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

White Pass (TWHIT)

Lat: 46.638°NLon: 121.39°WElev: 4498.0ft.

NA

29°F

-2°C

Humidity 73%
Wind Speed ENE 7 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility 1.24 mi
Wind Chill22°F (-6°C)
Last update 18 Jan 11:32 PM PST
Extended Forecast for

4 Miles SW Chinook Pass WA

  • Overnight

    Overnight: Clear, with a low around 33. North wind around 7 mph.

    Low: 33 °F

    Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 45. North northeast wind around 6 mph becoming calm  in the morning.

    High: 45 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34. Light west wind.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 43. North wind around 5 mph becoming southeast in the afternoon.

    High: 43 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 29. East southeast wind 3 to 5 mph.

    Low: 29 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of snow after 10am.  Partly sunny, with a high near 36.

    High: 36 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A chance of snow, mainly after 10pm.  Mostly cloudy, with a low around 27.

    Low: 27 °F

    Chance Snow

Detailed Forecast

Overnight
Clear, with a low around 33. North wind around 7 mph.
M.L.King Day
Sunny, with a high near 45. North northeast wind around 6 mph becoming calm in the morning.
Monday Night
Mostly clear, with a low around 34. Light west wind.
Tuesday
Mostly sunny, with a high near 43. North wind around 5 mph becoming southeast in the afternoon.
Tuesday Night
Mostly clear, with a low around 29. East southeast wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
A slight chance of snow after 10am. Partly sunny, with a high near 36.
Thursday Night
A chance of snow, mainly after 10pm. Mostly cloudy, with a low around 27.
Friday
A chance of snow. Partly sunny, with a high near 34.
Friday Night
A chance of snow. Mostly cloudy, with a low around 27.
Saturday
Snow likely. Mostly cloudy, with a high near 32.
Saturday Night
Snow likely. Mostly cloudy, with a low around 26.
Sunday
Snow likely. Mostly cloudy, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Chinook Pass WA
 46.83°N 121.58°W (Elev. 5059 ft)
7:01 pm PST Jan 18, 2026
12am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database