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 N 0 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 03 Dec 12:00 PM PST
Extended Forecast for

3 Miles E Newcastle WA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 41. Calm wind.

    High: 41 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 50 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 39. Calm wind becoming south around 6 mph after midnight.

    Low: 39 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain. High near 43. South southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 43 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 42. South southeast wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain Likely

  • Friday

    Friday: Rain. High near 49. South southwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Friday Night

    Friday Night: Rain. Low around 45. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Rain

  • Saturday

    Saturday: Rain. High near 48. Chance of precipitation is 90%.

    High: 48 °F

    Rain

  • Saturday Night

    Saturday Night: Rain likely. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Rain Likely

  • Sunday

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

    High: 50 °F

    Rain

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 41. Calm wind.
Tonight
A 50 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 39. Calm wind becoming south around 6 mph after midnight.
Thursday
Rain. High near 43. South southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely. Cloudy, with a low around 42. South southeast wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 49. South southwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain. Low around 45. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 48. Chance of precipitation is 90%.
Saturday Night
Rain likely. Mostly cloudy, with a low around 44.
Sunday
Rain. Cloudy, with a high near 50.
Sunday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.
Monday
Rain likely. Cloudy, with a high near 51.
Monday Night
Rain. Cloudy, with a low around 46.
Tuesday
Rain. Cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Newcastle WA
 47.53°N 122.11°W (Elev. 1237 ft)
Last Update:
7:00 am PST Dec 3, 2025
Forecast Valid:
12pm 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