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

San Jose, San Jose International Airport (KSJC)

Lat: 37.35917°NLon: 121.92417°WElev: 59.0ft.

Rain

59°F

15°C

Humidity 67%
Wind Speed S 11 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 25 Dec 10:20 AM PST
Extended Forecast for

San Jose International Airport CA

Flood Watch December 25, 10:43am until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 25, 10:43am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Christmas Day

    High: 58 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Rain before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain likely after 10pm. Some of the storms could be severe. Low around 49. Breezy, with an east southeast wind 15 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Severe
    Thunderstorms
    and Breezy
    then Rain
    Likely

  • Friday

    Friday: Rain, mainly before 4pm. High near 56. South southeast wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 44. South wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Chance Rain
    then Slight
    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain before 10am. Partly sunny, with a high near 54. East northeast wind 5 to 8 mph becoming north northwest in the morning.

    High: 54 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Saturday Night

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

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 4am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Clear then
    Patchy Frost

Detailed Forecast

Christmas Day
Showers and possibly a thunderstorm before 4pm, then rain after 4pm. Some of the storms could be severe. High near 58. Breezy, with a south southeast wind 18 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain likely after 10pm. Some of the storms could be severe. Low around 49. Breezy, with an east southeast wind 15 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain, mainly before 4pm. High near 56. South southeast wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 44. South wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of rain before 10am. Partly sunny, with a high near 54. East northeast wind 5 to 8 mph becoming north northwest in the morning.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Sunny, with a high near 55.
Sunday Night
Patchy frost after 4am. Otherwise, mostly clear, with a low around 36.
Monday
Patchy frost before 7am. Otherwise, sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Jose International Airport CA
 37.35°N 121.93°W (Elev. 66 ft)
Last Update:
8:59 am PST Dec 25, 2025
Forecast Valid:
10am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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