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

Hazardous Spring Weather Shifts to the Eastern and Northwest U.S. Wednesday

Isolated to scattered severe thunderstorms are expected Wednesday from the ArkLaTex and Lower Mississippi Valley northeastward through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat from east Texas into Upstate New York. A moderate atmospheric river will bring heavy snow and high winds to the Northwest U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Renton Municipal Airport (KRNT)

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

Rain

43°F

6°C

Humidity 81%
Wind Speed S 11 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 10 Mar 09:20 PM PDT
Extended Forecast for

Newcastle WA

Wind Advisory March 11, 03:00pm until March 12, 06:00am
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Rain, possibly mixed with snow. Low around 38. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 38 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain. High near 49. South wind 8 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 40. Breezy, with a southwest wind 17 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain. High near 43. South southwest wind 10 to 14 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: 43 °F

    Rain

  • Thursday Night

    Thursday Night: Rain before 11pm, then rain, possibly mixed with snow. Low around 36. South wind 6 to 9 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain/Snow

  • Friday

    Friday: Rain, possibly mixed with snow, becoming all rain after 11am. High near 41. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow
    then Rain

  • Friday Night

    Friday Night: Rain before 11pm, then rain likely, possibly mixed with snow. Low around 35. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain/Snow

  • Saturday

    Saturday: Rain likely, possibly mixed with snow before 8am, then snow likely between 8am and 11am, then a chance of rain and snow after 11am. Mostly cloudy, with a high near 44.

    High: 44 °F

    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: A slight chance of rain and snow before 11pm, then a slight chance of snow. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Rain, possibly mixed with snow. Low around 38. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday
Rain. High near 49. South wind 8 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain. Low around 40. Breezy, with a southwest wind 17 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain. High near 43. South southwest wind 10 to 14 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.
Thursday Night
Rain before 11pm, then rain, possibly mixed with snow. Low around 36. South wind 6 to 9 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Friday
Rain, possibly mixed with snow, becoming all rain after 11am. High near 41. Chance of precipitation is 100%. Little or no snow accumulation expected.
Friday Night
Rain before 11pm, then rain likely, possibly mixed with snow. Low around 35. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday
Rain likely, possibly mixed with snow before 8am, then snow likely between 8am and 11am, then a chance of rain and snow after 11am. Mostly cloudy, with a high near 44.
Saturday Night
A slight chance of rain and snow before 11pm, then a slight chance of snow. Mostly cloudy, with a low around 32.
Sunday
A chance of snow before 11am, then rain likely, possibly mixed with snow. Cloudy, with a high near 46.
Sunday Night
Rain likely. Cloudy, with a low around 40.
Monday
Rain likely. Cloudy, with a high near 54.
Monday Night
Rain likely. Mostly cloudy, with a low around 44.
Tuesday
Rain likely. Mostly cloudy, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
8:01 pm PDT Mar 10, 2026
Forecast Valid:
9pm PDT Mar 10, 2026-6pm PDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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