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

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

Lat: 46.37472°NLon: 117.01444°WElev: 1437.0ft.

Overcast

28°F

-2°C

Humidity 86%
Wind Speed S 4 MPH
Barometer 30.35 in (1027.77 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 20 Jan 04:20 AM PST
Extended Forecast for

Clarkston WA

Air Stagnation Advisory January 20, 04:36am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 04:36am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Today

    High: 42 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40. Calm wind.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 39. Calm wind.

    High: 39 °F

    Mostly Cloudy

  • Thursday Night

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

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 42. Calm wind.
Tonight
Partly cloudy, with a low around 28. Calm wind.
Wednesday
Mostly sunny, with a high near 40. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 29. Calm wind.
Thursday
Mostly cloudy, with a high near 39. Calm wind.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 41.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 43. Chance of precipitation is 20%.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
Clarkston WA
 46.42°N 117.04°W (Elev. 761 ft)
1:12 am PST Jan 20, 2026
4am 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