Heavy Great Lakes Snow through Friday; Watching Potential for Major Winter Storm Late Week into this Weekend

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Fog

32°F

0°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 32°F (0°C)
Visibility 0.50 mi
Last update 20 Jan 09:20 AM PST
Extended Forecast for

Newcastle WA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 48. Light north northeast wind.

    High: 48 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 33. Light east wind.

    Low: 33 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 47. Light and variable wind.

    High: 47 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 43. Calm wind.

    High: 43 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 48. Light north northeast wind.
Tonight
Mostly clear, with a low around 33. Light east wind.
Wednesday
Sunny, with a high near 47. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 32. Calm wind.
Thursday
Partly sunny, with a high near 43. Calm wind.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 44.
Friday Night
Mostly clear, with a low around 31.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
A slight chance of rain and snow after 10pm. Mostly cloudy, with a low around 34.
Sunday
A chance of rain. Mostly cloudy, with a high near 45.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 39.
Monday
A chance of rain. Mostly cloudy, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
7:01 am PST Jan 20, 2026
9am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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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