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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.

Rain

54°F

12°C

Humidity 76%
Wind Speed WNW 21 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 09 Dec 04:20 AM PST
Extended Forecast for

Clarkston WA

Wind Advisory December 9, 04:32am until December 9, 07:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 9, 04:32am until December 9, 07:00am

    NOW until 7:00am Tue

    Wind Advisory

  • Overnight

    Low: 57 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain, mainly before 7am. High near 60. Breezy, with a west wind 13 to 18 mph becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain. Temperature falling to near 49 by 9pm, then rising to around 55 during the remainder of the night. East wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F⇑

    Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain. Cloudy, with a high near 66. Southwest wind around 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 57. Southwest wind 13 to 15 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Rain. Steady temperature around 57. Breezy, with a west wind around 23 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain, mainly before 7am. High near 60. Breezy, with a west wind 13 to 18 mph becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Temperature falling to near 49 by 9pm, then rising to around 55 during the remainder of the night. East wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 40 percent chance of rain. Cloudy, with a high near 66. Southwest wind around 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 57. Southwest wind 13 to 15 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 54.
Friday
Mostly cloudy, with a high near 65.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 60.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 46.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 58.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 45.
Monday
Rain likely. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clarkston WA
 46.42°N 117.04°W (Elev. 761 ft)
Last Update:
2:52 am PST Dec 9, 2025
Forecast Valid:
4am PST Dec 9, 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