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

50°F

10°C

Humidity 93%
Wind Speed S 8 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 07 Mar 07:15 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: Rain likely, mainly between 11am and 4pm.  Mostly cloudy, with a high near 52. South southwest wind 9 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain Likely

  • Tonight

    Tonight: Rain, mainly after midnight.  Steady temperature around 49. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Chance Rain
    then Rain

  • Sunday

    Sunday: Rain.  Temperature falling to around 44 by 5pm. South southwest wind 9 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain then
    Rain Likely

  • Sunday Night

    Sunday Night: Rain likely before 10pm, then rain and snow likely between 10pm and 1am, then snow likely after 1am.  Mostly cloudy, with a low around 35. South southwest wind around 7 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain/Snow
    Likely

  • Monday

    Monday: Rain and snow.  High near 44. Southwest wind 8 to 10 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow

  • Monday Night

    Monday Night: Snow.  Low around 34. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 34 °F

    Snow

  • Tuesday

    Tuesday: Snow before 1pm, then rain, possibly mixed with snow between 1pm and 4pm, then rain after 4pm.  High near 44. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 44 °F

    Snow then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain before 10pm, then rain, possibly mixed with snow.  Cloudy, with a low around 38.

    Low: 38 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain, possibly mixed with snow, becoming all rain after 10am.  Cloudy, with a high near 47.

    High: 47 °F

    Rain/Snow
    then Rain

Detailed Forecast

Today
Rain likely, mainly between 11am and 4pm. Mostly cloudy, with a high near 52. South southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly after midnight. Steady temperature around 49. South southwest wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain. Temperature falling to around 44 by 5pm. South southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely before 10pm, then rain and snow likely between 10pm and 1am, then snow likely after 1am. Mostly cloudy, with a low around 35. South southwest wind around 7 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday
Rain and snow. High near 44. Southwest wind 8 to 10 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
Snow. Low around 34. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tuesday
Snow before 1pm, then rain, possibly mixed with snow between 1pm and 4pm, then rain after 4pm. High near 44. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tuesday Night
Rain before 10pm, then rain, possibly mixed with snow. Cloudy, with a low around 38.
Wednesday
Rain, possibly mixed with snow, becoming all rain after 10am. Cloudy, with a high near 47.
Wednesday Night
Rain before 10pm, then rain, possibly mixed with snow. Cloudy, with a low around 41.
Thursday
Rain, possibly mixed with snow. Cloudy, with a high near 48.
Thursday Night
Rain and snow. Cloudy, with a low around 38.
Friday
Rain and snow. Cloudy, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
7:01 am PST Mar 7, 2026
7am PST Mar 7, 2026-6pm PDT Mar 13, 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