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

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Current conditions at

Hollister, CA (KCVH)

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

Mostly Cloudy

63°F

17°C

Humidity 88%
Wind Speed W 10 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 59°F (15°C)
Visibility 9.00 mi
Last update 18 Sep 07:55 AM PDT
Extended Forecast for

Gilroy CA

  • Today

    Today: A chance of showers and thunderstorms between 11am and 2pm, then a chance of showers after 2pm. Mostly cloudy, with a high near 81. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers

  • Tonight

    Tonight: A 40 percent chance of showers. Mostly cloudy, with a low around 61. Calm wind. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 61 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Light southwest wind. New precipitation amounts of less than a tenth of an inch possible.

    High: 83 °F

    Chance
    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. West southwest wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 87. Light and variable wind.

    High: 87 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

Detailed Forecast

Today
A chance of showers and thunderstorms between 11am and 2pm, then a chance of showers after 2pm. Mostly cloudy, with a high near 81. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers. Mostly cloudy, with a low around 61. Calm wind. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A 30 percent chance of showers. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Light southwest wind. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly clear, with a low around 59. West southwest wind around 6 mph becoming calm in the evening.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 87. Light and variable wind.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny and hot, with a high near 96.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 87.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gilroy CA
 37°N 121.56°W (Elev. 187 ft)
Last Update:
7:55 am PDT Sep 18, 2025
Forecast Valid:
8am PDT Sep 18, 2025-6pm PDT Sep 24, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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