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

Critical Fire Weather in the High Plains and Midwest; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central/southern High Plains and portions of the Midwest. Two Pacific storms will continue to bring heavy mountain snow and gusty winds to the western U.S. through Thursday. A swath of wintry weather, including heavy snow and a wintry mix, is expected from the Northern Plains to New England. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Mostly Cloudy

41°F

5°C

Humidity 75%
Wind Speed S 8 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 18 Feb 11:00 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: Rain and snow showers likely, mainly between 3pm and 4pm. Mostly cloudy, with a high near 41. South southwest wind 3 to 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: A chance of rain and snow showers before 1am, then a slight chance of snow showers between 1am and 3am. Mostly cloudy, with a low around 29. Light and variable wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 29 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A 20 percent chance of snow showers after 10am. Partly sunny, with a high near 40. Wind chill values between 24 and 34. North northwest wind around 7 mph.

    High: 40 °F

    Slight Chance
    Snow Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. Light and variable wind.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of snow between 10am and 4pm, then a chance of rain and snow. Partly sunny, with a high near 43. South southwest wind 3 to 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 43 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow before 10pm, then a slight chance of snow. Mostly cloudy, with a low around 33. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Mostly cloudy, with a high near 48. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 48 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance
    Rain/Snow

  • Sunday

    Sunday: Rain, mainly after 10am. Mostly cloudy, with a high near 51.

    High: 51 °F

    Rain

Detailed Forecast

Today
Rain and snow showers likely, mainly between 3pm and 4pm. Mostly cloudy, with a high near 41. South southwest wind 3 to 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A chance of rain and snow showers before 1am, then a slight chance of snow showers between 1am and 3am. Mostly cloudy, with a low around 29. Light and variable wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday
A 20 percent chance of snow showers after 10am. Partly sunny, with a high near 40. Wind chill values between 24 and 34. North northwest wind around 7 mph.
Thursday Night
Partly cloudy, with a low around 28. Light and variable wind.
Friday
A slight chance of snow between 10am and 4pm, then a chance of rain and snow. Partly sunny, with a high near 43. South southwest wind 3 to 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday Night
A chance of rain and snow before 10pm, then a slight chance of snow. Mostly cloudy, with a low around 33. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Mostly cloudy, with a high near 48. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday Night
A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 39.
Sunday
Rain, mainly after 10am. Mostly cloudy, with a high near 51.
Sunday Night
Rain. Mostly cloudy, with a low around 40.
Monday
Rain. Mostly cloudy, with a high near 50.
Monday Night
Rain likely. Mostly cloudy, with a low around 38.
Tuesday
Rain likely. Mostly cloudy, with a high near 49.
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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:
7:01 am PST Feb 18, 2026
Forecast Valid:
11am PST Feb 18, 2026-6pm PST Feb 24, 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