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

Hazardous Weather Conditions

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

light rain,mist

57°F

14°C

Humidity 93%
Wind Speed S 17 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 55°F (13°C)
Visibility 2.00 mi
Last update 10 Dec 06:20 PM PST
Extended Forecast for

Mercer Island WA

Flood Watch December 10, 06:33pm until December 12, 04:00pm
Wind Advisory December 10, 06:33pm until December 10, 10:00pm
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch December 10, 06:33pm until December 12, 04:00pm
    Wind Advisory December 10, 06:33pm until December 10, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 49 °F

    Rain

  • Thursday

    Thursday: Rain, mainly before 11am. High near 53. Light east wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 48. Calm wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Rain Likely

  • Friday

    Friday: A 40 percent chance of rain. Cloudy, with a high near 56. South southwest wind around 6 mph.

    High: 56 °F

    Chance Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 48. South wind around 5 mph.

    Low: 48 °F

    Chance Rain

  • Saturday

    Saturday: A 10 percent chance of rain after 4pm. Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Rain, mainly after 10pm. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Rain

  • Sunday

    Sunday: Rain. Mostly cloudy, with a high near 56.

    High: 56 °F

    Rain

Detailed Forecast

Tonight
Rain. Low around 49. South southwest wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Rain, mainly before 11am. High near 53. Light east wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 48. Calm wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 40 percent chance of rain. Cloudy, with a high near 56. South southwest wind around 6 mph.
Friday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 48. South wind around 5 mph.
Saturday
A 10 percent chance of rain after 4pm. Partly sunny, with a high near 57.
Saturday Night
Rain, mainly after 10pm. Low around 49. Chance of precipitation is 80%.
Sunday
Rain. Mostly cloudy, with a high near 56.
Sunday Night
Rain. Mostly cloudy, with a low around 50.
Monday
Rain. Cloudy, with a high near 57.
Monday Night
Rain. Cloudy, with a low around 46.
Tuesday
Rain. Cloudy, with a high near 52.
Tuesday Night
Rain. Cloudy, with a low around 43.
Wednesday
Rain. Cloudy, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.22°W (Elev. 118 ft)
Last Update:
1:25 pm PST Dec 10, 2025
Forecast Valid:
6pm PST Dec 10, 2025-6pm PST Dec 17, 2025
 
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