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

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Overcast

45°F

7°C

Humidity 81%
Wind Speed SE 8 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 13 Feb 02:00 AM PST
Extended Forecast for

Mercer Island WA

  • Overnight

    Overnight: A 10 percent chance of rain after 4am. Cloudy, with a low around 43. South wind around 5 mph.

    Low: 43 °F

    Slight Chance
    Rain

  • Friday

    Friday: Rain, mainly after 1pm. High near 49. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Chance Rain
    then Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 40. South wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain Likely
    then Chance
    Rain

  • Saturday

    Saturday: A 50 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 48. Light west southwest wind.

    High: 48 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 35. Light north wind.

    Low: 35 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of rain and snow after 4am. Mostly cloudy, with a low around 36. Chance of precipitation is 10%.

    Low: 36 °F

    Partly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Washington's Birthday

    Washington's Birthday: A slight chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 46.

    High: 46 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain likely before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Rain Likely
    then Chance
    Rain/Snow

Detailed Forecast

Overnight
A 10 percent chance of rain after 4am. Cloudy, with a low around 43. South wind around 5 mph.
Friday
Rain, mainly after 1pm. High near 49. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 40. South wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A 50 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 48. Light west southwest wind.
Saturday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 35. Light north wind.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
A slight chance of rain and snow after 4am. Mostly cloudy, with a low around 36. Chance of precipitation is 10%.
Washington's Birthday
A slight chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 46.
Monday Night
Rain likely before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 37.
Tuesday
A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 47.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 36.
Wednesday
Rain and snow likely. Mostly cloudy, with a high near 48.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 37.
Thursday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 45.
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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:
1:26 am PST Feb 13, 2026
Forecast Valid:
2am PST Feb 13, 2026-6pm PST Feb 19, 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