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

48°F

9°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 02 Nov 06:20 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: A 20 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 55. South southwest wind 3 to 7 mph.

    High: 55 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: A 10 percent chance of rain after 4am. Cloudy, with a low around 44. Calm wind becoming northeast around 5 mph after midnight.

    Low: 44 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: A 30 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 54. North northeast wind 3 to 5 mph.

    High: 54 °F

    Chance Rain

  • Monday Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 44. Calm wind becoming east around 5 mph after midnight.

    Low: 44 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 57. East southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain. Low around 50. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 59. Chance of precipitation is 100%.

    High: 59 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Cloudy, with a low around 50.

    Low: 50 °F

    Rain

  • Thursday

    Thursday: Rain. Cloudy, with a high near 57.

    High: 57 °F

    Rain

Detailed Forecast

Today
A 20 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 55. South southwest wind 3 to 7 mph.
Tonight
A 10 percent chance of rain after 4am. Cloudy, with a low around 44. Calm wind becoming northeast around 5 mph after midnight.
Monday
A 30 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 54. North northeast wind 3 to 5 mph.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44. Calm wind becoming east around 5 mph after midnight.
Tuesday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 57. East southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain. Low around 50. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain. High near 59. Chance of precipitation is 100%.
Wednesday Night
Rain. Cloudy, with a low around 50.
Thursday
Rain. Cloudy, with a high near 57.
Thursday Night
Rain. Cloudy, with a low around 48.
Friday
Rain. Mostly cloudy, with a high near 55.
Friday Night
A chance of rain. Mostly cloudy, with a low around 44.
Saturday
A chance of rain. Mostly cloudy, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.56°N 122.18°W (Elev. 207 ft)
Last Update:
3:16 am PST Nov 2, 2025
Forecast Valid:
6am PST Nov 2, 2025-6pm PST Nov 8, 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