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

Tracking Late Season Winter Storms

A moderate atmospheric river will continue to bring heavy snow over the Olympics, northern Cascades and northern Rockies Friday while heavy rain may bring flooding to coastal Oregon and Washington. A winter storm will continue to push across the Great Lakes and Northeast U.S. Friday and Saturday with areas of heavy snow and high winds. Read More >

Hazardous Weather Conditions

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

light rain,mist

41°F

5°C

Humidity 95%
Wind Speed NE 5 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 40°F (4°C)
Visibility 5.00 mi
Wind Chill38°F (3°C)
Last update 12 Mar 08:56 PM PDT
Extended Forecast for

Lewiston ID

Flood Watch March 12, 11:00pm until March 14, 05:00pm
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: Rain. Low around 39. West wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: Rain. High near 47. East wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 47 °F

    Rain

  • Friday Night

    Friday Night: Rain. Low around 40. Southwest wind 5 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain

  • Saturday

    Saturday: Rain before 8am, then rain, possibly mixed with snow between 8am and 11am, then a chance of snow after 11am. High near 48. Breezy, with a west wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 48 °F

    Breezy.
    Rain/Snow
    then Chance
    Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 30. Breezy, with a southwest wind 16 to 21 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 30 °F

    Slight Chance
    Snow and
    Breezy then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain likely. Cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Monday

    Monday: A 40 percent chance of rain. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance Rain

  • Monday Night

    Monday Night: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Tonight
Rain. Low around 39. West wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 47. East wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain. Low around 40. Southwest wind 5 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Rain before 8am, then rain, possibly mixed with snow between 8am and 11am, then a chance of snow after 11am. High near 48. Breezy, with a west wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 30. Breezy, with a southwest wind 16 to 21 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Sunday
Mostly cloudy, with a high near 47.
Sunday Night
Rain likely. Cloudy, with a low around 38. Chance of precipitation is 60%.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 56.
Monday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 68.
Tuesday Night
Mostly cloudy, with a low around 46.
Wednesday
A 20 percent chance of rain. Mostly cloudy, with a high near 70.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 49.
Thursday
A 20 percent chance of rain. Mostly cloudy, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.39°N 116.97°W (Elev. 1407 ft)
Last Update:
8:37 pm PDT Mar 12, 2026
Forecast Valid:
9pm PDT Mar 12, 2026-6pm PDT Mar 19, 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