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.

Overcast

66°F

19°C

Humidity 68%
Wind Speed N 0 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Sep 12:35 PM PDT
Extended Forecast for

3 Miles E Newcastle WA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 70. Calm wind.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Light and variable wind.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 73. Calm wind.

    High: 73 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 57. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 57 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Rain likely before 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 65. Southwest wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then a chance of rain after 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 70. Calm wind.
Tonight
Partly cloudy, with a low around 54. Light and variable wind.
Saturday
Partly sunny, with a high near 73. Calm wind.
Saturday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 57. Calm wind becoming south 5 to 8 mph after midnight.
Sunday
Rain likely before 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 65. Southwest wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 8pm, then a chance of rain after 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Monday
Partly sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 54.
Thursday
A slight chance of rain. Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Newcastle WA
 47.53°N 122.11°W (Elev. 1237 ft)
Last Update:
8:01 am PDT Sep 12, 2025
Forecast Valid:
12pm PDT Sep 12, 2025-6pm PDT Sep 18, 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