Active Spring Like Pattern Across the Country

A frontal boundary will slowly move eastward and clear most of the eastern seaboard by Sunday. Showers and thunderstorms, some severe, will accompany this front alongside the threat of heavy rainfall; These threats may linger along the Gulf Coast states into early next week. Meanwhile, record spring-like warmth is forecast, mainly east of the Mississippi River, this weekend into next week. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

55°F

13°C

Humidity 77%
Wind Speed S 8 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 07 Mar 04:53 PM PST
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: A 40 percent chance of rain.  Mostly cloudy, with a high near 54. South southwest wind around 11 mph, with gusts as high as 24 mph.

    High: 54 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly after 11pm.  Low around 47. South southwest wind 11 to 15 mph, with gusts as high as 28 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Chance Rain
    then Rain

  • Sunday

    Sunday: Rain, mainly before noon.  Temperature rising to near 50 by noon, then falling to around 45 during the remainder of the day. North wind 7 to 10 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain then
    Chance Rain

  • Sunday Night

    Sunday Night: Rain before 1am, then rain and snow.  Low around 36. South southwest wind around 7 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain then
    Rain/Snow

  • Monday

    Monday: Rain, possibly mixed with snow, becoming all rain after 1pm.  High near 45. Southwest wind 7 to 10 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow

  • Monday Night

    Monday Night: Rain before 10pm, then snow.  Low around 34. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow
    then Snow

  • Tuesday

    Tuesday: Snow before 10am, then rain, possibly mixed with snow between 10am and 1pm, then rain after 1pm.  High near 45. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain.  Cloudy, with a low around 38.

    Low: 38 °F

    Rain

  • Wednesday

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

    High: 48 °F

    Rain

Detailed Forecast

This Afternoon
A 40 percent chance of rain. Mostly cloudy, with a high near 54. South southwest wind around 11 mph, with gusts as high as 24 mph.
Tonight
Rain, mainly after 11pm. Low around 47. South southwest wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain, mainly before noon. Temperature rising to near 50 by noon, then falling to around 45 during the remainder of the day. North wind 7 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain before 1am, then rain and snow. Low around 36. South southwest wind around 7 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
Rain, possibly mixed with snow, becoming all rain after 1pm. High near 45. Southwest wind 7 to 10 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
Rain before 10pm, then snow. Low around 34. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tuesday
Snow before 10am, then rain, possibly mixed with snow between 10am and 1pm, then rain after 1pm. High near 45. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tuesday Night
Rain. Cloudy, with a low around 38.
Wednesday
Rain. Cloudy, with a high near 48.
Wednesday Night
Rain. Cloudy, with a low around 42.
Thursday
Rain. Cloudy, with a high near 48.
Thursday Night
Rain and snow. Cloudy, with a low around 39.
Friday
Rain and snow. Cloudy, with a high near 48.
Friday Night
Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 37.
Saturday
Rain and snow likely. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.52°N 122.17°W (Elev. 400 ft)
1:25 pm PST Mar 7, 2026
5pm PST Mar 7, 2026-6pm PDT Mar 14, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database