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

Tracking Winter Storm and Severe Weather Impacts Through This Weekend

Heavy mountain snow will continue into Thursday afternoon across the Cascades. Two fast moving storms will track from the southern Rockies to the Great Lakes Thursday and then Friday into Sunday with areas of gusty winds, and heavy snow. In the Southeast U.S., severe thunderstorms and heavy to excessive rainfall are forecast on Friday. 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 80%
Wind Speed S 10 MPH
Barometer 29.76 in (1007.79 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 07 Jan 07:00 PM PST
Extended Forecast for

Newcastle WA

  • 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, with gusts as high as 20 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 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 41. South wind around 7 mph.

    Low: 41 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain before 10am. Mostly cloudy, with a high near 48. South wind 6 to 8 mph.

    High: 48 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37. Southeast wind 3 to 5 mph.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 50 percent 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

  • Sunday Night

    Sunday Night: A chance of rain. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

Detailed Forecast

Tonight
Rain likely, possibly mixed with snow showers, mainly before 3am. Mostly cloudy, with a low around 35. South wind 6 to 9 mph, with gusts as high as 20 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 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 41. South wind around 7 mph.
Friday
A 30 percent chance of rain before 10am. Mostly cloudy, with a high near 48. South wind 6 to 8 mph.
Friday Night
Mostly cloudy, with a low around 37. Southeast wind 3 to 5 mph.
Saturday
Mostly cloudy, with a high near 49.
Saturday Night
A 50 percent 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 45.
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
 47.54°N 122.17°W (Elev. 397 ft)
Last Update:
7:01 pm PST Jan 7, 2026
Forecast Valid:
7pm PST Jan 7, 2026-6pm PST Jan 14, 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