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 >

Hazardous Weather Conditions

Current conditions at

Sacramento Mather Airport (KMHR)

Lat: 38.55996°NLon: 121.28397°WElev: 92.0ft.

Rain

55°F

13°C

Humidity 100%
Wind Speed S 6 MPH
Barometer 29.63 in (1003.39 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 24 Dec 08:15 AM PST
Extended Forecast for

La Riviera CA

Flood Watch December 24, 08:30am until December 26, 04:00pm
Flood Advisory until December 24, 01:30pm
High Wind Warning until December 25, 04:00pm
Click here for hazard details and duration
Flood Watch
Flood Advisory
High Wind Warning
  •  
    Flood Watch December 24, 08:30am until December 26, 04:00pm
    Flood Advisory until December 24, 01:30pm
    High Wind Warning until December 25, 04:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 58 °F

    Showers
    Likely

  • Tonight

    Tonight: Rain and possibly a thunderstorm. Steady temperature around 56. Breezy, with a south southeast wind 17 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Rain and
    Breezy

  • Christmas Day

    Christmas Day: Rain and possibly a thunderstorm before 7am, then showers and possibly a thunderstorm after 7am. High near 55. Breezy, with a south wind 22 to 24 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 55 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 49. South wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Showers

  • Friday

    Friday: Rain. High near 53. South southeast wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    High: 53 °F

    Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Rain Likely

  • Saturday

    Saturday: A 20 percent chance of rain before 10am. Partly sunny, with a high near 52.

    High: 52 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Today
Rain likely, mainly between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 58. South southeast wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain and possibly a thunderstorm. Steady temperature around 56. Breezy, with a south southeast wind 17 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Christmas Day
Rain and possibly a thunderstorm before 7am, then showers and possibly a thunderstorm after 7am. High near 55. Breezy, with a south wind 22 to 24 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 49. South wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Rain. High near 53. South southeast wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Friday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Saturday
A 20 percent chance of rain before 10am. Partly sunny, with a high near 52.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Partly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Partly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
Partly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
La Riviera CA
 38.57°N 121.35°W (Elev. 49 ft)
Last Update:
1:21 am PST Dec 24, 2025
Forecast Valid:
8am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation