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

73°F

23°C

Humidity 38%
Wind Speed NA 4 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 Jun 02:53 PM PDT
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. West southwest wind 5 to 8 mph becoming calm after midnight.

    Low: 50 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 68. Calm wind becoming northwest 5 to 7 mph in the morning.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of rain after 11pm. Increasing clouds, with a low around 51. North northwest wind 5 to 7 mph becoming east after midnight.

    Low: 51 °F

    Slight Chance
    Rain

  • Friday

    Friday: Rain, mainly after 11am. High near 60. South wind around 6 mph becoming west in the afternoon. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Rain

  • Friday Night

    Friday Night: Rain. Low around 50. Light and variable wind becoming south 5 to 8 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Rain

  • Saturday

    Saturday: Rain. High near 60. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Rain then
    Rain Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain, mainly after 11am. Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 50. West southwest wind 5 to 8 mph becoming calm after midnight.
Juneteenth
Partly sunny, with a high near 68. Calm wind becoming northwest 5 to 7 mph in the morning.
Thursday Night
A 20 percent chance of rain after 11pm. Increasing clouds, with a low around 51. North northwest wind 5 to 7 mph becoming east after midnight.
Friday
Rain, mainly after 11am. High near 60. South wind around 6 mph becoming west in the afternoon. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain. Low around 50. Light and variable wind becoming south 5 to 8 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 60. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 53.
Sunday
A chance of rain, mainly after 11am. Mostly cloudy, with a high near 70.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.54°N 122.17°W (Elev. 397 ft)
Last Update:
3:40 pm PDT Jun 18, 2025
Forecast Valid:
4pm PDT Jun 18, 2025-6pm PDT Jun 25, 2025
 
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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