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

Renton Municipal Airport (KRNT)

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

Overcast

46°F

8°C

Humidity 75%
Wind Speed NNW 3 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 03 Dec 01:35 PM PST
Extended Forecast for

2 Miles S Mercer Island WA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 45. Calm wind.

    High: 45 °F

    Mostly Cloudy

  • Tonight

    Tonight: Rain likely, mainly after 3am. Mostly cloudy, with a low around 41. Light south southeast wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Mostly Cloudy
    then Rain
    Likely

  • Thursday

    Thursday: Rain, mainly before 2pm. High near 47. South wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 47 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 45. South wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Rain

  • Friday

    Friday: Rain. High near 54. South southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Rain

  • Friday Night

    Friday Night: Rain. Low around 47. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Rain

  • Saturday

    Saturday: Rain. High near 52. Chance of precipitation is 90%.

    High: 52 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Cloudy, with a low around 48.

    Low: 48 °F

    Rain

  • Sunday

    Sunday: Rain. Cloudy, with a high near 54.

    High: 54 °F

    Rain

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 45. Calm wind.
Tonight
Rain likely, mainly after 3am. Mostly cloudy, with a low around 41. Light south southeast wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain, mainly before 2pm. High near 47. South wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 45. South wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 54. South southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain. Low around 47. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 52. Chance of precipitation is 90%.
Saturday Night
Rain. Cloudy, with a low around 48.
Sunday
Rain. Cloudy, with a high near 54.
Sunday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 48.
Monday
Rain. Cloudy, with a high near 55.
Monday Night
Rain. Cloudy, with a low around 49.
Tuesday
Rain. Cloudy, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Mercer Island WA
 47.53°N 122.23°W (Elev. 200 ft)
Last Update:
1:25 pm PST Dec 3, 2025
Forecast Valid:
1pm PST Dec 3, 2025-6pm PST Dec 9, 2025
 
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