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

I84 WB at Cascade Locks MP44.57 (ODT78)

Lat: 45.66931°NLon: 121.88484°WElev: 194.0ft.

NA

44°F

7°C

Humidity 91%
Wind Speed ENE 0 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 24 Dec 06:40 PM PST
Extended Forecast for

5 Miles E Cascade Locks OR

  • Tonight

    Tonight: A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 40. Breezy, with a west wind 6 to 15 mph becoming east in the evening. Winds could gust as high as 25 mph.

    Low: 40 °F

    Partly Cloudy
    then Chance
    Rain and
    Breezy

  • Christmas Day

    Christmas Day: Rain. High near 45. Breezy, with an east wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: Rain likely, mainly after 10pm. Mostly cloudy, with a low around 40. East wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Rain Likely

  • Friday

    Friday: Showers. High near 44. Breezy, with a west southwest wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Showers and
    Breezy

  • Friday Night

    Friday Night: Showers, mainly before 4am. Snow level 1600 feet. Low around 38. Windy, with a west wind around 24 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Showers and
    Windy

  • Saturday

    Saturday: A chance of rain showers before 10am, then a slight chance of rain and snow showers between 10am and 1pm, then a slight chance of rain showers after 1pm. Snow level 1100 feet rising to 1700 feet in the afternoon. Mostly cloudy, with a high near 42. Breezy. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 42 °F

    Chance
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 40. Breezy, with a west wind 6 to 15 mph becoming east in the evening. Winds could gust as high as 25 mph.
Christmas Day
Rain. High near 45. Breezy, with an east wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 40. East wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers. High near 44. Breezy, with a west southwest wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers, mainly before 4am. Snow level 1600 feet. Low around 38. Windy, with a west wind around 24 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of rain showers before 10am, then a slight chance of rain and snow showers between 10am and 1pm, then a slight chance of rain showers after 1pm. Snow level 1100 feet rising to 1700 feet in the afternoon. Mostly cloudy, with a high near 42. Breezy. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 43.
Tuesday Night
Partly cloudy, with a low around 37.
Wednesday
A chance of rain. Mostly sunny, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Cascade Locks OR
 45.7°N 121.79°W (Elev. 157 ft)
Last Update:
6:41 pm PST Dec 24, 2025
Forecast Valid:
6pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation