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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Clear

50°F

10°C

Humidity 66%
Wind Speed S 16 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 07 Dec 04:35 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: A 50 percent chance of rain. Mostly cloudy, with a high near 50. South wind around 8 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Chance Rain

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before 7pm. Increasing clouds, with a low around 42. South wind 7 to 10 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    then Mostly
    Cloudy

  • Monday

    Monday: Rain, mainly after 10am. High near 54. South wind 6 to 11 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Rain

  • Monday Night

    Monday Night: Rain. Low around 49. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain. High near 54. South wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 46. Chance of precipitation is 100%.

    Low: 46 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 56. Chance of precipitation is 90%.

    High: 56 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely. Cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.

    High: 54 °F

    Rain Likely

Detailed Forecast

This Afternoon
A 50 percent chance of rain. Mostly cloudy, with a high near 50. South wind around 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 30 percent chance of rain, mainly before 7pm. Increasing clouds, with a low around 42. South wind 7 to 10 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain, mainly after 10am. High near 54. South wind 6 to 11 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Rain. Low around 49. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 54. South wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Low around 46. Chance of precipitation is 100%.
Wednesday
Rain. High near 56. Chance of precipitation is 90%.
Wednesday Night
Rain likely. Cloudy, with a low around 49. Chance of precipitation is 70%.
Thursday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 46.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 54.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 53.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 42.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 51.
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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:
2:48 pm PST Dec 7, 2025
Forecast Valid:
4pm PST Dec 7, 2025-6pm PST Dec 14, 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