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

32°F

0°C

Humidity 80%
Wind Speed NW 3 MPH
Barometer 30.49 in (1032.51 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 18 Jan 06:20 PM PST
Extended Forecast for

Lewiston ID

Air Stagnation Advisory January 18, 06:36pm until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 06:36pm until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Tonight

    Low: 28 °F

    Areas Fog
    then Mostly
    Cloudy

  • M.L.King Day

    M.L.King Day: Areas of fog before 3pm.  Otherwise, mostly sunny, with a high near 39. Calm wind.

    High: 39 °F

    Areas Fog

  • Monday Night

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

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 41. Calm wind.

    High: 41 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 29 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Tonight
Areas of fog before 10pm. Otherwise, mostly cloudy, with a low around 28. Calm wind.
M.L.King Day
Areas of fog before 3pm. Otherwise, mostly sunny, with a high near 39. Calm wind.
Monday Night
Partly cloudy, with a low around 28. Calm wind.
Tuesday
Partly sunny, with a high near 41. Calm wind.
Tuesday Night
Partly cloudy, with a low around 27. Calm wind.
Wednesday
Mostly sunny, with a high near 41.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 42.
Thursday Night
A slight chance of rain and snow after 10pm. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.39°N 117°W (Elev. 1385 ft)
3:07 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