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

Hollister, CA (KCVH)

Lat: 36.8933°NLon: 121.4103°WElev: 229.0ft.

Partly Cloudy

63°F

17°C

Humidity 77%
Wind Speed SSE 39 MPH
Barometer 29.52 in (999.66 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 24 Dec 01:35 AM PST
Extended Forecast for

4 Miles SSE Gilroy CA

Flood Watch December 24, 09:58am 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, 09:58am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Today

    High: 61 °F

    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then showers between 2am and 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could be severe. Low around 50. East southeast wind 10 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers
    Likely then
    Severe
    Thunderstorms

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm. Some of the storms could be severe. Patchy fog between 9am and 10am. High near 58. Breezy, with a south wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 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 and
    Breezy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Patchy fog after 4am. Low around 46. Breezy, with a south southwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Friday

    Friday: Showers, with thunderstorms also possible after 4pm. Patchy fog before 10am. High near 56. South wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 7pm, then showers likely between 7pm and 10pm, then a chance of showers and thunderstorms after 10pm. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 41. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 10am. Areas of fog before noon. Otherwise, mostly sunny, with a high near 57.

    High: 57 °F

    Chance
    Showers and
    Areas Fog

  • Saturday Night

    Saturday Night: Patchy fog after 9pm. Patchy frost after 4am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Patchy Fog
    then Patchy
    Frost and
    Areas Fog

Detailed Forecast

Today
Showers likely, then showers and possibly a thunderstorm after 4pm. Patchy fog between 10am and noon. High near 61. Light and variable wind becoming south southeast 6 to 11 mph in the afternoon. Winds could gust as high as 18 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 thunderstorms likely before 2am, then showers between 2am and 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could be severe. Low around 50. East southeast wind 10 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Christmas Day
Showers and possibly a thunderstorm. Some of the storms could be severe. Patchy fog between 9am and 10am. High near 58. Breezy, with a south wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 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. Patchy fog after 4am. Low around 46. Breezy, with a south southwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers, with thunderstorms also possible after 4pm. Patchy fog before 10am. High near 56. South wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 7pm, then showers likely between 7pm and 10pm, then a chance of showers and thunderstorms after 10pm. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 41. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers, mainly before 10am. Areas of fog before noon. Otherwise, mostly sunny, with a high near 57.
Saturday Night
Patchy fog after 9pm. Patchy frost after 4am. Otherwise, mostly clear, with a low around 36.
Sunday
Areas of fog before 11am. Patchy frost before 8am. Otherwise, sunny, with a high near 58.
Sunday Night
Patchy fog after 1am. Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.
Monday
Areas of fog. Patchy frost. Otherwise, sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Gilroy CA
 36.96°N 121.54°W (Elev. 154 ft)
Last Update:
8:40 am PST Dec 24, 2025
Forecast Valid:
9am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation