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 87%
Wind Speed SW 4 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 23 Nov 09:15 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: Rain likely, mainly before noon. Cloudy, with a high near 51. South southwest wind around 6 mph becoming northeast in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain Likely
    then Slight
    Chance Rain

  • Tonight

    Tonight: A 40 percent chance of rain before 3am. Cloudy, then gradually becoming partly cloudy, with a low around 40. South wind 3 to 5 mph.

    Low: 40 °F

    Chance Rain

  • Monday

    Monday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 47. South wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Rain Likely

  • Monday Night

    Monday Night: A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 38. Light southeast wind.

    Low: 38 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 46. Light east northeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain. Low around 42. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 50. Chance of precipitation is 90%.

    High: 50 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Rain

  • Thanksgiving Day

    Thanksgiving Day: Rain. Mostly cloudy, with a high near 53.

    High: 53 °F

    Rain

Detailed Forecast

Today
Rain likely, mainly before noon. Cloudy, with a high near 51. South southwest wind around 6 mph becoming northeast in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
A 40 percent chance of rain before 3am. Cloudy, then gradually becoming partly cloudy, with a low around 40. South wind 3 to 5 mph.
Monday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 47. South wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 38. Light southeast wind.
Tuesday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 46. Light east northeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain. Low around 42. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain. High near 50. Chance of precipitation is 90%.
Wednesday Night
Rain. Mostly cloudy, with a low around 46.
Thanksgiving Day
Rain. Mostly cloudy, with a high near 53.
Thursday Night
Rain likely. Mostly cloudy, with a low around 45.
Friday
Rain likely. Mostly cloudy, with a high near 51.
Friday Night
A chance of rain. Mostly cloudy, with a low around 40.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.54°N 122.17°W (Elev. 397 ft)
Last Update:
7:01 am PST Nov 23, 2025
Forecast Valid:
9am PST Nov 23, 2025-6pm PST Nov 29, 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