Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Mostly Cloudy

46°F

8°C

Humidity 61%
Wind Speed N 4 MPH
Barometer 30.36 in (1028.11 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 14 Mar 04:15 PM PDT
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Light east southeast wind.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of rain, mainly after 2pm.  Mostly cloudy, with a high near 47. Light and variable wind.

    High: 47 °F

    Slight Chance
    Rain then
    Chance Rain

  • Sunday Night

    Sunday Night: Rain.  Low around 42. Southeast wind around 6 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain then
    Rain Likely

  • Monday

    Monday: Rain.  High near 54. South southeast wind 7 to 9 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Rain

  • Monday Night

    Monday Night: Rain likely, mainly after 11pm.  Cloudy, with a low around 48. South wind around 9 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain.  High near 53. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 50. Chance of precipitation is 90%.

    Low: 50 °F

    Rain

  • Wednesday

    Wednesday: Rain.  Cloudy, with a high near 55.

    High: 55 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Cloudy, with a low around 51.

    Low: 51 °F

    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 31. Light east southeast wind.
Sunday
A 50 percent chance of rain, mainly after 2pm. Mostly cloudy, with a high near 47. Light and variable wind.
Sunday Night
Rain. Low around 42. Southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain. High near 54. South southeast wind 7 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Rain likely, mainly after 11pm. Cloudy, with a low around 48. South wind around 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 53. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Low around 50. Chance of precipitation is 90%.
Wednesday
Rain. Cloudy, with a high near 55.
Wednesday Night
Rain. Cloudy, with a low around 51.
Thursday
Rain. Cloudy, with a high near 58.
Thursday Night
Rain. Cloudy, with a low around 51.
Friday
Rain likely. Mostly cloudy, with a high near 60.
Friday Night
A chance of rain. Mostly cloudy, with a low around 48.
Saturday
A chance of rain. Mostly cloudy, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.54°N 122.17°W (Elev. 397 ft)
2:26 pm PDT Mar 14, 2026
4pm PDT Mar 14, 2026-6pm PDT Mar 21, 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