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

Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

41°F

5°C

Humidity 75%
Wind Speed NNE 5 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 15 Feb 10:15 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: Sunny, with a high near 45. North wind around 5 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: A chance of rain and snow after 4am. Mostly cloudy, with a low around 34. Calm wind becoming south southeast around 5 mph after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Washington's Birthday

    Washington's Birthday: Rain, possibly mixed with snow, mainly before 4pm. High near 40. South southwest wind 8 to 10 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow

  • Monday Night

    Monday Night: A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 32. Southeast wind 5 to 7 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Tuesday

    Tuesday: Rain likely, possibly mixed with snow, mainly before 4pm. Mostly cloudy, with a high near 43. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: A chance of rain and snow, mainly before 10pm. Mostly cloudy, with a low around 31. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Thursday

    Thursday: A chance of snow before 4pm, then a chance of rain and snow. Partly sunny, with a high near 40.

    High: 40 °F

    Chance Snow
    then Chance
    Rain/Snow

Detailed Forecast

Today
Sunny, with a high near 45. North wind around 5 mph.
Tonight
A chance of rain and snow after 4am. Mostly cloudy, with a low around 34. Calm wind becoming south southeast around 5 mph after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.
Washington's Birthday
Rain, possibly mixed with snow, mainly before 4pm. High near 40. South southwest wind 8 to 10 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday Night
A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 32. Southeast wind 5 to 7 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Tuesday
Rain likely, possibly mixed with snow, mainly before 4pm. Mostly cloudy, with a high near 43. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday Night
A chance of rain and snow, mainly before 10pm. Mostly cloudy, with a low around 31. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Wednesday
A chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 32.
Thursday
A chance of snow before 4pm, then a chance of rain and snow. Partly sunny, with a high near 40.
Thursday Night
A chance of rain and snow before 7pm, then a chance of snow. Mostly cloudy, with a low around 32.
Friday
A chance of rain and snow. Partly sunny, with a high near 42.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 34.
Saturday
Rain and snow likely. Mostly cloudy, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.55°N 122.14°W (Elev. 538 ft)
Last Update:
7:01 am PST Feb 15, 2026
Forecast Valid:
10am PST Feb 15, 2026-6pm PST Feb 21, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation