Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

40°F

4°C

Humidity 79%
Wind Speed S 5 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 26 Dec 11:53 PM PST
Extended Forecast for

Newcastle WA

  • Overnight

    Overnight: A 40 percent chance of snow, mainly before 3am.  Patchy fog after 4am.  Otherwise, partly cloudy, with a steady temperature around 34. South southwest wind around 6 mph becoming west northwest.  Little or no snow accumulation expected.

    Low: 34 °F

    Chance Snow
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog between 7am and 9am.  Otherwise, mostly sunny, with a high near 38. Light north wind.

    High: 38 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 40. Calm wind.

    High: 40 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33. Light east wind.

    Low: 33 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of snow, mainly before 3am. Patchy fog after 4am. Otherwise, partly cloudy, with a steady temperature around 34. South southwest wind around 6 mph becoming west northwest. Little or no snow accumulation expected.
Saturday
Patchy fog between 7am and 9am. Otherwise, mostly sunny, with a high near 38. Light north wind.
Saturday Night
Mostly cloudy, with a low around 31. Calm wind.
Sunday
Partly sunny, with a high near 40. Calm wind.
Sunday Night
Mostly cloudy, with a low around 33. Light east wind.
Monday
Mostly cloudy, with a high near 43.
Monday Night
Mostly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
A slight chance of rain after 10am. Mostly cloudy, with a high near 46.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 38.
New Year's Day
A chance of rain. Cloudy, with a high near 47.
Thursday Night
Rain likely. Mostly cloudy, with a low around 38.
Friday
A chance of rain. Mostly cloudy, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
7:01 pm PST Dec 26, 2025
12am PST Dec 27, 2025-6pm PST Jan 2, 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