Heat Persists Across the Central and Western U.S.; Fire Weather Concerns in the Rockies and High Plains

Record-breaking heat expected in the Central and Western U.S. for the next several days. Gusty winds and low relative humidity will create elevated to critical fire weather conditions over portions of the Rockies and High Plains Wednesday and Thursday. Rain and mountain snow are possible across the Pacific Northwest into the Rockies through Wednesday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

50°F

10°C

Humidity 76%
Wind Speed S 8 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 24 Mar 08:20 PM PDT
Extended Forecast for

Newcastle WA

Flood Warning until March 26, 02:00am
Click here for hazard details and duration
Flood Warning
  •  
    Flood Warning until March 26, 02:00am

    NOW until 2:00am Thu

    Flood Warning

  • Tonight

    Low: 40 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain.  High near 48. South southwest wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 48 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 11pm, then a chance of rain and snow.  Mostly cloudy, with a low around 36. South wind 10 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before 11am, then a slight chance of rain.  Mostly sunny, with a high near 50. South wind around 9 mph.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 50 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. Southwest wind around 6 mph becoming east northeast after midnight.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Friday Night

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

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

Detailed Forecast

Tonight
A 50 percent chance of rain. Mostly cloudy, with a low around 40. South southwest wind 14 to 18 mph, with gusts as high as 24 mph.
Wednesday
Rain. High near 48. South southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 36. South wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday
A chance of rain and snow before 11am, then a slight chance of rain. Mostly sunny, with a high near 50. South wind around 9 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 33. Southwest wind around 6 mph becoming east northeast after midnight.
Friday
Mostly sunny, with a high near 56.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 57.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
A chance of rain, mainly after 11am. Mostly cloudy, with a high near 58.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 42.
Monday
A chance of rain. Mostly cloudy, with a high near 53.
Monday Night
A chance of rain. Mostly cloudy, with a low around 41.
Tuesday
A chance of rain. Mostly cloudy, with a high near 53.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.55°N 122.14°W (Elev. 538 ft)
11:26 am PDT Mar 24, 2026
8pm PDT Mar 24, 2026-6pm PDT Mar 31, 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