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

52°F

11°C

Humidity 81%
Wind Speed NW 6 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 27 Nov 02:00 PM PST
Extended Forecast for

Newcastle WA

  • Thanksgiving Day

    Thanksgiving Day: Rain. High near 52. Southeast wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain

  • Tonight

    Tonight: Rain before 3am, then a slight chance of rain after 4am. Low around 43. East wind around 6 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Rain then
    Rain Likely

  • Friday

    Friday: Sunny, with a high near 51. East northeast wind around 5 mph becoming north in the afternoon.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. East wind 3 to 5 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after 10am. Mostly cloudy, with a high near 48. East wind around 5 mph.

    High: 48 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of rain. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

Detailed Forecast

Thanksgiving Day
Rain. High near 52. Southeast wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain before 3am, then a slight chance of rain after 4am. Low around 43. East wind around 6 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Sunny, with a high near 51. East northeast wind around 5 mph becoming north in the afternoon.
Friday Night
Mostly cloudy, with a low around 40. East wind 3 to 5 mph.
Saturday
A 30 percent chance of rain after 10am. Mostly cloudy, with a high near 48. East wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
A chance of rain. Mostly cloudy, with a high near 47.
Monday Night
Rain likely, mainly between 10pm and 4am. Mostly cloudy, with a low around 41.
Tuesday
A chance of rain. Mostly cloudy, with a high near 48.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.52°N 122.17°W (Elev. 400 ft)
Last Update:
1:25 pm PST Nov 27, 2025
Forecast Valid:
2pm PST Nov 27, 2025-6pm PST Dec 3, 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