Winter Returns Across the Northern Tier; Record Warmth for the Southwest

A large high pressure system will usher in cold air for this first day of March across the northern Plains, Great Lakes, Northeast and mid-Atlantic. Some wintry precipitation may evolve across the mid-Mississippi Valley, Ohio Valley and mid-Atlantic through Monday. Meanwhile, record warmth will spread across the Southwest, southern Plains through early this week. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

45°F

7°C

Humidity 75%
Wind Speed N 11 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 01 Mar 10:20 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: Sunny, with a high near 54. North wind 3 to 6 mph.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain after 4am.  Increasing clouds, with a low around 45. South wind around 6 mph.

    Low: 45 °F

    Partly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: Rain, mainly after 10am.  High near 51. South wind 7 to 9 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 45. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Rain

  • Wednesday

    Wednesday: Rain.  High near 49. Chance of precipitation is 100%.

    High: 49 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain

  • Thursday

    Thursday: Rain.  Cloudy, with a high near 48.

    High: 48 °F

    Rain

Detailed Forecast

Today
Sunny, with a high near 54. North wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 36. Calm wind.
Monday
Sunny, with a high near 57. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
A 30 percent chance of rain after 4am. Increasing clouds, with a low around 45. South wind around 6 mph.
Tuesday
Rain, mainly after 10am. High near 51. South wind 7 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Low around 45. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain. High near 49. Chance of precipitation is 100%.
Wednesday Night
Rain. Mostly cloudy, with a low around 42.
Thursday
Rain. Cloudy, with a high near 48.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 42.
Friday
Rain likely. Cloudy, with a high near 49.
Friday Night
Rain likely. Cloudy, with a low around 43.
Saturday
Rain. Cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
7:00 am PST Mar 1, 2026
10am PST Mar 1, 2026-6pm PST Mar 7, 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