Major Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold in the North-Central U.S.

A large, long-duration winter storm is expected to bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies/Plains into the Mid-South beginning Friday, spreading eastward to the Mid-Atlantic and New England this weekend. An Arctic front will bring frigid temperatures and gusty winds that will lead to dangerous wind chills from the Northern Plains and Upper Midwest. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

Lat: 47.54548°NLon: 122.3147°WElev: 20.0ft.

Clear

41°F

5°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 22 Jan 04:10 PM PST
Extended Forecast for

Mercer Island WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 47. Calm wind becoming north around 5 mph in the afternoon.

    High: 47 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29. Light northeast wind.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 46. Calm wind.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 31. Calm wind.
Friday
Sunny, with a high near 47. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 29. Light northeast wind.
Saturday
Sunny, with a high near 46. Calm wind.
Saturday Night
Mostly clear, with a low around 28. Calm wind.
Sunday
Mostly sunny, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 31.
Monday
Mostly cloudy, with a high near 47.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Mostly cloudy, with a high near 50.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 40.
Wednesday
A chance of rain. Mostly cloudy, with a high near 51.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 42.
Thursday
A chance of rain. Mostly cloudy, with a high near 53.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.6°N 122.22°W (Elev. 3 ft)
1:26 pm PST Jan 22, 2026
4pm PST Jan 22, 2026-6pm PST Jan 29, 2026
 
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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