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

Hermiston, Hermiston Municipal Airport (KHRI)

Lat: 45.82583°NLon: 119.26111°WElev: 636.0ft.

Overcast

36°F

2°C

Humidity 93%
Wind Speed ENE 3 MPH
Barometer 29.63 in (1003.39 mb)
Dewpoint 34°F (1°C)
Visibility 7.00 mi
Last update 25 Dec 07:20 AM PST
Extended Forecast for

3 Miles NE Paterson WA

  • Christmas Day

    Christmas Day: A 40 percent chance of rain, mainly before 10am.  Partly sunny, with a high near 46. North wind around 7 mph.

    High: 46 °F

    Chance Rain

  • Tonight

    Tonight: A chance of rain before 10pm, then a chance of rain after 1am.  Mostly cloudy, with a low around 33. Light east wind.  Chance of precipitation is 40%.

    Low: 33 °F

    Chance Rain

  • Friday

    Friday: A 50 percent chance of rain.  Mostly cloudy, with a high near 46. Southwest wind 6 to 16 mph, with gusts as high as 22 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly before 10pm.  Snow level 1900 feet lowering to 1000 feet after midnight . Partly cloudy, with a low around 33. Southwest wind around 17 mph, with gusts as high as 24 mph.

    Low: 33 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 42. Northwest wind 7 to 10 mph.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 37.

    High: 37 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 34.

    High: 34 °F

    Patchy Fog
    then Partly
    Sunny

Detailed Forecast

Christmas Day
A 40 percent chance of rain, mainly before 10am. Partly sunny, with a high near 46. North wind around 7 mph.
Tonight
A chance of rain before 10pm, then a chance of rain after 1am. Mostly cloudy, with a low around 33. Light east wind. Chance of precipitation is 40%.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 46. Southwest wind 6 to 16 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 30 percent chance of rain, mainly before 10pm. Snow level 1900 feet lowering to 1000 feet after midnight . Partly cloudy, with a low around 33. Southwest wind around 17 mph, with gusts as high as 24 mph.
Saturday
Mostly sunny, with a high near 42. Northwest wind 7 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 37.
Sunday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 22.
Monday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 34.
Monday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 23.
Tuesday
Patchy fog. Otherwise, mostly cloudy, with a high near 35.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 25.
Wednesday
Patchy fog. Otherwise, mostly cloudy, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Paterson WA
 45.97°N 119.57°W (Elev. 600 ft)
7:26 am PST Dec 25, 2025
7am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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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