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

Lake-Effect Snow through Friday; Strong Winds in the Northern and Central Plains

A clipper-like system will drop down from Canada on Thursday, bringing wintry weather from the Upper Midwest to the Great Lakes through Friday. This system is expected to bring strong northerly winds to much of the northern and central High Plains Thursday afternoon through Friday, with gusts up to 60 mph expected. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Overcast

50°F

10°C

Humidity 86%
Wind Speed N 3 MPH
Barometer 30.54 in (1034.2 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 15 Jan 12:53 AM PST
Extended Forecast for

Mercer Island WA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 48. North wind 3 to 5 mph.

    Low: 48 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy dense fog between 9am and 10am. Otherwise, partly sunny, with a high near 51. North wind 6 to 8 mph.

    High: 51 °F

    Patchy Dense
    Fog then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. North northeast wind around 6 mph.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 52. North northeast wind around 6 mph.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. Northeast wind 3 to 5 mph.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 48. North wind 3 to 5 mph.
Thursday
Patchy dense fog between 9am and 10am. Otherwise, partly sunny, with a high near 51. North wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 41. North northeast wind around 6 mph.
Friday
Sunny, with a high near 52. North northeast wind around 6 mph.
Friday Night
Mostly clear, with a low around 40. Northeast wind 3 to 5 mph.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 51.
Sunday Night
Mostly clear, with a low around 38.
M.L.King Day
Sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Patchy fog. Otherwise, mostly cloudy, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.25°W (Elev. 105 ft)
Last Update:
7:01 pm PST Jan 14, 2026
Forecast Valid:
1am PST Jan 15, 2026-6pm PST Jan 21, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation