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

Tracking Winter Storm and Severe Weather Impacts Through This Weekend

Heavy mountain snow will continue into Thursday afternoon across the Cascades. Two fast moving storms will track from the southern Rockies to the Great Lakes Thursday and then Friday into Sunday with areas of gusty winds, and heavy snow. In the Southeast U.S., severe thunderstorms and heavy to excessive rainfall are forecast on Friday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Mostly Cloudy

41°F

5°C

Humidity 80%
Wind Speed S 4 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 08 Jan 03:15 AM PST
Extended Forecast for

Mercer Island WA

  • Overnight

    Overnight: Showers likely. Mostly cloudy, with a low around 36. South wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of rain and snow showers before 10am, then rain showers likely. Increasing clouds, with a high near 44. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 44 °F

    Chance
    Rain/Snow
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly between 8pm and 4am. Mostly cloudy, with a low around 41. South wind around 6 mph.

    Low: 41 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before 10am. Mostly cloudy, with a high near 49. South wind around 6 mph.

    High: 49 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38. Southeast wind 3 to 5 mph.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

  • Sunday

    Sunday: Rain likely. Mostly cloudy, with a high near 50.

    High: 50 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain likely. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Rain Likely

Detailed Forecast

Overnight
Showers likely. Mostly cloudy, with a low around 36. South wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of rain and snow showers before 10am, then rain showers likely. Increasing clouds, with a high near 44. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday Night
A 50 percent chance of showers, mainly between 8pm and 4am. Mostly cloudy, with a low around 41. South wind around 6 mph.
Friday
A 20 percent chance of showers before 10am. Mostly cloudy, with a high near 49. South wind around 6 mph.
Friday Night
Mostly cloudy, with a low around 38. Southeast wind 3 to 5 mph.
Saturday
Mostly cloudy, with a high near 50.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 41.
Sunday
Rain likely. Mostly cloudy, with a high near 50.
Sunday Night
Rain likely. Mostly cloudy, with a low around 45.
Monday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 53.
Monday Night
A chance of rain. Mostly cloudy, with a low around 48.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 44.
Wednesday
A slight chance of rain. Partly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.56°N 122.18°W (Elev. 207 ft)
Last Update:
1:25 am PST Jan 8, 2026
Forecast Valid:
3am PST Jan 8, 2026-6pm PST Jan 14, 2026
 
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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