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.

Overcast

58°F

14°C

Humidity 90%
Wind Speed N 0 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 30 Sep 02:53 AM PDT
Extended Forecast for

2 Miles SSW Mercer Island WA

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 58. South southeast wind around 6 mph.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Rain, mainly after 3pm. High near 68. Southeast wind 6 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Mostly Sunny
    then Rain

  • Tuesday Night

    Tuesday Night: Rain before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Low around 56. South wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Showers

  • Wednesday

    Wednesday: Rain likely, then showers and possibly a thunderstorm after 11am. High near 65. South wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm, then rain after 8pm. Low around 55. South wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers

  • Thursday

    Thursday: Rain before 5pm, then a chance of showers and thunderstorms after 5pm. High near 62. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of rain, mainly between 8pm and 11pm. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    Showers then
    Slight Chance
    Rain

  • Friday

    Friday: A slight chance of rain. Partly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 58. South southeast wind around 6 mph.
Tuesday
Rain, mainly after 3pm. High near 68. Southeast wind 6 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Low around 56. South wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain likely, then showers and possibly a thunderstorm after 11am. High near 65. South wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm, then rain after 8pm. Low around 55. South wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Rain before 5pm, then a chance of showers and thunderstorms after 5pm. High near 62. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of rain, mainly between 8pm and 11pm. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Friday
A slight chance of rain. Partly sunny, with a high near 63.
Friday Night
A chance of rain. Mostly cloudy, with a low around 54.
Saturday
A slight chance of rain before 11am. Partly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Mercer Island WA
 47.55°N 122.24°W (Elev. 3 ft)
Last Update:
2:25 am PDT Sep 30, 2025
Forecast Valid:
3am PDT Sep 30, 2025-6pm PDT Oct 6, 2025
 
Forecast Discussion
 
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Additional Resources

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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