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

43°F

6°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 04 Dec 02:35 AM PST
Extended Forecast for

Newcastle WA

  • Overnight

    Overnight: Rain likely, mainly between 3am and 4am. Cloudy, with a low around 39. South southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Rain Likely

  • Thursday

    Thursday: Rain, mainly before 3pm. High near 44. South wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Temperature rising to around 47 by 4am. South southeast wind 5 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F⇑

    Rain

  • Friday

    Friday: Rain. High near 52. Southwest wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain

  • Friday Night

    Friday Night: Rain. Low around 45. South southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Rain

  • Saturday

    Saturday: Rain. High near 49. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 46. Chance of precipitation is 90%.

    Low: 46 °F

    Rain

  • Sunday

    Sunday: Rain. Cloudy, with a high near 52.

    High: 52 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Rain

Detailed Forecast

Overnight
Rain likely, mainly between 3am and 4am. Cloudy, with a low around 39. South southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly before 3pm. High near 44. South wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Temperature rising to around 47 by 4am. South southeast wind 5 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 52. Southwest wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain. Low around 45. South southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 49. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain. Low around 46. Chance of precipitation is 90%.
Sunday
Rain. Cloudy, with a high near 52.
Sunday Night
Rain. Mostly cloudy, with a low around 46.
Monday
Rain. Cloudy, with a high near 52.
Monday Night
Rain. Cloudy, with a low around 47.
Tuesday
Rain. Cloudy, with a high near 52.
Tuesday Night
Rain. Cloudy, with a low around 45.
Wednesday
Rain. Cloudy, with a high near 51.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
1:25 am PST Dec 4, 2025
Forecast Valid:
2am PST Dec 4, 2025-6pm PST Dec 10, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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