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

Active Spring Like Pattern Across the Country

A frontal boundary will slowly move eastward and clear most of the eastern seaboard by Sunday. Showers and thunderstorms, some severe, will accompany this front alongside the threat of heavy rainfall; These threats may linger along the Gulf Coast states into early next week. Meanwhile, record spring-like warmth is forecast, mainly east of the Mississippi River, this weekend into next week. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

52°F

11°C

Humidity 87%
Wind Speed SSE 9 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 07 Mar 09:00 AM PST
Extended Forecast for

Mercer Island WA

  • Today

    Today: Rain likely, mainly between noon and 4pm. Mostly cloudy, with a high near 55. South southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain Likely

  • Tonight

    Tonight: Rain, mainly after midnight. Low around 47. South southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Chance Rain
    then Rain

  • Sunday

    Sunday: Rain. High near 53. South southwest wind 7 to 9 mph becoming west northwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely before 4am, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 36. South southwest wind around 6 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Monday

    Monday: Rain likely, possibly mixed with snow before 10am, then rain. High near 47. Southwest wind 6 to 8 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 47 °F

    Rain/Snow
    then Rain

  • Monday Night

    Monday Night: Rain and snow, becoming all snow after 4am. Low around 34. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow

  • Tuesday

    Tuesday: Snow before 7am, then rain, possibly mixed with snow between 7am and 1pm, then rain after 1pm. High near 47. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 47 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain. Cloudy, with a low around 39.

    Low: 39 °F

    Rain

  • Wednesday

    Wednesday: Rain. Cloudy, with a high near 50.

    High: 50 °F

    Rain

Detailed Forecast

Today
Rain likely, mainly between noon and 4pm. Mostly cloudy, with a high near 55. South southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly after midnight. Low around 47. South southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain. High near 53. South southwest wind 7 to 9 mph becoming west northwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain likely before 4am, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 36. South southwest wind around 6 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday
Rain likely, possibly mixed with snow before 10am, then rain. High near 47. Southwest wind 6 to 8 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
Rain and snow, becoming all snow after 4am. Low around 34. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tuesday
Snow before 7am, then rain, possibly mixed with snow between 7am and 1pm, then rain after 1pm. High near 47. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tuesday Night
Rain. Cloudy, with a low around 39.
Wednesday
Rain. Cloudy, with a high near 50.
Wednesday Night
Rain before 1am, then rain, possibly mixed with snow. Cloudy, with a low around 43.
Thursday
Rain, possibly mixed with snow. Cloudy, with a high near 50.
Thursday Night
Rain and snow. Cloudy, with a low around 40.
Friday
Rain and snow. Cloudy, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.56°N 122.21°W (Elev. 121 ft)
Last Update:
7:01 am PST Mar 7, 2026
Forecast Valid:
9am PST Mar 7, 2026-6pm PDT Mar 13, 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