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.

Mostly Cloudy

57°F

14°C

Humidity 83%
Wind Speed S 5 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 24 Dec 08:53 AM PST
Extended Forecast for

San Jose International Airport CA

Flood Watch December 24, 09:15am until December 26, 10:00pm
Wind Advisory December 24, 08:00pm until December 25, 10:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 24, 09:15am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Today

    High: 61 °F

    Chance
    Showers then
    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 1am, then showers between 1am and 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could be severe. Steady temperature around 56. Breezy, with a south southeast wind 11 to 16 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 44 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 56 °F

    Severe
    Thunderstorms
    and Breezy

  • Christmas Day

    Christmas Day: Showers likely and possibly a thunderstorm, then showers after 7am. Some of the storms could be severe. High near 57. Breezy, with a south wind 9 to 14 mph increasing to 17 to 22 mph. Winds could gust as high as 44 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Severe
    Thunderstorms
    then Showers
    and Breezy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 49. Breezy, with a south wind 16 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Severe
    Thunderstorms
    and Breezy

  • Friday

    Friday: Showers, with thunderstorms also possible after 4pm. High near 56. South wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 43. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers before 10am. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 55.

    High: 55 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Areas of fog after 3am. Otherwise, mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear
    then Areas
    Fog

Detailed Forecast

Today
Showers likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. High near 61. South southeast wind 7 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 1am, then showers between 1am and 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could be severe. Steady temperature around 56. Breezy, with a south southeast wind 11 to 16 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 44 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
Showers likely and possibly a thunderstorm, then showers after 7am. Some of the storms could be severe. High near 57. Breezy, with a south wind 9 to 14 mph increasing to 17 to 22 mph. Winds could gust as high as 44 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 49. Breezy, with a south wind 16 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers, with thunderstorms also possible after 4pm. High near 56. South wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 43. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 20 percent chance of showers before 10am. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 55.
Saturday Night
Areas of fog after 3am. Otherwise, mostly clear, with a low around 38.
Sunday
Patchy fog before 7am. Otherwise, sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Mostly 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:
8:40 am PST Dec 24, 2025
Forecast Valid:
9am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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