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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

freezing fog

27°F

-3°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 27°F (-3°C)
Visibility -0.25 mi
Last update 01 Jan 08:56 AM PST
Extended Forecast for

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

  • New Year's Day

    High: 44 °F

    Patchy
    Freezing Fog
    then Chance
    Rain

  • Tonight

    Tonight: Rain. Low around 38. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Rain

  • Friday

    Friday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 50. Light south wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Rain Likely
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. Southeast wind around 5 mph.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain. Partly sunny, with a high near 50. Southeast wind around 6 mph.

    High: 50 °F

    Chance Rain

  • Saturday Night

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

    Low: 42 °F

    Chance Rain

  • Sunday

    Sunday: A 30 percent chance of rain. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

Detailed Forecast

New Year's Day
A 30 percent chance of rain after 1pm. Patchy freezing fog before 10am. Cloudy, with a high near 44. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain. Low around 38. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 50. Light south wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly cloudy, with a low around 41. Southeast wind around 5 mph.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 50. Southeast wind around 6 mph.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 42.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 53.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 51.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 39.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 50.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.43°N 117.01°W (Elev. 784 ft)
Last Update:
7:27 am PST Jan 1, 2026
Forecast Valid:
9am PST Jan 1, 2026-6pm PST Jan 7, 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