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.

Partly Cloudy

53°F

12°C

Humidity 92%
Wind Speed S 3 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 19 Sep 02:53 AM PDT
Extended Forecast for

4 Miles SSE Vashon WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 73. Calm wind.

    High: 73 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 53. North wind around 5 mph becoming calm after midnight.

    Low: 53 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 72. Calm wind becoming north around 6 mph in the afternoon.

    High: 72 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. North wind 3 to 7 mph.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Tuesday Night

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

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 52. Calm wind.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 73. Calm wind.
Saturday Night
Increasing clouds, with a low around 53. North wind around 5 mph becoming calm after midnight.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 72. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 53. North wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
Mostly cloudy, with a low around 53.
Thursday
Mostly cloudy, with a high near 63.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Vashon WA
 47.4°N 122.42°W (Elev. 0 ft)
Last Update:
12:25 am PDT Sep 19, 2026
Forecast Valid:
3am PDT Sep 19, 2026-6pm PDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation