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.

Mostly Cloudy

48°F

9°C

Humidity 73%
Wind Speed S 11 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 24 Nov 03:07 PM PST
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: A 10 percent chance of rain after 4pm. Partly sunny, with a high near 46. South wind around 6 mph.

    High: 46 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 38. Light south southeast wind.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday

    Tuesday: Rain, mainly after 9am. High near 45. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 45 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 41. Southeast wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 49. Light east southeast wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 46. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Rain

  • Thanksgiving Day

    Thanksgiving Day: Rain. High near 52. Chance of precipitation is 90%.

    High: 52 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Rain Likely

  • Friday

    Friday: A chance of rain. Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

Detailed Forecast

This Afternoon
A 10 percent chance of rain after 4pm. Partly sunny, with a high near 46. South wind around 6 mph.
Tonight
A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 38. Light south southeast wind.
Tuesday
Rain, mainly after 9am. High near 45. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Low around 41. Southeast wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain. High near 49. Light east southeast wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 46. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thanksgiving Day
Rain. High near 52. Chance of precipitation is 90%.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.
Friday
A chance of rain. Mostly cloudy, with a high near 50.
Friday Night
A chance of rain. Mostly cloudy, with a low around 40.
Saturday
A chance of rain. Mostly cloudy, with a high near 48.
Saturday Night
A chance of rain and snow. Partly cloudy, with a low around 35.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 45.
Sunday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 36.
Monday
A chance of rain and snow. Partly sunny, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.52°N 122.17°W (Elev. 400 ft)
Last Update:
3:11 pm PST Nov 24, 2025
Forecast Valid:
3pm PST Nov 24, 2025-6pm PST Dec 1, 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