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

Boeing Field - King County International Airport (KBFI)

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

Clear

55°F

13°C

Humidity 71%
Wind Speed S 5 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 Jun 08:05 AM PDT
Extended Forecast for

Mercer Island WA

  • Today

    Today: Mostly sunny, with a high near 72. South southwest wind around 6 mph.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 3am. Increasing clouds, with a low around 58. South wind around 6 mph.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 11am. Partly sunny, with a high near 68. South southwest wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Showers
    Likely then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 52. West wind 5 to 8 mph becoming calm in the evening.

    Low: 52 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 67. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 67 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 11am. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers, mainly before 11am. Mostly cloudy, with a high near 60.

    High: 60 °F

    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 72. South southwest wind around 6 mph.
Tonight
A 20 percent chance of showers after 3am. Increasing clouds, with a low around 58. South wind around 6 mph.
Wednesday
Showers likely, mainly before 11am. Partly sunny, with a high near 68. South southwest wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 52. West wind 5 to 8 mph becoming calm in the evening.
Juneteenth
Partly sunny, with a high near 67. Calm wind becoming north northwest around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 53.
Friday
Showers likely, mainly after 11am. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
Friday Night
Showers likely. Mostly cloudy, with a low around 51.
Saturday
Showers, mainly before 11am. Mostly cloudy, with a high near 60.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 53.
Sunday
A chance of showers. Partly sunny, with a high near 67.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 54.
Monday
A slight chance of showers. Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.25°W (Elev. 105 ft)
Last Update:
3:40 am PDT Jun 17, 2025
Forecast Valid:
8am PDT Jun 17, 2025-6pm PDT Jun 23, 2025
 
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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