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

Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Overcast

54°F

12°C

Humidity 71%
Wind Speed S 20 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 08 Dec 05:05 PM PST
Extended Forecast for

2 Miles WSW Lewiston ID

Wind Advisory December 8, 07:00pm until December 9, 07:00am
Click here for hazard details and duration
Wind Advisory

  • This Afternoon

    This Afternoon: Rain. High near 54. South wind around 11 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Rain

  • Tonight

    Tonight: Rain, mainly after 1am. Low around 50. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain, mainly before 10am. High near 55. Southwest wind 6 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 46. Southeast wind 6 to 10 mph becoming southwest 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: 46 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 60. Southwest wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely. Cloudy, with a low around 54. Chance of precipitation is 70%.

    Low: 54 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly before 10am. Cloudy, with a high near 57. Chance of precipitation is 60%.

    High: 57 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Rain. High near 54. South wind around 11 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly after 1am. Low around 50. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain, mainly before 10am. High near 55. Southwest wind 6 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Low around 46. Southeast wind 6 to 10 mph becoming southwest 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.
Wednesday
Rain. High near 60. Southwest wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain likely. Cloudy, with a low around 54. Chance of precipitation is 70%.
Thursday
Rain likely, mainly before 10am. Cloudy, with a high near 57. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 48.
Friday
Mostly cloudy, with a high near 58.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 55.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 43.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 53.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 42.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Lewiston ID
 46.38°N 117.03°W (Elev. 1201 ft)
Last Update:
3:17 pm PST Dec 8, 2025
Forecast Valid:
5pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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