National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Renton Municipal Airport (KRNT)

Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.

Mostly Cloudy

49°F

9°C

Humidity 86%
Wind Speed SE 3 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 09 Dec 05:53 AM PST
Extended Forecast for

Newcastle WA

Flood Warning until further notice
Flood Watch December 9, 06:06am until December 12, 04:00pm
Click here for hazard details and duration
Flood Warning until further notice
Flood Watch
  •  
    Flood Watch December 9, 06:06am until December 12, 04:00pm

    NOW until 4:00pm Fri

    Flood Watch

  • Today

    High: 47 °F

    Chance Rain
    then Rain
    Likely

  • Tonight

    Tonight: Rain. Patchy fog before midnight. Temperature rising to around 54 by 3am. Southwest wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 46 °F⇑

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Rain. High near 55. South southwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 55 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 49. South southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 49 °F

    Rain

  • Thursday

    Thursday: Rain. High near 52. South wind 6 to 8 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 likely, mainly before 10pm. Mostly cloudy, with a low around 47. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Rain Likely

  • Friday

    Friday: A 40 percent chance of rain. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

Detailed Forecast

Today
Rain likely, mainly after 1pm. Cloudy, with a steady temperature around 47. South southeast wind 3 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain. Patchy fog before midnight. Temperature rising to around 54 by 3am. Southwest wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
Rain. High near 55. South southwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday Night
Rain. Low around 49. South southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Thursday
Rain. High near 52. South wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 47. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 53.
Friday Night
A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 46.
Saturday
A chance of rain, mainly after 10am. Mostly cloudy, with a high near 53.
Saturday Night
Rain likely. Mostly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 51.
Sunday Night
Rain. Mostly cloudy, with a low around 46.
Monday
Rain. Cloudy, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
1:26 am PST Dec 9, 2025
Forecast Valid:
6am PST Dec 9, 2025-6pm PST Dec 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