Seattle-Tacoma International Airport Weather Forecast

    • 43
    • 55

    Rain Showers

    • 47
    • 62

    Mostly Cloudy

    • 49
    • 66

    Mostly Cloudy

    • 50
    • 67

    Mostly Cloudy

    • 51
    • 69

    Partly Sunny

    • 51
    • 70

    Partly Sunny

Today 16 May Lowlands of Pierce and Southern King Counties

Mostly cloudy. A slight chance of Showers in the Morning, then a chance of Thunderstorms in the afternoon. Showers likely late in the afternoon. Rainfall Amounts a tenth to a quarter of an inch Possible, except higher Amounts possible in Thunderstorms. Highs in the 50s. Southwest wind 10 to 15 Mph becoming west in the afternoon.

Tonight 16 May Lowlands of Pierce and Southern King Counties

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms in the Evening, then mostly cloudy with a slight chance of Showers late in the evening. Partly cloudy after midnight. Lows in the upper 30s to mid 40s. West wind 10 to 15 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Seattle-Tacoma International Airport Temperature Statistics

May Temperature

Seattle, Seattle-Tacoma International Airport (0 miles)

  • Lowest 9 May, 2026

    48.7 °F

  • Average May

    60.1 °F

  • Highest 12 May, 2026

    82.7 °F

Climate (2021–Present)

Seattle, Seattle-Tacoma International Airport (0 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    61.3 °F
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