National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms Likely in the Central U.S.; Flooding Possible for portions of Oklahoma/Texas/Arkansas and the Marianas.

Severe thunderstorms are likely from the southern Plains to the Midwest through Friday. Large hail, damaging winds, and tornadoes are all possible. An Enhanced (level 3 of 5) risk is in effect. Flash flooding is possible across portions of Oklahoma, Texas, and Arkansas on Friday. A Slight (level 2 of 4) risk is in effect. Flooding rain may impact Guam and the Marianas through next week. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Mist

46°F

8°C

Humidity 87%
Wind Speed SE 4 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 43°F (6°C)
Visibility 5.00 mi
Wind Chill44°F (7°C)
Last update 05 Mar 09:30 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: A 50 percent chance of rain, mainly before 5pm. Mostly cloudy, with a high near 48. South wind around 6 mph.

    High: 48 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly after midnight. Low around 42. South wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain. High near 49. South wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 10pm. Low around 47. South wind around 8 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Rain

  • Saturday

    Saturday: Rain likely, mainly before 10am. Cloudy, with a high near 52. South wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain likely, mainly after 10pm. Cloudy, with a low around 47. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Rain Likely

  • Sunday

    Sunday: Rain. High near 51. Chance of precipitation is 90%.

    High: 51 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely before 10pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Rain/Snow
    Likely

  • Monday

    Monday: Rain and snow. Mostly cloudy, with a high near 45.

    High: 45 °F

    Rain/Snow

Detailed Forecast

Today
A 50 percent chance of rain, mainly before 5pm. Mostly cloudy, with a high near 48. South wind around 6 mph.
Tonight
Rain, mainly after midnight. Low around 42. South wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 49. South wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain, mainly before 10pm. Low around 47. South wind around 8 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain likely, mainly before 10am. Cloudy, with a high near 52. South wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 47. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain. High near 51. Chance of precipitation is 90%.
Sunday Night
Rain likely before 10pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 38.
Monday
Rain and snow. Mostly cloudy, with a high near 45.
Monday Night
Snow. Mostly cloudy, with a low around 34.
Tuesday
Rain and snow. Mostly cloudy, with a high near 45.
Tuesday Night
Rain, possibly mixed with snow. Mostly cloudy, with a low around 36.
Wednesday
Rain, possibly mixed with snow. Cloudy, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
7:01 am PST Mar 5, 2026
Forecast Valid:
9am PST Mar 5, 2026-6pm PDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation