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

SCE Camp Nelson (SE333)

Lat: 36.1402°NLon: 118.6159°WElev: 4836.0ft.

NA

41°F

5°C

Humidity 91%
Wind Speed ENE 0 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 25 Dec 04:20 PM PST
Extended Forecast for

18 Miles ENE Porterville CA

Flood Watch December 25, 04:37pm until December 26, 04:00pm
Winter Storm Warning December 25, 04:37pm until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
Winter Storm Warning
  •  
    Flood Watch December 25, 04:37pm until December 26, 04:00pm
    Winter Storm Warning December 25, 04:37pm until December 26, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Christmas Day

    High: 45 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm.  Steady temperature around 44. South wind around 5 mph.  Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 44 °F

    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before 1pm, then rain, mainly after 1pm.  Snow level 6200 feet lowering to 5500 feet in the afternoon . Steady temperature around 41. Northwest wind around 5 mph becoming east southeast in the afternoon.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 41 °F

    Showers

  • Friday Night

    Friday Night: Rain and snow likely, becoming all snow after 9pm.  Mostly cloudy, with a low around 32. Calm wind.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Saturday

    Saturday: A slight chance of snow before 1pm, then a slight chance of rain.  Mostly sunny, with a high near 39. Calm wind becoming west around 5 mph.  Chance of precipitation is 20%.

    High: 39 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 44. East wind around 5 mph becoming calm.

    High: 44 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34. East northeast wind around 5 mph.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Christmas Day
Showers and possibly a thunderstorm. High near 45. South wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Steady temperature around 44. South wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Friday
Showers and possibly a thunderstorm before 1pm, then rain, mainly after 1pm. Snow level 6200 feet lowering to 5500 feet in the afternoon . Steady temperature around 41. Northwest wind around 5 mph becoming east southeast in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
Rain and snow likely, becoming all snow after 9pm. Mostly cloudy, with a low around 32. Calm wind. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
A slight chance of snow before 1pm, then a slight chance of rain. Mostly sunny, with a high near 39. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 31. Calm wind.
Sunday
Sunny, with a high near 44. East wind around 5 mph becoming calm.
Sunday Night
Mostly clear, with a low around 34. East northeast wind around 5 mph.
Monday
Sunny, with a high near 49. East northeast wind around 5 mph becoming calm in the morning.
Monday Night
Mostly clear, with a low around 38. East northeast wind around 5 mph.
Tuesday
Sunny, with a high near 54. East northeast wind around 5 mph becoming calm in the morning.
Tuesday Night
Mostly clear, with a low around 43. East northeast wind around 5 mph.
Wednesday
A 20 percent chance of rain. Mostly sunny, with a high near 55. East northeast wind around 5 mph becoming calm.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 43. Calm wind.
New Year's Day
A 40 percent chance of rain. Partly sunny, with a high near 51. Calm wind becoming west around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
18 Miles ENE Porterville CA
 36.13°N 118.72°W (Elev. 4738 ft)
3:57 pm PST Dec 25, 2025
4pm PST Dec 25, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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