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

41°F

5°C

Humidity 86%
Wind Speed NNW 4 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 01 Jan 01:20 PM PST
Extended Forecast for

Newcastle WA

  • New Year's Day

    New Year's Day: A 40 percent chance of rain. Cloudy, with a high near 45. Calm wind.

    High: 45 °F

    Chance Rain

  • Tonight

    Tonight: Rain. Low around 40. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain Likely
    then Rain

  • Friday

    Friday: Rain likely, mainly after 4pm. Cloudy, with a high near 50. South wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain, mainly after 4am. Low around 45. East wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Rain

  • Saturday

    Saturday: Rain. High near 52. Southeast wind 6 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 44. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Rain

  • Sunday

    Sunday: Rain. High near 49. Chance of precipitation is 80%.

    High: 49 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Rain Likely

  • Monday

    Monday: A chance of rain, mainly before 4pm. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

Detailed Forecast

New Year's Day
A 40 percent chance of rain. Cloudy, with a high near 45. Calm wind.
Tonight
Rain. Low around 40. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain likely, mainly after 4pm. Cloudy, with a high near 50. South wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain, mainly after 4am. Low around 45. East wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 52. Southeast wind 6 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain. Low around 44. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain. High near 49. Chance of precipitation is 80%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 41.
Monday
A chance of rain, mainly before 4pm. Mostly cloudy, with a high near 47.
Monday Night
A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 39.
Tuesday
Rain likely. Mostly cloudy, with a high near 46.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 38.
Wednesday
Rain likely. Mostly cloudy, with a high near 45.
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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 pm PST Jan 1, 2026
Forecast Valid:
1pm PST Jan 1, 2026-6pm PST Jan 7, 2026
 
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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