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

34°F

1°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 32°F (0°C)
Visibility 1.75 mi
Last update 13 Mar 12:00 PM PDT
Extended Forecast for

4 Miles SSE Newcastle WA

Winter Weather Advisory until March 13, 03:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until March 13, 03:00pm

    NOW until 3:00pm Fri

    Winter Weather Advisory

  • This Afternoon

    High: 39 °F

    Rain/Snow and
    Patchy Fog

  • Tonight

    Tonight: Rain and snow, mainly before 3am.  Patchy fog before 9pm. Low around 34. Calm wind.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow and
    Patchy Fog

  • Saturday

    Saturday: Snow likely, possibly mixed with rain, becoming all snow after 8am.  Cloudy, then gradually becoming mostly sunny, with a high near 44. Light south southwest wind.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of snow before 8am, then a slight chance of rain and snow between 8am and 11am, then rain likely after 11am.  Mostly cloudy, with a high near 46. Calm wind.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Sunday Night

    Sunday Night: Rain.  Low around 40. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Rain

  • Monday

    Monday: Rain.  High near 52. Chance of precipitation is 80%.

    High: 52 °F

    Rain

  • Monday Night

    Monday Night: Rain likely.  Cloudy, with a low around 44.

    Low: 44 °F

    Rain Likely

Detailed Forecast

This Afternoon
Rain, possibly mixed with snow. Patchy fog. High near 39. Calm wind. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tonight
Rain and snow, mainly before 3am. Patchy fog before 9pm. Low around 34. Calm wind. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday
Snow likely, possibly mixed with rain, becoming all snow after 8am. Cloudy, then gradually becoming mostly sunny, with a high near 44. Light south southwest wind. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday Night
Mostly cloudy, with a low around 31. Calm wind.
Sunday
A slight chance of snow before 8am, then a slight chance of rain and snow between 8am and 11am, then rain likely after 11am. Mostly cloudy, with a high near 46. Calm wind. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night
Rain. Low around 40. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain. High near 52. Chance of precipitation is 80%.
Monday Night
Rain likely. Cloudy, with a low around 44.
Tuesday
Rain. Cloudy, with a high near 56.
Tuesday Night
Rain. Cloudy, with a low around 47.
Wednesday
Rain. Cloudy, with a high near 57.
Wednesday Night
Rain. Cloudy, with a low around 49.
Thursday
Rain likely. Cloudy, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Newcastle WA
 47.48°N 122.12°W (Elev. 499 ft)
8:00 am PDT Mar 13, 2026
12pm PDT Mar 13, 2026-6pm PDT Mar 19, 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