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

Dangerous Cold and Gusty Winds Anticipated This Weekend

A significant arctic outbreak will bring frigid temperatures and dangerously cold wind chills to the Northeast and Mid-Atlantic this weekend. Strong winds which could produce tree damage and power outages, and periods of snow squalls are also possible. Relief from this cold and a warming trend is forecast to commence by the beginning to middle of next week. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Clear

54°F

12°C

Humidity 69%
Wind Speed NW 4 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 05 Feb 01:53 PM PST
Extended Forecast for

Mercer Island WA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 61. Calm wind.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Light south southeast wind.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 60. Light south wind.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of rain after 4am. Increasing clouds, with a low around 46. Light south wind.

    Low: 46 °F

    Partly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: Rain, mainly after 10am. High near 55. South southeast wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 55 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 48. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Rain

  • Sunday

    Sunday: Rain. High near 53. Chance of precipitation is 80%.

    High: 53 °F

    Rain

  • Sunday Night

    Sunday Night: Rain, mainly before 10pm. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain

  • Monday

    Monday: Rain likely, mainly after 10am. Mostly cloudy, with a high near 51.

    High: 51 °F

    Rain Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 61. Calm wind.
Tonight
Partly cloudy, with a low around 42. Light south southeast wind.
Friday
Mostly sunny, with a high near 60. Light south wind.
Friday Night
A 30 percent chance of rain after 4am. Increasing clouds, with a low around 46. Light south wind.
Saturday
Rain, mainly after 10am. High near 55. South southeast wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain. Low around 48. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 53. Chance of precipitation is 80%.
Sunday Night
Rain, mainly before 10pm. Mostly cloudy, with a low around 43.
Monday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 51.
Monday Night
A chance of rain. Mostly cloudy, with a low around 41.
Tuesday
A chance of rain. Mostly cloudy, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A slight chance of rain. Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.6°N 122.22°W (Elev. 3 ft)
Last Update:
1:26 pm PST Feb 5, 2026
Forecast Valid:
2pm PST Feb 5, 2026-6pm PST Feb 11, 2026
 
Forecast Discussion
 
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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