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

Severe Thunderstorms Likely in the Central U.S.; Flooding Possible for portions of Oklahoma/Texas/Arkansas and the Marianas.

Severe thunderstorms are likely from the southern Plains to the Midwest through Friday. Large hail, damaging winds, and tornadoes are all possible. An Enhanced (level 3 of 5) risk is in effect. Flash flooding is possible across portions of Oklahoma, Texas, and Arkansas on Friday. A Slight (level 2 of 4) risk is in effect. Flooding rain may impact Guam and the Marianas through next week. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Overcast

48°F

9°C

Humidity 79%
Wind Speed ENE 5 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 05 Mar 10:53 AM PST
Extended Forecast for

Mercer Island WA

  • Today

    Today: A 30 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 52. Light south southeast wind.

    High: 52 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly after midnight. Low around 44. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain. High near 52. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 10pm. Low around 49. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Rain then
    Rain Likely

  • Saturday

    Saturday: Rain likely, mainly before 10am. Cloudy, with a high near 55. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain likely. Cloudy, with a low around 48. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Rain Likely

  • Sunday

    Sunday: Rain. High near 54. Chance of precipitation is 90%.

    High: 54 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely before 4am, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Monday

    Monday: Rain likely, possibly mixed with snow before 10am, then rain. Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain/Snow
    then Rain

Detailed Forecast

Today
A 30 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 52. Light south southeast wind.
Tonight
Rain, mainly after midnight. Low around 44. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 52. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain, mainly before 10pm. Low around 49. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain likely, mainly before 10am. Cloudy, with a high near 55. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain likely. Cloudy, with a low around 48. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain. High near 54. Chance of precipitation is 90%.
Sunday Night
Rain likely before 4am, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 39.
Monday
Rain likely, possibly mixed with snow before 10am, then rain. Mostly cloudy, with a high near 48.
Monday Night
Rain and snow. Mostly cloudy, with a low around 35.
Tuesday
Rain and snow. Mostly cloudy, with a high near 48.
Tuesday Night
Rain, possibly mixed with snow. Mostly cloudy, with a low around 37.
Wednesday
Rain, possibly mixed with snow. Cloudy, with a high near 49.
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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:
7:01 am PST Mar 5, 2026
Forecast Valid:
11am PST Mar 5, 2026-6pm PDT Mar 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