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

59°F

15°C

Humidity 47%
Wind Speed SE 14 MPH
Barometer 29.61 in (1002.71 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 04 Nov 11:53 PM PST
Extended Forecast for

Mercer Island WASimilar City Names

  • Overnight

    Overnight: Rain, mainly before 3am. Low around 51. East southeast wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 61. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Rain

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 50. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers

  • Thursday

    Thursday: Rain. High near 57. South wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 47. South wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Rain

  • Friday

    Friday: Rain, mainly before 4pm. High near 54. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
Rain, mainly before 3am. Low around 51. East southeast wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain. High near 61. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 50. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain. High near 57. South wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 47. South wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain, mainly before 4pm. High near 54. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 42.
Saturday
Partly sunny, with a high near 57.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 46.
Sunday
A chance of rain, mainly after 10am. Mostly cloudy, with a high near 61.
Sunday Night
Rain likely. Mostly cloudy, with a low around 48.
Monday
Rain. Mostly cloudy, with a high near 56.
Monday Night
Rain likely. Mostly cloudy, with a low around 48.
Veterans Day
Rain likely. Mostly cloudy, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WASimilar City Names
 47.58°N 122.22°W (Elev. 118 ft)
Last Update:
7:00 pm PST Nov 4, 2025
Forecast Valid:
12am PST Nov 5, 2025-6pm PST Nov 11, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation