Thunderstorms and Heavy Rains in the Appalachians

Multiple rounds of moderate to locally heavy rain will impact portions of the Appalachians and Mid-Atlantic, which may lead to flash flooding concerns. Thunderstorms with isolated severe wind gusts will be possible this afternoon from parts of the Southeast into the southern and central Appalachians. A multi-day heavy rain will pose a flash flood threat in New Mexico beginning Tuesday. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

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

Mostly Cloudy

58°F

14°C

Humidity 83%
Wind Speed SW 4 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 21 Sep 10:53 AM PDT
Extended Forecast for

Seattle-Tacoma International Airport WA

  • Today

    Today: Partly sunny, with a high near 70. West wind around 5 mph becoming calm  in the afternoon.

    High: 70 °F

    Partly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 54. Light east northeast wind.

    Low: 54 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A 20 percent chance of rain before 9am.  Cloudy, then gradually becoming mostly sunny, with a high near 69. Light and variable wind becoming south southwest around 6 mph in the morning.

    High: 69 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53. South wind 5 to 8 mph.

    Low: 53 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 67. South wind 5 to 7 mph becoming west southwest in the afternoon.

    High: 67 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after 11am.  Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely.  Cloudy, with a low around 52.

    Low: 52 °F

    Rain Likely

  • Friday

    Friday: A chance of rain.  Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance Rain

Detailed Forecast

Today
Partly sunny, with a high near 70. West wind around 5 mph becoming calm in the afternoon.
Tonight
Increasing clouds, with a low around 54. Light east northeast wind.
Tuesday
A 20 percent chance of rain before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 69. Light and variable wind becoming south southwest around 6 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 53. South wind 5 to 8 mph.
Wednesday
Partly sunny, with a high near 67. South wind 5 to 7 mph becoming west southwest in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
A 30 percent chance of rain after 11am. Mostly cloudy, with a high near 62.
Thursday Night
Rain likely. Cloudy, with a low around 52.
Friday
A chance of rain. Mostly cloudy, with a high near 62.
Friday Night
A chance of rain before 11pm. Mostly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 49.
Sunday
A slight chance of rain. Partly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Seattle-Tacoma International Airport WA
 47.46°N 122.31°W (Elev. 400 ft)
12:30 am PDT Sep 21, 2026
11am PDT Sep 21, 2026-6pm PDT Sep 27, 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