Arctic Front Brings Winter Weather and Colder Temperatures to the Eastern U.S.

A series of cold fronts will bring heavy lake effect snow to the northern Great Lakes. The fronts will merge over the Ohio Valley and bring colder temperatures east of the Mississippi River later today into the end of the week. Additionally, wintry weather will develop over the Ohio Valley, Appalachians, and Northeast as rain switches over to snow tonight into Thursday morning. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Partly Cloudy

50°F

10°C

Humidity 82%
Wind Speed WNW 5 MPH
Barometer 30.48 in (1032.17 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 14 Jan 04:53 PM PST
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Patchy fog.  Otherwise, mostly cloudy, with a low around 42. Calm wind becoming north northeast around 5 mph after midnight.

    Low: 42 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy dense fog before 7am.  Otherwise, partly sunny, with a high near 49. North wind around 7 mph.

    High: 49 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. North northeast wind around 6 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 52. Northeast wind around 6 mph.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. East northeast wind around 5 mph.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 42. Calm wind becoming north northeast around 5 mph after midnight.
Thursday
Patchy dense fog before 7am. Otherwise, partly sunny, with a high near 49. North wind around 7 mph.
Thursday Night
Partly cloudy, with a low around 38. North northeast wind around 6 mph.
Friday
Sunny, with a high near 52. Northeast wind around 6 mph.
Friday Night
Mostly clear, with a low around 38. East northeast wind around 5 mph.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 51.
Sunday Night
Mostly clear, with a low around 36.
M.L.King Day
Sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 38.
Wednesday
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.52°N 122.17°W (Elev. 400 ft)
1:26 pm PST Jan 14, 2026
5pm PST Jan 14, 2026-6pm PST Jan 21, 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