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

Lake Effect Snow in the Lower Great Lakes; Unsettled Pattern in the Pacific Northwest

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. Lake Effect Snow Warnings have been issued. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest this afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.

Overcast

53°F

12°C

Humidity 56%
Wind Speed SSW 4 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 12 Feb 04:53 PM PST
Extended Forecast for

Mercer Island WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 42. South wind around 6 mph.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: Rain, mainly after noon. High near 49. South southwest 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. Low around 40. South wind 3 to 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain

  • Saturday

    Saturday: A 50 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 47. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 47 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 35. North wind 3 to 5 mph.

    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 30 percent chance of snow after 4am. Partly cloudy, with a low around 34. Little or no snow accumulation expected.

    Low: 34 °F

    Mostly Clear
    then Chance
    Snow

  • Washington's Birthday

    Washington's Birthday: A chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 47.

    High: 47 °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 36.

    Low: 36 °F

    Rain Likely
    then Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 42. South wind around 6 mph.
Friday
Rain, mainly after noon. High near 49. South southwest wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain. Low around 40. South wind 3 to 5 mph. Chance of precipitation is 90%. 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 47. Calm wind becoming north northwest around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 35. North wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
A 30 percent chance of snow after 4am. Partly cloudy, with a low around 34. Little or no snow accumulation expected.
Washington's Birthday
A chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 47.
Monday Night
Rain likely before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 36.
Tuesday
A chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 45.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 35.
Wednesday
Rain and snow likely. Mostly cloudy, with a high near 44.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 35.
Thursday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.56°N 122.21°W (Elev. 121 ft)
Last Update:
1:26 pm PST Feb 12, 2026
Forecast Valid:
5pm PST Feb 12, 2026-6pm PST Feb 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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