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

Hazardous Spring Weather Shifts to the Eastern and Northwest U.S. Wednesday

Isolated to scattered severe thunderstorms are expected Wednesday from the ArkLaTex and Lower Mississippi Valley northeastward through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat from east Texas into Upstate New York. A moderate atmospheric river will bring heavy snow and high winds to the Northwest U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Rain

43°F

6°C

Humidity 81%
Wind Speed SSW 11 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 11 Mar 01:20 AM PDT
Extended Forecast for

Mercer Island WA

Wind Advisory March 11, 03:00pm until March 12, 06:00am
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Rain, mainly before 5am. Low around 40. South wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Rain

  • Wednesday

    Wednesday: Rain, mainly after 7am. High near 52. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 41. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain. High near 46. South southwest wind 8 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 37. South wind 3 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain

  • Friday

    Friday: Rain, possibly mixed with snow, becoming all rain after 11am. High near 43. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow
    then Rain

  • Friday Night

    Friday Night: Rain before 11pm, then rain likely, possibly mixed with snow. Low around 36. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain/Snow

  • Saturday

    Saturday: Rain likely, possibly mixed with snow before 11am, then a chance of rain. Mostly cloudy, with a high near 47.

    High: 47 °F

    Rain/Snow
    Likely then
    Chance Rain

  • Saturday Night

    Saturday Night: A slight chance of rain and snow. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain/Snow

Detailed Forecast

Overnight
Rain, mainly before 5am. Low around 40. South wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly after 7am. High near 52. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain. Low around 41. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain. High near 46. South southwest wind 8 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain. Low around 37. South wind 3 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Rain, possibly mixed with snow, becoming all rain after 11am. High near 43. Chance of precipitation is 100%. Little or no snow accumulation expected.
Friday Night
Rain before 11pm, then rain likely, possibly mixed with snow. Low around 36. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday
Rain likely, possibly mixed with snow before 11am, then a chance of rain. Mostly cloudy, with a high near 47.
Saturday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 34.
Sunday
A chance of rain and snow before 11am, then rain likely. Cloudy, with a high near 48.
Sunday Night
Rain. Cloudy, with a low around 41.
Monday
Rain likely. Cloudy, with a high near 56.
Monday Night
Rain likely. Mostly cloudy, with a low around 45.
Tuesday
Rain likely. Mostly cloudy, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.22°W (Elev. 118 ft)
Last Update:
8:01 pm PDT Mar 10, 2026
Forecast Valid:
1am PDT Mar 11, 2026-6pm PDT Mar 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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