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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

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

Mist

54°F

12°C

Humidity 93%
Wind Speed SW 3 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 52°F (11°C)
Visibility 5.00 mi
Last update 19 Sep 08:35 AM PDT
Extended Forecast for

4 Miles WSW Vashon WA

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 64. Calm wind.

    High: 64 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Increasing clouds, with a low around 51. North wind around 5 mph becoming calm after midnight.

    Low: 51 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 64. Calm wind becoming north around 6 mph in the afternoon.

    High: 64 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. North wind 5 to 7 mph becoming calm after midnight.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 63. Light and variable wind.

    High: 63 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

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

    Low: 51 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 64. Calm wind.
Tonight
Increasing clouds, with a low around 51. North wind around 5 mph becoming calm after midnight.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 64. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 50. North wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 63. Light and variable wind.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Mostly cloudy, with a high near 61.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Vashon WA
 47.43°N 122.52°W (Elev. 0 ft)
Last Update:
12:25 am PDT Sep 19, 2026
Forecast Valid:
8am PDT Sep 19, 2026-6pm PDT Sep 25, 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