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

57°F

14°C

Humidity 62%
Wind Speed SSE 8 MPH
Barometer 29.48 in (998.31 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 05 Nov 05:35 AM PST
Extended Forecast for

Newcastle WA

  • Overnight

    Overnight: A 50 percent chance of rain. Cloudy, with a low around 51. Southeast wind around 10 mph.

    Low: 51 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain, mainly after 8am. High near 60. South wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Steady temperature around 53. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Rain

  • Thursday

    Thursday: Rain. High near 57. South southeast wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 46. South southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Showers

  • Friday

    Friday: Rain, mainly before 4pm. High near 54. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of rain. Cloudy, with a low around 51. Southeast wind around 10 mph.
Wednesday
Rain, mainly after 8am. High near 60. South wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain and possibly a thunderstorm. Steady temperature around 53. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Rain. High near 57. South southeast wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 46. South southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Rain, mainly before 4pm. High near 54. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 41.
Saturday
Partly sunny, with a high near 57.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A slight chance of rain after 4pm. Mostly cloudy, with a high near 62.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 49.
Monday
Rain likely. Mostly cloudy, with a high near 59.
Monday Night
Rain likely. Mostly cloudy, with a low around 48.
Veterans Day
A chance of rain. Mostly cloudy, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.52°N 122.17°W (Elev. 400 ft)
Last Update:
1:25 am PST Nov 5, 2025
Forecast Valid:
5am PST Nov 5, 2025-6pm PST Nov 11, 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