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

55°F

13°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 13 Nov 09:53 PM PST
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Rain likely, mainly before 4am. Cloudy, with a low around 47. South southwest wind 6 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Rain Likely

  • Friday

    Friday: Rain likely, mainly before 3pm. Cloudy, with a high near 52. South wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain. Low around 49. South wind 6 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain

  • Saturday

    Saturday: Rain. High near 55. South wind 7 to 9 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 49. Southeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Rain Likely
    then Chance
    Rain

  • Sunday

    Sunday: Rain. High near 55. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain

  • Sunday Night

    Sunday Night: Rain, mainly before 10pm. Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Rain then
    Chance Rain

  • Monday

    Monday: A chance of rain. Partly sunny, with a high near 50.

    High: 50 °F

    Chance Rain

  • Monday Night

    Monday Night: A slight chance of rain. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Rain likely, mainly before 4am. Cloudy, with a low around 47. South southwest wind 6 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain likely, mainly before 3pm. Cloudy, with a high near 52. South wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain. Low around 49. South wind 6 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 55. South wind 7 to 9 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 49. Southeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain. High near 55. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain, mainly before 10pm. Low around 44. Chance of precipitation is 80%.
Monday
A chance of rain. Partly sunny, with a high near 50.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 39.
Tuesday
A slight chance of rain. Partly sunny, with a high near 47.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 38.
Wednesday
Rain likely. Mostly cloudy, with a high near 47.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 39.
Thursday
A chance of rain. Partly sunny, with a high near 48.
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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:
7:00 pm PST Nov 13, 2025
Forecast Valid:
10pm PST Nov 13, 2025-6pm PST Nov 20, 2025
 
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Additional Resources

Radar & Satellite Image

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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