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

Tropical Moisture Will Bring Heavy to Excessive Rainfall with Possible Flooding This Week

Tropical moisture will surge over the southwest into the central U.S. this week with several days of heavy to excessive rainfall which may bring limited to considerable flooding. Isolated severe thunderstorm gusts and a couple of tornadoes will be possible from southeast New Mexico into west Texas. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

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

Overcast

55°F

13°C

Humidity 87%
Wind Speed SSW 18 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 29 Sep 01:05 AM PDT
Extended Forecast for

Seattle-Tacoma International Airport WA

  • Overnight

    Overnight: Rain likely, mainly after 5am. Cloudy, with a low around 55. South southwest wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain. High near 61. South southwest wind 8 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Rain

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 50. Calm wind becoming east northeast 5 to 7 mph in the evening.

    Low: 50 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63. North wind 5 to 8 mph.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 50. North northeast wind around 7 mph.

    Low: 50 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Thursday Night

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

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Overnight
Rain likely, mainly after 5am. Cloudy, with a low around 55. South southwest wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 61. South southwest wind 8 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 40 percent chance of rain, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 50. Calm wind becoming east northeast 5 to 7 mph in the evening.
Wednesday
Mostly sunny, with a high near 63. North wind 5 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 50. North northeast wind around 7 mph.
Thursday
Mostly cloudy, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Mostly cloudy, with a high near 66.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Partly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Seattle-Tacoma International Airport WA
 47.46°N 122.31°W (Elev. 400 ft)
Last Update:
11:26 pm PDT Sep 28, 2026
Forecast Valid:
1am PDT Sep 29, 2026-6pm PDT Oct 5, 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