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

Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Overcast

37°F

3°C

Humidity 92%
Wind Speed SE 6 MPH
Barometer 29.64 in (1003.73 mb)
Dewpoint 35°F (2°C)
Visibility 8.00 mi
Wind Chill32°F (0°C)
Last update 18 Feb 02:53 AM PST
Extended Forecast for

Mercer Island WA

  • Overnight

    Overnight: A chance of rain showers before 4am, then a chance of rain and snow showers. Mostly cloudy, with a low around 35. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 35 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain and snow showers before 1pm, then rain showers likely. Mostly cloudy, with a high near 44. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 44 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: A chance of rain showers, possibly mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 33. Light and variable wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 42. North wind around 7 mph.

    High: 42 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. Light and variable wind.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of snow between 10am and 1pm, then a slight chance of rain after 1pm. Partly sunny, with a high near 45. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Friday Night

    Friday Night: A slight chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 36. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 36 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
A chance of rain showers before 4am, then a chance of rain and snow showers. Mostly cloudy, with a low around 35. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday
A chance of rain and snow showers before 1pm, then rain showers likely. Mostly cloudy, with a high near 44. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
A chance of rain showers, possibly mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 33. Light and variable wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday
Mostly sunny, with a high near 42. North wind around 7 mph.
Thursday Night
Partly cloudy, with a low around 30. Light and variable wind.
Friday
A slight chance of snow between 10am and 1pm, then a slight chance of rain after 1pm. Partly sunny, with a high near 45. Chance of precipitation is 20%.
Friday Night
A slight chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 36. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 50.
Saturday Night
A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 42.
Sunday
Rain, mainly after 10am. Mostly cloudy, with a high near 54.
Sunday Night
Rain. Mostly cloudy, with a low around 42.
Monday
Rain. Mostly cloudy, with a high near 51.
Monday Night
Rain likely. Mostly cloudy, with a low around 40.
Tuesday
Rain likely. Mostly cloudy, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.25°W (Elev. 105 ft)
Last Update:
1:26 am PST Feb 18, 2026
Forecast Valid:
3am PST Feb 18, 2026-6pm PST Feb 24, 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