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

DW6879 Union (D6879)

Lat: 45.1985°NLon: 117.86483°WElev: 2792.0ft.

NA

46°F

8°C

Humidity 76%
Wind Speed ESE 10 MPH
Barometer 29.58 in (1001.69 mb)
Dewpoint 39°F (4°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 25 Dec 05:45 AM PST
Extended Forecast for

4 Miles ENE Union OR

  • Christmas Day

    Christmas Day: A slight chance of rain before 7am, then a chance of rain after 10am.  Partly sunny, with a high near 48. Breezy, with a southeast wind 13 to 22 mph, with gusts as high as 31 mph.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Chance Rain
    and Breezy

  • Tonight

    Tonight: Snow likely, possibly mixed with rain, mainly after 4am.  Snow level 4900 feet lowering to 4300 feet after midnight . Mostly cloudy, with a low around 35. Southeast wind 16 to 18 mph, with gusts as high as 23 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 35 °F

    Mostly Cloudy
    then
    Rain/Snow
    Likely

  • Friday

    Friday: Rain and snow.  Snow level 3800 feet. High near 41. South wind around 18 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow

  • Friday Night

    Friday Night: Snow.  Low around 26. West wind 18 to 20 mph, with gusts as high as 26 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 26 °F

    Snow

  • Saturday

    Saturday: Snow likely, mainly before 10am.  Mostly cloudy, with a high near 32. Northwest wind 18 to 20 mph, with gusts as high as 26 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 32 °F

    Snow Likely
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

Christmas Day
A slight chance of rain before 7am, then a chance of rain after 10am. Partly sunny, with a high near 48. Breezy, with a southeast wind 13 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Snow likely, possibly mixed with rain, mainly after 4am. Snow level 4900 feet lowering to 4300 feet after midnight . Mostly cloudy, with a low around 35. Southeast wind 16 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
Rain and snow. Snow level 3800 feet. High near 41. South wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday Night
Snow. Low around 26. West wind 18 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Saturday
Snow likely, mainly before 10am. Mostly cloudy, with a high near 32. Northwest wind 18 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 36.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Union OR
 45.24°N 117.81°W (Elev. 3642 ft)
5:20 am PST Dec 25, 2025
6am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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