Union Bay Weather Forecast

    • 43
    • 62

    Mostly Sunny

    • 50
    • 60

    Rain Showers Likely

    • 47
    • 61

    Chance Rain

    • 50
    • 59

    Rain

    • 46
    • 59

    Rain

    • 46
    • 58

    Chance Rain Showers

Today 15 Oct City of Seattle

Sunny. Highs near 60. Light wind.

Tonight 15 Oct City of Seattle

Mostly clear. Lows in the lower to mid 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Bay Temperature Statistics

October Temperature

Boeing Field - King County International Airport (6.8 miles)

  • Lowest 13 October, 2025

    44.1 °F

  • Average October

    56.8 °F

  • Highest 7 October, 2025

    77 °F

Climate (2020–Present)

Boeing Field - King County International Airport (6.8 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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