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

49°F

9°C

Humidity 92%
Wind Speed NNW 8 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 26 Nov 07:00 PM PST
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Rain. Low around 46. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Rain

  • Thanksgiving Day

    Thanksgiving Day: Rain. High near 52. East southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Rain

  • Thursday Night

    Thursday Night: Rain, mainly before 4am. Low around 44. East wind around 6 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Rain

  • Friday

    Friday: A 30 percent chance of rain before 10am. Partly sunny, with a high near 51. North wind 3 to 5 mph.

    High: 51 °F

    Chance Rain
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. Calm wind becoming east around 5 mph after midnight.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain. Mostly cloudy, with a high near 49.

    High: 49 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain. Low around 46. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thanksgiving Day
Rain. High near 52. East southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain, mainly before 4am. Low around 44. East wind around 6 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of rain before 10am. Partly sunny, with a high near 51. North wind 3 to 5 mph.
Friday Night
Mostly cloudy, with a low around 41. Calm wind becoming east around 5 mph after midnight.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 48.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
A slight chance of rain. Mostly cloudy, with a high near 48.
Monday Night
A chance of rain. Mostly cloudy, with a low around 42.
Tuesday
A chance of rain. Mostly cloudy, with a high near 49.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 39.
Wednesday
A slight chance of rain. 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:
7:00 pm PST Nov 26, 2025
Forecast Valid:
7pm PST Nov 26, 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