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

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

40°F

4°C

Humidity 85%
Wind Speed N 0 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 20 Jan 06:53 PM PST
Extended Forecast for

3 Miles ENE Newcastle WA

  • Tonight

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

    Low: 33 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50. Calm wind.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 47. Calm wind.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 33. Calm wind.
Wednesday
Mostly sunny, with a high near 50. Calm wind.
Wednesday Night
Partly cloudy, with a low around 31. Calm wind.
Thursday
Mostly sunny, with a high near 47. Calm wind.
Thursday Night
Partly cloudy, with a low around 31. Calm wind.
Friday
Sunny, with a high near 48.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 47.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
A slight chance of rain after 10am. Partly sunny, with a high near 47.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36.
Monday
A chance of rain. Mostly cloudy, with a high near 49.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 38.
Tuesday
A slight chance of rain. Partly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Newcastle WA
 47.58°N 122.09°W (Elev. 200 ft)
7:01 pm PST Jan 20, 2026
7pm PST Jan 20, 2026-6pm PST Jan 27, 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