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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

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

Mostly Cloudy

70°F

21°C

Humidity 56%
Wind Speed WSW 10 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 28 Aug 01:20 PM PDT
Extended Forecast for

Des Moines WA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 74. West wind around 5 mph.

    High: 74 °F

    Mostly Sunny

  • Tonight

    Tonight: Rain likely, mainly after 5am. Increasing clouds, with a low around 55. North northwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Mostly Cloudy
    then Rain
    Likely

  • Saturday

    Saturday: Rain and thunderstorms likely before 2pm, then a chance of rain. Mostly cloudy, with a high near 72. South southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53. South wind around 6 mph.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 73. South wind 3 to 5 mph.

    High: 73 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 74. West wind around 5 mph.
Tonight
Rain likely, mainly after 5am. Increasing clouds, with a low around 55. North northwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain and thunderstorms likely before 2pm, then a chance of rain. Mostly cloudy, with a high near 72. South southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly cloudy, with a low around 53. South wind around 6 mph.
Sunday
Mostly cloudy, with a high near 73. South wind 3 to 5 mph.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Partly sunny, with a high near 73.
Tuesday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 55.
Wednesday
Rain. Mostly cloudy, with a high near 64.
Wednesday Night
Rain. Mostly cloudy, with a low around 52.
Thursday
A chance of rain. Mostly cloudy, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Des Moines WA
 47.39°N 122.32°W (Elev. 75 ft)
Last Update:
12:35 pm PDT Aug 28, 2026
Forecast Valid:
1pm PDT Aug 28, 2026-6pm PDT Sep 3, 2026
 
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Additional Resources

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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