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

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

Lat: 37.61961°NLon: 122.36558°WElev: 10.0ft.

haze

61°F

16°C

Humidity 72%
Wind Speed NW 8 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 52°F (11°C)
Visibility 6.00 mi
Last update 15 Nov 03:35 PM PST
Extended Forecast for

San Mateo CA

  • This Afternoon

    This Afternoon: A 30 percent chance of rain. Mostly cloudy, with a high near 68. West wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly after 7pm. Low around 55. Southwest wind 7 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Rain

  • Sunday

    Sunday: Rain. High near 65. South southwest wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 65 °F

    Rain

  • Sunday Night

    Sunday Night: Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain after 10pm. Low around 53. South southwest wind 11 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 53 °F

    Showers

  • Monday

    Monday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 64. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 64 °F

    Rain Likely

  • Monday Night

    Monday Night: A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 49. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of rain after 4pm. Mostly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

This Afternoon
A 30 percent chance of rain. Mostly cloudy, with a high near 68. West wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly after 7pm. Low around 55. Southwest wind 7 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 65. South southwest wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain after 10pm. Low around 53. South southwest wind 11 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 64. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 49. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
A chance of rain after 4pm. Mostly sunny, with a high near 65.
Wednesday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 51.
Thursday
Rain likely. Mostly cloudy, with a high near 63.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 49.
Friday
A chance of rain. Mostly sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.56°N 122.33°W (Elev. 108 ft)
Last Update:
12:26 pm PST Nov 15, 2025
Forecast Valid:
3pm PST Nov 15, 2025-6pm PST Nov 22, 2025
 
Forecast Discussion
 
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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