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 N 0 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 34°F (1°C)
Visibility 0.50 mi
Last update 31 Dec 04:20 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
  •  
    Dense Fog Advisory until December 31, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46. South southeast wind around 5 mph becoming calm in the morning.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 35. South 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 45. Southeast wind around 6 mph.

    High: 45 °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. 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. Cloudy, with a low around 45. Chance of precipitation is 70%.

    Low: 45 °F

    Rain Likely

  • Saturday

    Saturday: Rain. Cloudy, with a high near 52.

    High: 52 °F

    Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 35. Southeast wind around 6 mph.
Wednesday
Mostly sunny, with a high near 46. South southeast wind around 5 mph becoming calm in the morning.
Wednesday Night
Increasing clouds, with a low around 35. South southeast wind 5 to 7 mph.
New Year's Day
A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 45. Southeast wind around 6 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. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain likely. Cloudy, with a low around 45. Chance of precipitation is 70%.
Saturday
Rain. Cloudy, with a high near 52.
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 41.
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
 47.54°N 122.17°W (Elev. 397 ft)
Last Update:
1:25 am PST Dec 31, 2025
Forecast Valid:
4am 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