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

40°F

4°C

Humidity 91%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 26 Dec 03:50 AM PST
Extended Forecast for

5 Miles E Cascade Locks OR

  • Overnight

    Overnight: Showers.  Low around 41. East wind around 6 mph becoming west.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Showers

  • Friday

    Friday: Rain showers before 3pm, then rain likely, possibly mixed with snow showers between 3pm and 4pm, then rain showers likely after 4pm.  High near 44. Breezy, with a west wind 10 to 18 mph, with gusts as high as 31 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 44 °F

    Showers
    Likely then
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: Rain, possibly mixed with snow showers, mainly before 3am.  Snow level 1500 feet. Steady temperature around 40. Windy, with a west wind 25 to 28 mph, with gusts as high as 46 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 40 °F

    Rain/Snow and
    Windy

  • Saturday

    Saturday: Rain likely, possibly mixed with snow showers, mainly before 10am.  Snow level 900 feet. Mostly cloudy, with a high near 40. Windy, with a west wind 15 to 24 mph, with gusts as high as 41 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow
    Likely and
    Windy then
    Chance
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34. West wind around 7 mph.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Sunday Night

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

    Low: 33 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

  • Monday Night

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

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers. Low around 41. East wind around 6 mph becoming west. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain showers before 3pm, then rain likely, possibly mixed with snow showers between 3pm and 4pm, then rain showers likely after 4pm. High near 44. Breezy, with a west wind 10 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Friday Night
Rain, possibly mixed with snow showers, mainly before 3am. Snow level 1500 feet. Steady temperature around 40. Windy, with a west wind 25 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday
Rain likely, possibly mixed with snow showers, mainly before 10am. Snow level 900 feet. Mostly cloudy, with a high near 40. Windy, with a west wind 15 to 24 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday Night
Mostly cloudy, with a low around 34. West wind around 7 mph.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 33.
Tuesday
Mostly cloudy, with a high near 41.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 35.
Wednesday
A chance of rain. Mostly cloudy, with a high near 43.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 37.
New Year's Day
Rain likely. Cloudy, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Cascade Locks OR
 45.7°N 121.79°W (Elev. 157 ft)
3:46 am PST Dec 26, 2025
4am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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Hourly Weather Forecast

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