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.

Rain

58°F

14°C

Humidity 90%
Wind Speed N 10 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 25 Dec 12:56 PM PST
Extended Forecast for

7 Miles W Porterville CA

Flood Watch December 25, 01:04pm until December 26, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 25, 01:04pm until December 26, 04:00pm

    NOW until 4:00pm Fri

    Flood Watch

  • Christmas Day

    High: 57 °F

    Showers

  • Tonight

    Tonight: 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: Showers and possibly a thunderstorm before 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 57. East southeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers

  • Friday Night

    Friday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 43. East southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Rain Likely
    then Slight
    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 50. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 50 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41. North wind around 5 mph becoming calm.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 49. Calm wind.

    High: 49 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Christmas Day
Showers and possibly a thunderstorm. High near 57. East southeast wind around 10 mph, with gusts as high as 15 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 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
Showers and possibly a thunderstorm before 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 57. East southeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 43. East southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 50. Calm wind becoming west northwest around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 41. North wind around 5 mph becoming calm.
Sunday
Partly sunny, with a high near 49. Calm wind.
Sunday Night
Partly cloudy, with a low around 37. Calm wind.
Monday
Mostly sunny, with a high near 48. Calm wind becoming northwest around 5 mph.
Monday Night
Partly cloudy, with a low around 37. Calm wind.
Tuesday
Mostly sunny, with a high near 51. Calm wind.
Tuesday Night
Partly cloudy, with a low around 39. Calm wind.
Wednesday
A 10 percent chance of rain. Partly sunny, with a high near 53. Calm wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles W Porterville CA
 36.05°N 119.15°W (Elev. 331 ft)
Last Update:
12:57 pm PST Dec 25, 2025
Forecast Valid:
1pm PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation