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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

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

Clear

54°F

12°C

Humidity 93%
Wind Speed NNE 4 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 52°F (11°C)
Visibility 8.00 mi
Last update 20 Sep 07:35 AM PDT
Extended Forecast for

Seattle-Tacoma International Airport WA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 72. North northwest wind 3 to 8 mph.

    High: 72 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 53. North wind 5 to 7 mph becoming calm after midnight.

    Low: 53 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 71. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 71 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Increasing clouds, with a low around 54. East northeast wind 3 to 6 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 68. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 68 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 67.

    High: 67 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 72. North northwest wind 3 to 8 mph.
Tonight
Increasing clouds, with a low around 53. North wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly cloudy, with a high near 71. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Increasing clouds, with a low around 54. East northeast wind 3 to 6 mph.
Tuesday
Mostly cloudy, with a high near 68. Light and variable wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
Mostly cloudy, with a high near 67.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Mostly cloudy, with a high near 64.
Thursday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 51.
Friday
A chance of rain. Mostly cloudy, with a high near 62.
Friday Night
A chance of rain. Mostly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Seattle-Tacoma International Airport WA
 47.46°N 122.31°W (Elev. 400 ft)
Last Update:
12:25 am PDT Sep 20, 2026
Forecast Valid:
7am PDT Sep 20, 2026-6pm PDT Sep 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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