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.

Overcast

43°F

6°C

Humidity 75%
Wind Speed ESE 4 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 18 Feb 05:00 PM PST
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: A 40 percent chance of showers. Mostly cloudy, with a high near 41. South southeast wind around 6 mph.

    High: 41 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of rain and snow showers before 5am, then a chance of rain showers. Mostly cloudy, with a low around 31. Southeast wind around 5 mph becoming light and variable. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 31 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A 30 percent chance of snow showers, mainly after 10am. Mostly cloudy, then gradually becoming sunny, with a high near 38. Wind chill values between 25 and 32. North northwest wind around 9 mph. Little or no snow accumulation expected.

    High: 38 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. North wind 5 to 7 mph becoming calm after midnight.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of snow before 1pm, then a slight chance of rain and snow between 1pm and 4pm, then a slight chance of rain after 4pm. Partly sunny, with a high near 42. Light and variable wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Friday Night

    Friday Night: A slight chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 49. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 49 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Sunday

    Sunday: Rain, mainly after 10am. Mostly cloudy, with a high near 53.

    High: 53 °F

    Rain

Detailed Forecast

This Afternoon
A 40 percent chance of showers. Mostly cloudy, with a high near 41. South southeast wind around 6 mph.
Tonight
A chance of rain and snow showers before 5am, then a chance of rain showers. Mostly cloudy, with a low around 31. Southeast wind around 5 mph becoming light and variable. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday
A 30 percent chance of snow showers, mainly after 10am. Mostly cloudy, then gradually becoming sunny, with a high near 38. Wind chill values between 25 and 32. North northwest wind around 9 mph. Little or no snow accumulation expected.
Thursday Night
Partly cloudy, with a low around 28. North wind 5 to 7 mph becoming calm after midnight.
Friday
A slight chance of snow before 1pm, then a slight chance of rain and snow between 1pm and 4pm, then a slight chance of rain after 4pm. Partly sunny, with a high near 42. Light and variable wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
A slight chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 49. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 39.
Sunday
Rain, mainly after 10am. Mostly cloudy, with a high near 53.
Sunday Night
Rain. Mostly cloudy, with a low around 40.
Monday
Rain. Cloudy, with a high near 49.
Monday Night
Rain likely. Mostly cloudy, with a low around 39.
Tuesday
Rain likely. Mostly cloudy, with a high near 48.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 38.
Wednesday
Rain likely. Mostly cloudy, with a high near 49.
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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:
1:26 pm PST Feb 18, 2026
Forecast Valid:
5pm PST Feb 18, 2026-6pm PST Feb 25, 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