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 >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Mostly Cloudy

30°F

-1°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 30°F (-1°C)
Visibility 8.00 mi
Last update 01 Jan 01:20 PM PST
Extended Forecast for

2 Miles WSW Lewiston ID

  • New Year's Day

    New Year's Day: Rain likely, mainly after 4pm. Cloudy, with a high near 36. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 36 °F

    Rain Likely

  • Tonight

    Tonight: Rain. Low around 36. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Rain

  • Friday

    Friday: Rain, mainly before 10am. High near 48. Light southeast wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 38. Southeast wind around 7 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of rain. Partly sunny, with a high near 49. Southeast wind around 6 mph.

    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 40 percent chance of rain. Mostly cloudy, with a high near 51.

    High: 51 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Monday

    Monday: A 40 percent chance of rain. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

Detailed Forecast

New Year's Day
Rain likely, mainly after 4pm. Cloudy, with a high near 36. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain. Low around 36. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain, mainly before 10am. High near 48. Light southeast wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 38. Southeast wind around 7 mph.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 49. Southeast wind around 6 mph.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 40.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 51.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 39.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 36.
Tuesday
A 20 percent chance of rain. Mostly cloudy, with a high near 45.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 38.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Lewiston ID
 46.38°N 117.03°W (Elev. 1201 ft)
Last Update:
1:12 pm PST Jan 1, 2026
Forecast Valid:
1pm PST Jan 1, 2026-6pm PST Jan 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation