National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Record Breaking Temperatures and Critical Fire Weather

More than 200 record or near record maximum temperatures are forecast across the southern half of the U.S. through the end of this week before additional record temperatures center back over the Southwest U.S. into the Rockies this weekend. Widespread record breaking warmth, low humidity, and gusty winds will produce critical fire weather today in the central Rockies to Plains. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.

Overcast

46°F

8°C

Humidity 76%
Wind Speed SSW 5 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 25 Mar 01:53 PM PDT
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: Rain likely, mainly after 5pm. Mostly cloudy, with a high near 47. Southwest wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Rain Likely

  • Tonight

    Tonight: A chance of rain, possibly mixing with snow after 11pm, then gradually ending. Partly cloudy, with a low around 33. South wind 6 to 10 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 50. South southwest wind around 7 mph.

    High: 50 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. South southwest wind around 5 mph becoming light and variable in the evening.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 55. East northeast wind 5 to 8 mph becoming north in the afternoon.

    High: 55 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain, mainly after 11am. Mostly cloudy, with a high near 52.

    High: 52 °F

    Chance Rain

Detailed Forecast

This Afternoon
Rain likely, mainly after 5pm. Mostly cloudy, with a high near 47. Southwest wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of rain, possibly mixing with snow after 11pm, then gradually ending. Partly cloudy, with a low around 33. South wind 6 to 10 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday
Mostly sunny, with a high near 50. South southwest wind around 7 mph.
Thursday Night
Mostly clear, with a low around 34. South southwest wind around 5 mph becoming light and variable in the evening.
Friday
Mostly sunny, with a high near 55. East northeast wind 5 to 8 mph becoming north in the afternoon.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 55.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
A chance of rain, mainly after 11am. Mostly cloudy, with a high near 52.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 39.
Monday
A chance of rain. Mostly cloudy, with a high near 49.
Monday Night
A chance of rain. Mostly cloudy, with a low around 36.
Tuesday
A chance of rain. Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
11:27 am PDT Mar 25, 2026
Forecast Valid:
2pm PDT Mar 25, 2026-6pm PDT Mar 31, 2026
 
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