Northwest Seattle Weather Forecast

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    Rain

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    Rain

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    Rain

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    Rain

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    Chance Rain

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    Chance Rain

Today 19 Dec City of Seattle

Mostly cloudy. A slight chance of rain in the Morning, then a chance of rain late in the morning. Rain likely in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the mid 40s. South wind 10 to 15 Mph becoming southwest 10 to 20 Mph in the afternoon.

Tonight 19 Dec City of Seattle

Rain likely in the Evening, then rain at Times after midnight. Rainfall Amounts less than a tenth of an inch likely. Lows near 40. South wind 10 to 20 Mph.

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  • Temperature Forecast NOAA

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Northwest Seattle Temperature Statistics

December Temperature

Boeing Field - King County International Airport (10.6 miles)

  • Lowest 1 December, 2025

    34 °F

  • Average December

    49.8 °F

  • Highest 15 December, 2025

    59 °F

Climate (2020–Present)

Boeing Field - King County International Airport (10.6 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    61.5 °F
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