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.

Clear

68°F

20°C

Humidity 56%
Wind Speed SSW 6 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 18 Sep 05:35 PM PDT
Extended Forecast for

4 Miles WSW Vashon WA

  • Tonight

    Tonight: Increasing clouds, with a low around 51. Southwest wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 64. Light southwest wind.

    High: 64 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51. North wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

  • 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 in the evening.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 65.

    High: 65 °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 65.

    High: 65 °F

    Partly Sunny

  • Tuesday Night

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

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 51. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 64. Light southwest wind.
Saturday Night
Mostly clear, with a low around 51. North wind around 5 mph becoming calm in the evening.
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 in the evening.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Partly sunny, with a high near 64.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 52.
Friday
A chance of rain. Partly sunny, with a high near 62.
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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:
1:27 pm PDT Sep 18, 2026
Forecast Valid:
5pm PDT Sep 18, 2026-6pm PDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

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