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

Porterville, Porterville Municipal Airport (KPTV)

Lat: 36.03333°NLon: 119.06667°WElev: 443.0ft.

Mostly Cloudy

54°F

12°C

Humidity 93%
Wind Speed ESE 6 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 24 Dec 11:20 PM PST
Extended Forecast for

3 Miles SW Porterville CA

Flood Watch December 24, 11:39pm until December 26, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 24, 11:39pm until December 26, 04:00pm

    NOW until 4:00pm Fri

    Flood Watch

  • Tonight

    Low: 51 °F

    Rain

  • Christmas Day

    Christmas Day: Rain. High near 58. South southeast wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 58 °F

    Rain

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Steady temperature around 54. East southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers

  • Friday

    Friday: Rain. High near 54. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain before 4am. Mostly cloudy, with a low around 43. East wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 51. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 51 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 38. North wind around 5 mph becoming calm.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50. Calm wind.

    High: 50 °F

    Mostly Sunny

Detailed Forecast

Tonight
Rain, mainly after 4am. Low around 51. East southeast wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Christmas Day
Rain. High near 58. South southeast wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm. Steady temperature around 54. East southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Rain. High near 54. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 50 percent chance of rain before 4am. Mostly cloudy, with a low around 43. East wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 51. Calm wind becoming west northwest around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 38. North wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 50. Calm wind.
Sunday Night
Partly cloudy, with a low around 36. Calm wind.
Monday
Mostly sunny, with a high near 51. Calm wind.
Monday Night
Partly cloudy, with a low around 36. Calm wind.
Tuesday
Mostly sunny, with a high near 52. Calm wind.
Tuesday Night
Mostly cloudy, with a low around 39. Calm wind.
Wednesday
A 20 percent chance of rain. Mostly cloudy, with a high near 55. Calm wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Porterville CA
 36.04°N 119.06°W (Elev. 427 ft)
Last Update:
10:56 pm PST Dec 24, 2025
Forecast Valid:
11pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
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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