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

Heavy Snow in the Cascades and Northern Rockies; Wintry Mix in the Northeast; High Winds in Southern California

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. today. High winds could blow down trees and power lines in the mountains of southern California this evening through Thursday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Partly Cloudy

43°F

6°C

Humidity 75%
Wind Speed S 11 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 07 Jan 04:20 PM PST
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: Rain likely, possibly mixed with snow showers, mainly after 5pm. Mostly cloudy, with a high near 41. South wind around 9 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: Rain likely, possibly mixed with snow showers, mainly before 3am. Mostly cloudy, with a low around 35. South wind 6 to 9 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Rain and snow showers likely, becoming all rain after 10am. Mostly cloudy, with a high near 43. South southwest wind around 9 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow
    Likely then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 40. South wind around 7 mph.

    Low: 40 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain before 10am. Mostly cloudy, with a high near 49. South wind around 7 mph.

    High: 49 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of rain. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain. Mostly cloudy, with a high near 49.

    High: 49 °F

    Chance Rain

Detailed Forecast

This Afternoon
Rain likely, possibly mixed with snow showers, mainly after 5pm. Mostly cloudy, with a high near 41. South wind around 9 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tonight
Rain likely, possibly mixed with snow showers, mainly before 3am. Mostly cloudy, with a low around 35. South wind 6 to 9 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
Rain and snow showers likely, becoming all rain after 10am. Mostly cloudy, with a high near 43. South southwest wind around 9 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40. South wind around 7 mph.
Friday
A 30 percent chance of rain before 10am. Mostly cloudy, with a high near 49. South wind around 7 mph.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Mostly cloudy, with a high near 49.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 41.
Sunday
A chance of rain. Mostly cloudy, with a high near 49.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 44.
Monday
A chance of rain. Mostly cloudy, with a high near 53.
Monday Night
A chance of rain. Mostly cloudy, with a low around 46.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 55.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 42.
Wednesday
A slight chance of rain. Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.52°N 122.17°W (Elev. 400 ft)
Last Update:
1:25 pm PST Jan 7, 2026
Forecast Valid:
4pm PST Jan 7, 2026-6pm PST Jan 14, 2026
 
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Additional Resources

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Chance of Precipitation