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

37°F

3°C

Humidity 93%
Wind Speed S 3 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 15 Oct 05:00 AM PDT
Extended Forecast for

3 Miles SSE Newcastle WA

  • Today

    Today: Areas of frost between 7am and 8am. Otherwise, sunny, with a high near 62. Light and variable wind.

    High: 62 °F

    Areas Frost
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. Light and variable wind.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 59. South southwest wind around 6 mph.

    High: 59 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 49. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers, mainly before 11am. Mostly cloudy, with a high near 60. South wind around 5 mph becoming light and variable in the morning.

    High: 60 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of rain. Mostly cloudy, with a high near 59.

    High: 59 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Rain. Cloudy, with a low around 49.

    Low: 49 °F

    Rain

  • Sunday

    Sunday: Rain. Cloudy, with a high near 57.

    High: 57 °F

    Rain

Detailed Forecast

Today
Areas of frost between 7am and 8am. Otherwise, sunny, with a high near 62. Light and variable wind.
Tonight
Mostly clear, with a low around 42. Light and variable wind.
Thursday
Partly sunny, with a high near 59. South southwest wind around 6 mph.
Thursday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 49. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 40 percent chance of showers, mainly before 11am. Mostly cloudy, with a high near 60. South wind around 5 mph becoming light and variable in the morning.
Friday Night
Mostly cloudy, with a low around 45.
Saturday
A 50 percent chance of rain. Mostly cloudy, with a high near 59.
Saturday Night
Rain. Cloudy, with a low around 49.
Sunday
Rain. Cloudy, with a high near 57.
Sunday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 45.
Monday
A chance of showers. Partly sunny, with a high near 57.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 45.
Tuesday
A chance of showers. Mostly cloudy, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Newcastle WA
 47.51°N 122.13°W (Elev. 400 ft)
Last Update:
2:25 am PDT Oct 15, 2025
Forecast Valid:
5am PDT Oct 15, 2025-6pm PDT Oct 21, 2025
 
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