Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

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

Clear

64°F

18°C

Humidity 77%
Wind Speed WSW 3 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 18 Aug 12:20 AM PDT
Extended Forecast for

Des Moines WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. Light and variable wind.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 80. Southwest wind 3 to 6 mph.

    High: 80 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 57. West southwest wind around 6 mph becoming calm  after midnight.

    Low: 57 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 79. Light and variable wind becoming west around 5 mph in the afternoon.

    High: 79 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57. Light north wind.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. Light and variable wind.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 80. Southwest wind 3 to 6 mph.
Tuesday Night
Increasing clouds, with a low around 57. West southwest wind around 6 mph becoming calm after midnight.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 79. Light and variable wind becoming west around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 57. Light north wind.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 58.
Friday
Partly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly cloudy, with a high near 71.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Des Moines WA
 47.39°N 122.32°W (Elev. 75 ft)
11:26 pm PDT Aug 17, 2026
12am PDT Aug 18, 2026-6pm PDT Aug 24, 2026
 
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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