Seattle-Tacoma International Airport Weather Forecast

    • 46
    • 59

    Increasing Clouds

    • 46
    • 60

    Mostly Cloudy

    • 44
    • 60

    Mostly Sunny

    • 45
    • 64

    Partly Sunny

    • 45
    • 59

    Chance Rain

    • 43
    • 58

    Mostly Cloudy

Today 18 Oct Lowlands of Pierce and Southern King Counties

Mostly sunny. Patchy fog in the morning. Highs in the mid 50s to lower 60s. Northeast wind to 10 Mph becoming north in the afternoon.

Tonight 18 Oct Lowlands of Pierce and Southern King Counties

Cloudy. Areas of fog in the morning. Lows in the upper 30s to mid 40s. North wind to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Seattle-Tacoma International Airport Temperature Statistics

October Temperature

Seattle, Seattle-Tacoma International Airport (0 miles)

  • Lowest 12 October, 2026

    41.6 °F

  • Average October

    57.8 °F

  • Highest 16 October, 2026

    75 °F

Climate (2021–2026)

Seattle, Seattle-Tacoma International Airport (0 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    61.3 °F
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