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.

Rain

46°F

8°C

Humidity 87%
Wind Speed S 3 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 43°F (6°C)
Visibility 8.00 mi
Last update 03 Nov 02:20 PM PST
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: Rain. High near 50. Light east northeast wind. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Rain

  • Tonight

    Tonight: Rain likely, mainly before 2am. Cloudy, with a low around 44. Light north northeast wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Rain Likely

  • Tuesday

    Tuesday: A chance of rain before 9am, then rain likely after 3pm. Mostly cloudy, with a high near 57. Light and variable wind becoming east northeast around 6 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Chance Rain
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain. Low around 50. East southeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 59. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 59 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 49. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain

  • Thursday

    Thursday: Rain. High near 56. Chance of precipitation is 100%.

    High: 56 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Cloudy, with a low around 47.

    Low: 47 °F

    Rain

  • Friday

    Friday: Rain, mainly before 4pm. Cloudy, with a high near 54.

    High: 54 °F

    Rain

Detailed Forecast

This Afternoon
Rain. High near 50. Light east northeast wind. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain likely, mainly before 2am. Cloudy, with a low around 44. Light north northeast wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
A chance of rain before 9am, then rain likely after 3pm. Mostly cloudy, with a high near 57. Light and variable wind becoming east northeast around 6 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain. Low around 50. East southeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain. High near 59. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain. Low around 49. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain. High near 56. Chance of precipitation is 100%.
Thursday Night
Rain. Cloudy, with a low around 47.
Friday
Rain, mainly before 4pm. Cloudy, with a high near 54.
Friday Night
A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 42.
Saturday
A chance of rain. Partly sunny, with a high near 54.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 46.
Sunday
A chance of rain. Mostly cloudy, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.54°N 122.17°W (Elev. 397 ft)
Last Update:
1:25 pm PST Nov 3, 2025
Forecast Valid:
2pm PST Nov 3, 2025-6pm PST Nov 9, 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