Heavy Snow and Disruptive Ice in the Upper Midwest; Severe Thunderstorms in the Southern Plains

A late season winter storm will produce a combination of heavy snow and disruptive ice starting this evening in the Northern Plains and moving into the Upper Midwest and Great Lakes by tonight continuing through Thursday. Severe thunderstorms will likely produce severe wind gusts, large hail, a few tornadoes, and heavy rainfall across the southern and central Plains today. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Rain

45°F

7°C

Humidity 93%
Wind Speed ESE 4 MPH
Barometer 29.63 in (1003.39 mb)
Dewpoint 43°F (6°C)
Visibility 9.00 mi
Wind Chill43°F (6°C)
Last update 01 Apr 06:00 AM PDT
Extended Forecast for

Newcastle WA

  • Today

    Today: Rain.  High near 49. Southeast wind around 7 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 9pm.  Low around 39. South wind 6 to 9 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Rain then
    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly before 11am.  Mostly cloudy, with a high near 50. South wind around 7 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 40. South southwest wind around 7 mph.

    Low: 40 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 55. Southwest wind around 6 mph.

    High: 55 °F

    Partly Sunny

  • Friday Night

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

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

Detailed Forecast

Today
Rain. High near 49. Southeast wind around 7 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain, mainly before 9pm. Low around 39. South wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely, mainly before 11am. Mostly cloudy, with a high near 50. South wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 40. South southwest wind around 7 mph.
Friday
Partly sunny, with a high near 55. Southwest wind around 6 mph.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 65.
Monday Night
Mostly cloudy, with a low around 47.
Tuesday
A chance of rain. Partly sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
11:26 pm PDT Mar 31, 2026
6am PDT Apr 1, 2026-6pm PDT Apr 7, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database