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 29.97 in (1014.9 mb)
Dewpoint 27°F (-3°C)
Visibility 0.24 mi
Last update 01 Jan 04:35 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

  • Overnight

    Low: 30 °F

    Patchy
    Freezing Fog

  • New Year's Day

    New Year's Day: A 30 percent chance of rain after 1pm. Patchy freezing fog before 10am. Cloudy, with a high near 41. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    High: 41 °F

    Patchy
    Freezing Fog
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 37. Light east wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain

  • Friday

    Friday: Rain likely before 10am. Cloudy, with a high near 48. Light south wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Rain Likely
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38. Southeast wind around 6 mph.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of rain. Partly sunny, with a high near 49.

    High: 49 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

  • Sunday

    Sunday: A 30 percent chance of rain. Mostly cloudy, with a high near 51.

    High: 51 °F

    Chance Rain

Detailed Forecast

Overnight
Patchy freezing fog. Mostly cloudy, with a low around 30. Light east wind.
New Year's Day
A 30 percent chance of rain after 1pm. Patchy freezing fog before 10am. Cloudy, with a high near 41. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain. Low around 37. Light east wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely before 10am. Cloudy, with a high near 48. Light south wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly cloudy, with a low around 38. Southeast wind around 6 mph.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 49.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 40.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 51.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 39.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 49.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Tuesday
A 20 percent chance of rain. Mostly cloudy, with a high near 48.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 36.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.39°N 117°W (Elev. 1385 ft)
Last Update:
2:53 am PST Jan 1, 2026
Forecast Valid:
4am PST Jan 1, 2026-6pm PST Jan 7, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation