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.

light rain,mist

57°F

14°C

Humidity 96%
Wind Speed S 8 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 56°F (13°C)
Visibility 3.00 mi
Last update 10 Dec 09:39 PM PST
Extended Forecast for

Newcastle WA

Flood Warning until further notice
Flood Watch December 10, 09:51pm until December 12, 04:00pm
Click here for hazard details and duration
Flood Warning until further notice
Flood Watch
  •  
    Flood Warning until further notice
    Flood Watch December 10, 09:51pm until December 12, 04:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 47 °F

    Rain Likely
    then Rain

  • Thursday

    Thursday: Rain, mainly before 11am. High near 51. East wind around 5 mph becoming calm in the morning. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 51 °F

    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm. Cloudy, with a low around 46. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Rain Likely

  • Friday

    Friday: A 40 percent chance of rain. Cloudy, with a high near 53. South southwest wind around 6 mph.

    High: 53 °F

    Chance Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 46. South wind around 6 mph.

    Low: 46 °F

    Chance Rain

  • Saturday

    Saturday: A 10 percent chance of rain after 4pm. Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Rain, mainly after 10pm. Low around 47. Chance of precipitation is 80%.

    Low: 47 °F

    Rain

  • Sunday

    Sunday: Rain. Mostly cloudy, with a high near 53.

    High: 53 °F

    Rain

Detailed Forecast

Tonight
Rain. Low around 47. Southwest wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Thursday
Rain, mainly before 11am. High near 51. East wind around 5 mph becoming calm in the morning. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely, mainly before 10pm. Cloudy, with a low around 46. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 40 percent chance of rain. Cloudy, with a high near 53. South southwest wind around 6 mph.
Friday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 46. South wind around 6 mph.
Saturday
A 10 percent chance of rain after 4pm. Partly sunny, with a high near 55.
Saturday Night
Rain, mainly after 10pm. Low around 47. Chance of precipitation is 80%.
Sunday
Rain. Mostly cloudy, with a high near 53.
Sunday Night
Rain. Mostly cloudy, with a low around 49.
Monday
Rain. Cloudy, with a high near 56.
Monday Night
Rain. Cloudy, with a low around 45.
Tuesday
Rain. Cloudy, with a high near 50.
Tuesday Night
Rain. Cloudy, with a low around 41.
Wednesday
Rain. Cloudy, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
7:01 pm PST Dec 10, 2025
Forecast Valid:
9pm PST Dec 10, 2025-6pm PST Dec 17, 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