Heavy Great Lakes Snow through Friday; Watching Potential for Major Winter Storm Late Week into this Weekend

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Overcast

30°F

-1°C

Humidity 86%
Wind Speed W 3 MPH
Barometer 30.45 in (1031.16 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 20 Jan 09:35 AM PST
Extended Forecast for

Lewiston ID

Air Stagnation Advisory January 20, 09:53am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 09:53am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Today

    High: 33 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37. Calm wind.

    High: 37 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 36. Calm wind.

    High: 36 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Today
Mostly cloudy, with a high near 33. Calm wind.
Tonight
Partly cloudy, with a low around 25. Calm wind.
Wednesday
Mostly sunny, with a high near 37. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 27. Calm wind.
Thursday
Mostly cloudy, with a high near 36. Calm wind.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Mostly sunny, with a high near 37.
Friday Night
Mostly clear, with a low around 24.
Saturday
Mostly sunny, with a high near 38.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 20%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 44. Chance of precipitation is 30%.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.39°N 116.97°W (Elev. 1407 ft)
8:52 am PST Jan 20, 2026
9am 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