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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Overcast

42°F

6°C

Humidity 95%
Wind Speed E 6 MPH
Barometer 29.63 in (1003.39 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 25 Dec 05:56 AM PST
Extended Forecast for

Lewiston ID

  • Christmas Day

    Christmas Day: A slight chance of rain before 7am, then a chance of rain after 10am. Mostly cloudy, with a high near 51. East wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Chance Rain

  • Tonight

    Tonight: A chance of rain before 10pm, then a chance of rain after 1am. Mostly cloudy, with a low around 38. Southeast wind around 6 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance Rain

  • Friday

    Friday: Rain. High near 46. Southwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Rain

  • Friday Night

    Friday Night: Rain and snow, becoming all snow after 1am. Low around 33. West wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow

  • Saturday

    Saturday: A 30 percent chance of snow before 10am. Partly sunny, with a high near 38. West wind 11 to 13 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Chance Snow
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

Detailed Forecast

Christmas Day
A slight chance of rain before 7am, then a chance of rain after 10am. Mostly cloudy, with a high near 51. East wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of rain before 10pm, then a chance of rain after 1am. Mostly cloudy, with a low around 38. Southeast wind around 6 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain. High near 46. Southwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain and snow, becoming all snow after 1am. Low around 33. West wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow before 10am. Partly sunny, with a high near 38. West wind 11 to 13 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Partly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Mostly cloudy, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
Mostly cloudy, with a high near 44.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.39°N 117°W (Elev. 1385 ft)
Last Update:
2:17 am PST Dec 25, 2025
Forecast Valid:
6am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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