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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

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 76%
Wind Speed ENE 3 MPH
Barometer 29.53 in (1000.0 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 24 Dec 03:05 PM PST
Extended Forecast for

Clarkston WA

  • This Afternoon

    This Afternoon: A 30 percent chance of rain. Cloudy, with a steady temperature around 53. Southwest wind around 11 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Chance Rain

  • Tonight

    Tonight: A 40 percent chance of rain before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 42. Northwest wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    then Mostly
    Cloudy

  • Christmas Day

    Christmas Day: A 30 percent chance of rain, mainly after 1pm. Mostly cloudy, with a high near 55. Northeast wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 41. South wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance Rain

  • Friday

    Friday: Rain likely. Mostly cloudy, with a high near 52. Light and variable wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely before 4am, then a slight chance of rain and snow. Mostly cloudy, with a low around 36. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain Likely
    then Chance
    Rain/Snow

  • Saturday

    Saturday: A slight chance of rain and snow before 7am, then a slight chance of snow between 7am and 10am. Mostly sunny, with a high near 43. Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of rain. Cloudy, with a steady temperature around 53. Southwest wind around 11 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 40 percent chance of rain before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 42. Northwest wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Christmas Day
A 30 percent chance of rain, mainly after 1pm. Mostly cloudy, with a high near 55. Northeast wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41. South wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely. Mostly cloudy, with a high near 52. Light and variable wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain likely before 4am, then a slight chance of rain and snow. Mostly cloudy, with a low around 36. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
A slight chance of rain and snow before 7am, then a slight chance of snow between 7am and 10am. Mostly sunny, with a high near 43. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Mostly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clarkston WA
 46.42°N 117.04°W (Elev. 761 ft)
Last Update:
3:17 pm PST Dec 24, 2025
Forecast Valid:
3pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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