Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

32°F

0°C

Humidity 95%
Wind Speed N 0 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 30 Dec 06:53 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: Mostly sunny, with a high near 46. East wind around 5 mph becoming calm  in the morning.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Light south southeast wind.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 47. Light and variable wind.

    High: 47 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36. Light southeast wind.

    Low: 36 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: A 20 percent chance of rain after 10am.  Mostly cloudy, with a high near 48. Southeast wind 3 to 5 mph.

    High: 48 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: A 50 percent chance of rain.  Cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

  • Friday

    Friday: Rain likely.  Mostly cloudy, with a high near 49. Chance of precipitation is 70%.

    High: 49 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely.  Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain Likely

Detailed Forecast

Today
Mostly sunny, with a high near 46. East wind around 5 mph becoming calm in the morning.
Tonight
Partly cloudy, with a low around 35. Light south southeast wind.
Wednesday
Partly sunny, with a high near 47. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 36. Light southeast wind.
New Year's Day
A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 48. Southeast wind 3 to 5 mph.
Thursday Night
A 50 percent chance of rain. Cloudy, with a low around 41.
Friday
Rain likely. Mostly cloudy, with a high near 49. Chance of precipitation is 70%.
Friday Night
Rain likely. Mostly cloudy, with a low around 42.
Saturday
Rain likely. Mostly cloudy, with a high near 48.
Saturday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 40.
Sunday
A chance of rain. Mostly cloudy, with a high near 48.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 40.
Monday
A chance of rain. Mostly cloudy, with a high near 49.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.54°N 122.17°W (Elev. 397 ft)
7:01 am PST Dec 30, 2025
7am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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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