National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. 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

61°F

16°C

Humidity 83%
Wind Speed NA NA MPH
Barometer 29.52 in (999.66 mb)
Dewpoint 56°F (13°C)
Visibility 5.00 mi
Last update 24 Dec 01:53 AM PST
Extended Forecast for

3 Miles NW San Jose CA

Flood Watch December 24, 02:09am until December 26, 10:00pm
Wind Advisory until December 24, 04:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 24, 02:09am until December 26, 10:00pm
    Wind Advisory until December 24, 04:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 52 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. Patchy fog before 7am. High near 61. South southeast wind 5 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Showers
    Likely and
    Patchy Fog
    then Severe
    Thunderstorms

  • Wednesday Night

    Wednesday Night: 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. Low around 50. Southeast wind 14 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 50 °F

    Severe
    Thunderstorms

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm. Some of the storms could be severe. Patchy fog between 7am and 8am. High near 58. South wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 58 °F

    Severe
    Thunderstorms
    and Patchy
    Fog then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 47. South wind 13 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Severe
    Thunderstorms

  • Friday

    Friday: Showers. High near 55. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °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. Otherwise, mostly cloudy, with a low around 42. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: A slight chance of showers before 10am. Areas of fog before noon. Otherwise, mostly sunny, with a high near 55.

    High: 55 °F

    Slight Chance
    Showers and
    Areas Fog
    then Mostly
    Sunny

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 52. South southeast wind around 21 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. Patchy fog before 7am. High near 61. South southeast wind 5 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
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. Low around 50. Southeast wind 14 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
Showers and possibly a thunderstorm. Some of the storms could be severe. Patchy fog between 7am and 8am. High near 58. South wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 40 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 47. South wind 13 to 20 mph, with gusts as high as 36 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. High near 55. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Saturday
A slight chance of showers before 10am. Areas of fog before noon. Otherwise, mostly sunny, with a high near 55.
Saturday Night
Patchy fog. Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.
Sunday
Areas of fog before 10am. Patchy frost before 7am. Otherwise, sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 36.
Monday
Sunny, with a high near 59.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Mostly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW San Jose CA
 37.33°N 121.9°W (Elev. 82 ft)
Last Update:
1:25 am PST Dec 24, 2025
Forecast Valid:
2am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation