Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Periods of critical fire weather will persist from the central Rockies to the central Plains through the weekend as gusty winds and low relative humidity continue. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

55°F

13°C

Humidity 96%
Wind Speed SE 3 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 54°F (12°C)
Visibility 8.00 mi
Last update 20 Mar 02:04 AM PDT
Extended Forecast for

2 Miles E Newcastle WA

Flood Watch March 20, 02:18am until March 20, 05:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch March 20, 02:18am until March 20, 05:00pm

    NOW until 5:00pm Fri

    Flood Watch

  • Overnight

    Low: 51 °F

    Rain

  • Friday

    Friday: Rain, mainly before 2pm.  High near 53. South southwest wind around 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain before 11pm, then a chance of showers between 11pm and 3am.  Mostly cloudy, with a low around 38. West southwest wind 7 to 11 mph becoming northeast after midnight.  Chance of precipitation is 40%.

    Low: 38 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain showers before 11am, then a slight chance of rain and snow showers between 11am and 2pm, then a slight chance of rain showers after 2pm.  Partly sunny, with a high near 46. North wind around 7 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 46 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of showers.  Partly cloudy, with a low around 35. North wind 7 to 10 mph becoming south after midnight.

    Low: 35 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of rain and snow before 11am, then a chance of rain.  Partly sunny, with a high near 48. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 48 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Rain. Low around 51. South southwest wind around 14 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain, mainly before 2pm. High near 53. South southwest wind around 16 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A chance of rain before 11pm, then a chance of showers between 11pm and 3am. Mostly cloudy, with a low around 38. West southwest wind 7 to 11 mph becoming northeast after midnight. Chance of precipitation is 40%.
Saturday
A chance of rain showers before 11am, then a slight chance of rain and snow showers between 11am and 2pm, then a slight chance of rain showers after 2pm. Partly sunny, with a high near 46. North wind around 7 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 35. North wind 7 to 10 mph becoming south after midnight.
Sunday
A chance of rain and snow before 11am, then a chance of rain. Partly sunny, with a high near 48. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Mostly cloudy, with a high near 50.
Monday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 40.
Tuesday
Rain. Cloudy, with a high near 50.
Tuesday Night
Rain. Mostly cloudy, with a low around 38.
Wednesday
Rain. Mostly cloudy, with a high near 47.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34.
Thursday
A chance of rain. Partly sunny, with a high near 51.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Newcastle WA
 47.55°N 122.11°W (Elev. 794 ft)
1:53 am PDT Mar 20, 2026
2am PDT Mar 20, 2026-6pm PDT Mar 26, 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