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.

Fog

34°F

1°C

Humidity 100%
Wind Speed S 3 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 34°F (1°C)
Visibility 0.24 mi
Last update 31 Dec 08:20 AM PST
Extended Forecast for

Newcastle WA

Dense Fog Advisory until December 31, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until December 31, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Today

    High: 46 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 35. Southeast wind 5 to 7 mph.

    Low: 35 °F

    Increasing
    Clouds

  • New Year's Day

    New Year's Day: A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 46. Southeast wind 5 to 7 mph.

    High: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 10pm. Cloudy, with a low around 41. Light east southeast wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Rain Likely

  • Friday

    Friday: Rain likely. Cloudy, with a high near 51. Southeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Rain Likely

  • Saturday

    Saturday: Rain. High near 52. Chance of precipitation is 80%.

    High: 52 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain

Detailed Forecast

Today
Areas of dense fog before 11am. Otherwise, mostly sunny, with a high near 46. Light and variable wind.
Tonight
Increasing clouds, with a low around 35. Southeast wind 5 to 7 mph.
New Year's Day
A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 46. Southeast wind 5 to 7 mph.
Thursday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 41. Light east southeast wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain likely. Cloudy, with a high near 51. Southeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 52. Chance of precipitation is 80%.
Saturday Night
Rain. Mostly cloudy, with a low around 43.
Sunday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 49.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 40.
Monday
A chance of rain. Mostly cloudy, with a high near 48.
Monday Night
A chance of rain. Mostly cloudy, with a low around 39.
Tuesday
A chance of rain. Mostly cloudy, with a high near 48.
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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:
7:01 am PST Dec 31, 2025
Forecast Valid:
8am PST Dec 31, 2025-6pm PST Jan 6, 2026
 
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