    • 71

    Increasing Clouds

    • 48
    • 60

    Chance Rain

    • 50
    • 61

    Rain Likely

    • 51
    • 61

    Rain

    • 49
    • 58

    Rain

    • 46
    • 57

    Chance Rain

Today 7 Oct City of Seattle

Sunny. Highs near 70. Light wind.

Tonight 7 Oct City of Seattle

Partly cloudy. A slight chance of rain after midnight. Lows near 50. Light wind.

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  • Temperature Real-Time

Harbor Island Temperature Statistics

October Temperature

Boeing Field - King County International Airport (2.5 miles)

  • Lowest 3 October, 2025

    52 °F

  • Average October

    59.7 °F

  • Highest 2 October, 2025

    70 °F

Climate (2020–Present)

Boeing Field - King County International Airport (2.5 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    54 °F

  • Average High 2020–2025

    61.5 °F
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