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

51°F

11°C

Humidity 79%
Wind Speed S 9 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 09 Nov 09:53 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: Partly sunny, with a high near 64. South wind 3 to 5 mph.

    High: 64 °F

    Partly Sunny

  • Tonight

    Tonight: Rain, mainly after 3am. Low around 52. South southeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Slight Chance
    Rain then
    Rain

  • Monday

    Monday: Rain, mainly before 4pm. High near 57. South southwest wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Rain

  • Monday Night

    Monday Night: A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 45. South wind 3 to 5 mph.

    Low: 45 °F

    Chance Rain
    then Slight
    Chance Rain

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain. Mostly cloudy, with a high near 58.

    High: 58 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely. Cloudy, with a low around 49.

    Low: 49 °F

    Rain Likely

  • Thursday

    Thursday: Rain. Cloudy, with a high near 55.

    High: 55 °F

    Rain

Detailed Forecast

Today
Partly sunny, with a high near 64. South wind 3 to 5 mph.
Tonight
Rain, mainly after 3am. Low around 52. South southeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain, mainly before 4pm. High near 57. South southwest wind around 6 mph. Chance of precipitation is 80%. 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 45. South wind 3 to 5 mph.
Veterans Day
Partly sunny, with a high near 54. Light and variable wind.
Tuesday Night
Mostly cloudy, with a low around 45.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 58.
Wednesday Night
Rain likely. Cloudy, with a low around 49.
Thursday
Rain. Cloudy, with a high near 55.
Thursday Night
Rain likely. Mostly cloudy, with a low around 43.
Friday
Rain likely. Mostly cloudy, with a high near 52.
Friday Night
Rain likely. Mostly cloudy, with a low around 45.
Saturday
Rain. Mostly cloudy, with a high near 52.
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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 am PST Nov 9, 2025
Forecast Valid:
10am PST Nov 9, 2025-6pm PST Nov 15, 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