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

61°F

16°C

Humidity 82%
Wind Speed WNW 3 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 18 Aug 01:20 AM PDT
Extended Forecast for

Seatac WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. Light and variable wind becoming west southwest around 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 78. South southwest wind around 6 mph.

    High: 78 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 57. South southwest wind around 6 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 77. South southwest wind around 5 mph becoming northwest in the afternoon.

    High: 77 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57. North wind 3 to 5 mph.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °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 78.

    High: 78 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. Light and variable wind becoming west southwest around 5 mph.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 78. South southwest wind around 6 mph.
Tuesday Night
Increasing clouds, with a low around 57. South southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 77. South southwest wind around 5 mph becoming northwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 57. North wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 58.
Friday
Partly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 57.
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.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Seatac WA
 47.44°N 122.3°W (Elev. 358 ft)
11:26 pm PDT Aug 17, 2026
1am PDT Aug 18, 2026-6pm PDT Aug 24, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database