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San Gregorio, California Weather Forecast
San Gregorio, California Weather
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Weather Forecast for San Gregorio, California : San Mateo County
Issued: 12:26 am PST Dec 18, 2025 Latitude: 37.3271651 Longitude: -122.3866404 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Morning Fog on Overnight Mostly Sunny on Thursday 80% chance of rain on Friday 80% chance of rain on Saturday Thunderstorms on Sunday 70% chance of rain on Monday 70% chance of rain on Tuesday Rain on Wednesday
Low: 46°F High: 60°F High: 61°F High: 61°F High: 61°F High: 60°F High: 58°F High: 58°F
Low: 49°F Low: 51°F Low: 52°F Low: 50°F Low: 48°F Low: 49°F  
Morning Fog Mostly Sunny Rain Rain Thunderstorms Rain Rain Rain
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Current Conditions at
SAN CARLOS - (KSQL)
48°
Mostly Cloudy
as of 1:15 AM PST
Rel. Humidity: 100%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
Calm
Current Conditions at
MOUNTAIN VIEW NAS - (KNUQ)
46°
Clear
as of 1:10 AM PST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SAN JOSE INTL - (KSJC)
48°
Clear
as of 12:53 AM PST
Rel. Humidity: 93%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Morning Fog on Overnight Overnight... Patchy drizzle. Patchy dense fog before 2am. Otherwise, partly cloudy, with a low around 46. Calm wind.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 60. Light northwest wind.

40% chance of rain Thursday Night Thursday Night... A 40 percent chance of rain. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 49. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

80% chance of rain Friday Friday... Rain, mainly after 10am. Patchy fog before 10am. High near 61. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

90% chance of rain Friday Night Friday Night... Rain, mainly before 4am. Low around 51. South wind 3 to 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

80% chance of rain Saturday Saturday... Rain, mainly after 10am. Patchy fog before 10am. High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

90% chance of thunderstorms Saturday Night Saturday Night... Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 52. Chance of precipitation is 90%.

Thunderstorms on Sunday Sunday... Showers and possibly a thunderstorm. Cloudy, with a high near 61.

Rain on Sunday Night Sunday Night... Rain. Cloudy, with a low around 50.

70% chance of rain Monday Monday... Rain likely. Cloudy, with a high near 60.

70% chance of rain Monday Night Monday Night... Rain likely. Cloudy, with a low around 48.

70% chance of rain Tuesday Tuesday... Rain likely. Mostly cloudy, with a high near 58.

Rain on Tuesday Night Tuesday Night... Rain. Cloudy, with a low around 49.

Rain on Wednesday Wednesday... Rain. Mostly cloudy, with a high near 58.

Current Radar Image


Sun Almanac for San Gregorio, California
Sunrise: 07:19 AM
Sunset: 4:54 PM
Civil Sunrise:06:49 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:17 AM
Nautical Sunset: 5:56 PM
Astro Sunrise: 05:45 AM
Astro Sunset: 6:28 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.