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.

Clear

54°F

12°C

Humidity 66%
Wind Speed NNW 8 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 08 Nov 04:00 PM PST
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. East southeast wind 6 to 9 mph.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 63. South wind 3 to 6 mph.

    High: 63 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of rain after 10pm. Mostly cloudy, with a low around 51. South southeast wind 7 to 9 mph.

    Low: 51 °F

    Chance Rain

  • Monday

    Monday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 56. South southwest wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Rain Likely

  • Monday Night

    Monday Night: A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 43. South southwest wind 3 to 5 mph.

    Low: 43 °F

    Chance Rain
    then Slight
    Chance Rain

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 10am. Mostly cloudy, with a high near 58.

    High: 58 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 10pm. Cloudy, with a low around 48.

    Low: 48 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 48. East southeast wind 6 to 9 mph.
Sunday
Partly sunny, with a high near 63. South wind 3 to 6 mph.
Sunday Night
A 40 percent chance of rain after 10pm. Mostly cloudy, with a low around 51. South southeast wind 7 to 9 mph.
Monday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 56. South southwest wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 43. South southwest wind 3 to 5 mph.
Veterans Day
Partly sunny, with a high near 52.
Tuesday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 43.
Wednesday
A chance of rain, mainly after 10am. Mostly cloudy, with a high near 58.
Wednesday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 48.
Thursday
Rain. Cloudy, with a high near 55.
Thursday Night
Rain. Mostly cloudy, with a low around 44.
Friday
Rain likely. Mostly cloudy, with a high near 52.
Friday Night
Rain likely. Mostly cloudy, with a low around 44.
Saturday
Rain likely. Mostly cloudy, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
1:25 pm PST Nov 8, 2025
Forecast Valid:
4pm PST Nov 8, 2025-6pm PST Nov 15, 2025
 
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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