Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

light snow,mist

33°F

1°C

Humidity 95%
Wind Speed N 0 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 32°F (0°C)
Visibility 5.00 mi
Last update 13 Mar 07:24 PM PDT
Extended Forecast for

Newcastle WA

Winter Weather Advisory until March 14, 11:00am
Winter Weather Advisory March 13, 07:44pm until March 14, 11:00am
Click here for hazard details and duration
Winter Weather Advisory
Winter Weather Advisory
  •  
    Winter Weather Advisory until March 14, 11:00am
    Winter Weather Advisory March 13, 07:44pm until March 14, 11:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 32 °F

    Rain/Snow
    then
    Rain/Snow
    Likely

  • Saturday

    Saturday: A 30 percent chance of snow between 11am and 2pm.  Mostly cloudy, then gradually becoming sunny, with a high near 42. West wind around 6 mph.  New snow accumulation of less than a half inch possible.

    High: 42 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30. Light and variable wind becoming east southeast around 6 mph in the evening.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain and snow likely after 11am, becoming all rain after 2pm.  Mostly cloudy, with a high near 45. South wind 3 to 5 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: Rain.  Low around 41. South southeast wind 6 to 9 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain

  • Monday

    Monday: Rain.  High near 50. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain

  • Monday Night

    Monday Night: Rain.  Low around 45. Chance of precipitation is 80%.

    Low: 45 °F

    Rain

  • Tuesday

    Tuesday: Rain.  Cloudy, with a high near 53.

    High: 53 °F

    Rain

Detailed Forecast

Tonight
Rain and snow. Low around 32. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow between 11am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 42. West wind around 6 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around 30. Light and variable wind becoming east southeast around 6 mph in the evening.
Sunday
Rain and snow likely after 11am, becoming all rain after 2pm. Mostly cloudy, with a high near 45. South wind 3 to 5 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday Night
Rain. Low around 41. South southeast wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain. High near 50. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Rain. Low around 45. Chance of precipitation is 80%.
Tuesday
Rain. Cloudy, with a high near 53.
Tuesday Night
Rain. Cloudy, with a low around 48.
Wednesday
Rain. Cloudy, with a high near 56.
Wednesday Night
Rain. Cloudy, with a low around 49.
Thursday
Rain. Cloudy, with a high near 56.
Thursday Night
Rain likely. Mostly cloudy, with a low around 47.
Friday
A chance of rain. Mostly cloudy, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
2:25 pm PDT Mar 13, 2026
7pm PDT Mar 13, 2026-6pm PDT Mar 20, 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