National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Clear

39°F

4°C

Humidity 60%
Wind Speed WNW 3 MPH
Barometer 30.39 in (1029.12 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 30 Dec 01:20 PM PST
Extended Forecast for

2 Miles NNE Lewiston ID

Air Stagnation Advisory until January 1, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory until January 1, 12:00pm

    NOW until 12:00pm Thu

    Air Stagnation Advisory

  • This Afternoon

    High: 44 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 31. Light east wind.

    Low: 31 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 44. Calm wind.

    High: 44 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly cloudy, with a high near 44. Calm wind.

    High: 44 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of rain after 10pm. Cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

  • Friday

    Friday: A 50 percent chance of rain. Mostly cloudy, with a high near 49.

    High: 49 °F

    Chance Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 44. Light east wind.
Tonight
Mostly clear, with a low around 31. Light east wind.
Wednesday
Partly sunny, with a high near 44. Calm wind.
Wednesday Night
Partly cloudy, with a low around 32. Calm wind.
New Year's Day
Mostly cloudy, with a high near 44. Calm wind.
Thursday Night
A 40 percent chance of rain after 10pm. Cloudy, with a low around 37.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 49.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 42.
Saturday
A 50 percent chance of rain. Mostly cloudy, with a high near 53.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 40.
Sunday
A 20 percent chance of rain. Partly sunny, with a high near 51.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Lewiston ID
 46.43°N 117.01°W (Elev. 784 ft)
Last Update:
1:32 pm PST Dec 30, 2025
Forecast Valid:
1pm PST Dec 30, 2025-6pm PST Jan 5, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation