Seattle-Tacoma International Airport 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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    Rain Likely

Today 8 Dec Lowlands of Pierce and Southern King Counties

Windy. Cloudy with a chance of rain in the Morning, then rain in the afternoon. Patchy fog in the afternoon. Rainfall Amounts a half inch to one inch possible. Highs in the mid to upper 50s. South wind 10 to 15 Mph increasing to 15 to 30 Mph with Gusts to 40 Mph in the afternoon.

Tonight 8 Dec Lowlands of Pierce and Southern King Counties

Windy. Patchy fog until early morning. Rain until early Morning, then cloudy with a chance of rain in the morning. Rainfall Amounts one to three Inches possible. Lows in the mid to upper 40s. Southwest wind 15 to 30 Mph with Gusts to 40 Mph decreasing to 10 to 20 Mph with Gusts to 30 Mph after midnight.

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Seattle-Tacoma International Airport Temperature Statistics

December Temperature

Seattle, Seattle-Tacoma International Airport (0 miles)

  • Lowest 1 December, 2025

    36 °F

  • Average December

    45.2 °F

  • Highest 5 December, 2025

    55 °F

Climate (2020–Present)

Seattle, Seattle-Tacoma International Airport (0 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    53.3 °F

  • Average High 2020–2025

    61.1 °F
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