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.

Mist

54°F

12°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 52°F (11°C)
Visibility 4.00 mi
Last update 19 Sep 10:30 AM PDT
Extended Forecast for

3 Miles W Des Moines WA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 71. Calm wind.

    High: 71 °F

    Decreasing
    Clouds

  • Tonight

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

    Low: 53 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 71. Calm wind becoming north around 5 mph in the afternoon.

    High: 71 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. North wind 3 to 6 mph.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 70. Calm wind.

    High: 70 °F

    Mostly Sunny

  • Monday Night

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

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 71. Calm wind.
Tonight
Increasing clouds, with a low around 53. North wind around 5 mph becoming calm after midnight.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 71. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 53. North wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 70. Calm wind.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Partly sunny, with a high near 68.
Wednesday Night
Mostly cloudy, with a low around 53.
Thursday
Mostly cloudy, with a high near 65.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Des Moines WA
 47.39°N 122.38°W (Elev. 36 ft)
Last Update:
12:25 am PDT Sep 19, 2026
Forecast Valid:
10am PDT Sep 19, 2026-6pm PDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation