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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mist

57°F

14°C

Humidity 87%
Wind Speed WNW 10 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 54°F (12°C)
Visibility 6.00 mi
Last update 08 Apr 07:35 PM PDT
Extended Forecast for

San Mateo CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. West wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 72. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 72 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 11pm. Mostly cloudy, with a low around 54. West southwest wind 5 to 7 mph becoming calm in the evening. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 69. Calm wind becoming south southwest 5 to 9 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely after 8pm. Mostly cloudy, with a low around 53. South southwest wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 64. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Showers

  • Saturday Night

    Saturday Night: Rain likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Rain Likely

  • Sunday

    Sunday: A chance of rain. Partly sunny, with a high near 63.

    High: 63 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A slight chance of rain. Partly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 54. West wind around 6 mph becoming calm in the evening.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 72. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
A 40 percent chance of showers after 11pm. Mostly cloudy, with a low around 54. West southwest wind 5 to 7 mph becoming calm in the evening. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 69. Calm wind becoming south southwest 5 to 9 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then showers likely after 8pm. Mostly cloudy, with a low around 53. South southwest wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 64. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Rain likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Sunday
A chance of rain. Partly sunny, with a high near 63.
Sunday Night
A slight chance of rain. Partly cloudy, with a low around 47.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.54°N 122.32°W (Elev. 194 ft)
Last Update:
4:51 pm PDT Apr 8, 2026
Forecast Valid:
7pm PDT Apr 8, 2026-6pm PDT Apr 15, 2026
 
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