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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

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

Clear

57°F

14°C

Humidity 87%
Wind Speed S 6 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Sep 02:35 AM PDT
Extended Forecast for

3 Miles NNW Vashon WA

  • Overnight

    Overnight: Mostly clear, with a low around 54. Calm wind becoming south around 6 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 69. South wind around 8 mph.

    High: 69 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 52. South southwest wind 3 to 7 mph.

    Low: 52 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 68. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 68 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. North wind 5 to 7 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Calm wind becoming south around 6 mph.
Friday
Partly sunny, then gradually becoming sunny, with a high near 69. South wind around 8 mph.
Friday Night
Increasing clouds, with a low around 52. South southwest wind 3 to 7 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 68. Calm wind becoming west northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 52. North wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 53.
Monday
Mostly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly cloudy, with a high near 62.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Mostly cloudy, with a high near 61.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Partly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Vashon WA
 47.48°N 122.47°W (Elev. 203 ft)
Last Update:
11:26 pm PDT Sep 17, 2026
Forecast Valid:
2am PDT Sep 18, 2026-6pm PDT Sep 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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