Duwamish Waterway Weather Forecast

    • 54
    • 64

    Rain

    • 50
    • 63

    Rain Showers

    • 49
    • 64

    Mostly Cloudy

    • 49
    • 65

    Partly Sunny

    • 53
    • 65

    Mostly Cloudy

    • 53
    • 64

    Chance Rain

    • 52
    • 66

    Mostly Cloudy

Today 24 Sep City of Seattle

Mostly cloudy with a chance of rain. Highs in the lower to mid 60s.

Tonight 24 Sep City of Seattle

Rain likely in the Evening, then rain at Times after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the lower to mid 50s. North wind to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Duwamish Waterway Temperature Statistics

September Temperature

Boeing Field - King County International Airport (0.6 miles)

  • Lowest 19 September, 2026

    52 °F

  • Average September

    62.2 °F

  • Highest 9 September, 2026

    78.1 °F

Climate (2021–2026)

Boeing Field - King County International Airport (0.6 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.6 °F
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