National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

Lat: 47.44472°NLon: 122.31361°WElev: 427.0ft.

Clear

73°F

23°C

Humidity 40%
Wind Speed W 9 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 29 Jul 04:00 PM PDT
Extended Forecast for

Seatac WA

  • Tonight

    Tonight: Mostly clear, with a low around 54. North northwest wind 5 to 8 mph becoming light and variable.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. South southeast wind around 7 mph becoming west southwest in the afternoon.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. West wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Northwest wind 5 to 9 mph becoming south southwest after midnight.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain after 11am. Partly sunny, with a high near 72.

    High: 72 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 54. North northwest wind 5 to 8 mph becoming light and variable.
Thursday
Sunny, with a high near 76. South southeast wind around 7 mph becoming west southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 54. West wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 82. Calm wind becoming west northwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 59. Northwest wind 5 to 9 mph becoming south southwest after midnight.
Saturday
A 30 percent chance of rain after 11am. Partly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Partly sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Seatac WA
 47.46°N 122.31°W (Elev. 400 ft)
Last Update:
2:01 pm PDT Jul 29, 2026
Forecast Valid:
4pm PDT Jul 29, 2026-6pm PDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation