Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

43°F

6°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 18 Jan 06:20 PM PST
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Mostly clear, with a low around 33. East northeast wind 3 to 5 mph.

    Low: 33 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 51. Light north northeast wind.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48. Light north wind.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 33. Light east wind.

    Low: 33 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 45.

    High: 45 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A slight chance of rain before 4am, then a chance of rain and snow.  Mostly cloudy, with a low around 36.

    Low: 36 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 33. East northeast wind 3 to 5 mph.
M.L.King Day
Sunny, with a high near 51. Light north northeast wind.
Monday Night
Partly cloudy, with a low around 33. Calm wind.
Tuesday
Mostly sunny, with a high near 48. Light north wind.
Tuesday Night
Partly cloudy, with a low around 33. Light east wind.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
Mostly cloudy, with a high near 45.
Thursday Night
A slight chance of rain before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 36.
Friday
A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 45.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 36.
Saturday
A chance of rain and snow. Partly sunny, with a high near 44.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 36.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
1:26 pm PST Jan 18, 2026
6pm PST Jan 18, 2026-6pm PST Jan 25, 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