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.

Fog

32°F

0°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 32°F (0°C)
Visibility 0.24 mi
Last update 31 Dec 08:55 AM PST
Extended Forecast for

3 Miles E Newcastle WA

  • Today

    Today: Mostly sunny, with a high near 45. South southeast wind around 6 mph becoming calm in the morning.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 35. South southeast wind 6 to 9 mph.

    Low: 35 °F

    Increasing
    Clouds

  • New Year's Day

    New Year's Day: A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 43. Southeast wind 5 to 8 mph.

    High: 43 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 10pm. Cloudy, with a low around 39. East southeast wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain Likely

  • Friday

    Friday: Rain likely. Cloudy, with a high near 48. Southeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 48 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain Likely

  • Saturday

    Saturday: Rain. High near 48. Chance of precipitation is 80%.

    High: 48 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Rain

  • Sunday

    Sunday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 46.

    High: 46 °F

    Rain Likely

Detailed Forecast

Today
Mostly sunny, with a high near 45. South southeast wind around 6 mph becoming calm in the morning.
Tonight
Increasing clouds, with a low around 35. South southeast wind 6 to 9 mph.
New Year's Day
A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 43. Southeast wind 5 to 8 mph.
Thursday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 39. East southeast wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain likely. Cloudy, with a high near 48. Southeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 48. Chance of precipitation is 80%.
Saturday Night
Rain. Mostly cloudy, with a low around 41.
Sunday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 46.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 38.
Monday
A chance of rain. Mostly cloudy, with a high near 45.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 37.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 45.
Basemap Options
Click map to change the forecast location
Loading map...
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:
7:01 am PST Dec 31, 2025
Forecast Valid:
9am PST Dec 31, 2025-6pm PST Jan 6, 2026
 
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