National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

66°F

19°C

Humidity 52%
Wind Speed NNW 11 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 06 Oct 06:20 PM PDT
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Clear, with a low around 50. North wind around 5 mph becoming light and variable after midnight.

    Low: 50 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 71. Light and variable wind.

    High: 71 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 48. Calm wind becoming south around 5 mph after midnight.

    Low: 48 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 20 percent chance of rain. Partly sunny, with a high near 60. Southwest wind around 6 mph.

    High: 60 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after 11pm. Partly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 11am. Partly sunny, with a high near 62.

    High: 62 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Friday

    Friday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 61.

    High: 61 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Rain Likely

Detailed Forecast

Tonight
Clear, with a low around 50. North wind around 5 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 71. Light and variable wind.
Tuesday Night
Increasing clouds, with a low around 48. Calm wind becoming south around 5 mph after midnight.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 60. Southwest wind around 6 mph.
Wednesday Night
A 30 percent chance of rain, mainly after 11pm. Partly cloudy, with a low around 45. Light and variable wind.
Thursday
A 30 percent chance of rain, mainly before 11am. Partly sunny, with a high near 62.
Thursday Night
A 40 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 48.
Friday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 61.
Friday Night
Rain likely. Mostly cloudy, with a low around 49.
Saturday
Rain likely. Mostly cloudy, with a high near 57.
Saturday Night
Rain likely. Mostly cloudy, with a low around 47.
Sunday
A chance of rain. Mostly cloudy, with a high near 56.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 44.
Columbus Day
A chance of rain. Mostly sunny, with a high near 60.
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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:
2:25 pm PDT Oct 6, 2025
Forecast Valid:
6pm PDT Oct 6, 2025-6pm PDT Oct 13, 2025
 
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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