California · NWS MTR office

San Bruno, CA weather

It is 52°F and mostly cloudy at San Francisco, San Francisco International Airport as of Oct 28, 5:00 AM PDT. Overnight: Mostly Clear, low near 51°F. Forecast from the National Weather Service, issued Oct 28, 2:16 AM PDT.

Updated Oct 28, 5:24 AM PDT (snapshot)

Current conditions

Temperature

52°F

Mostly Cloudy

Wind

—

Humidity 87% · dew point 48°F

Pressure · visibility

30.01 inHg

Visibility 10 mi

Observed at San Francisco, San Francisco International Airport (KSFO), Oct 28, 5:00 AM PDT. Station readings can lag or be missing.

Alerts for this area

Coastal Flood Advisory Minor Expected

Coastal Flood Advisory issued October 28 at 12:20AM PDT until October 31 at 6:00PM PDT by NWS San Francisco CA

Area
San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
In effect
Oct 28, 12:20 AM PDT
Until
Oct 31, 6:00 PM PDT
Issued by
NWS San Francisco CA
Full text

* WHAT...Up to 1.9 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bay Shoreline locations of San Pablo Bay, San Francisco Bay, and Monterey Bay. * WHEN...Until 6 PM PDT Saturday. * IMPACTS...High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas. More substantial impacts are expected along bayshore Marin County where increased flooding is anticipated across low lying areas. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.9 ft above normal (7.7 ft MLLW) at 12:56 PM Wednesday 10/28, 1.9 ft above normal (7.7 ft MLLW) at 01:43 PM Thursday 10/29, 1.6 ft above normal (7.4 ft MLLW) at 02:39 PM Friday 10/30, and 1.1 feet above normal (6.9 ft MLLW) at 03:44 PM on Saturday 10/31. These predictions include up to 1.2 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

What to do: If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Around the NWS MTR forecast area

2 active alerts cover zones served by the MTR office near San Bruno:

  • Coastal Flood Advisory (2)

From the alert snapshot of Oct 28, 2026, 8:14 AM EDT. California has 8 active alerts: see them all.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for San Bruno (local time)
TimeTempForecastPrecip. chanceWind
Wed 5 AM51°FMostly Clear0%NE 3 mph
Wed 6 AM51°FMostly Sunny0%ENE 3 mph
Wed 7 AM51°FMostly Sunny0%ENE 3 mph
Wed 8 AM51°FSunny0%ENE 3 mph
Wed 9 AM54°FSunny0%E 3 mph
Wed 10 AM56°FSunny0%ENE 3 mph
Wed 11 AM61°FMostly Sunny0%NE 5 mph
Wed 12 PM63°FMostly Sunny0%NNE 5 mph
Wed 1 PM64°FMostly Sunny0%N 5 mph
Wed 2 PM66°FSunny0%WNW 7 mph
Wed 3 PM66°FSunny0%WNW 8 mph
Wed 4 PM65°FSunny0%WNW 10 mph
Wed 5 PM63°FSunny0%W 12 mph
Wed 6 PM60°FMostly Clear0%WNW 12 mph
Wed 7 PM58°FPartly Cloudy0%WNW 9 mph
Wed 8 PM57°FPartly Cloudy0%W 8 mph
Wed 9 PM57°FPartly Cloudy0%W 6 mph
Wed 10 PM56°FPartly Cloudy0%W 5 mph
Wed 11 PM55°FMostly Cloudy0%W 3 mph
Thu 12 AM55°FMostly Cloudy0%W 2 mph
Thu 1 AM54°FMostly Cloudy0%WSW 2 mph
Thu 2 AM54°FMostly Cloudy0%WSW 2 mph
Thu 3 AM53°FMostly Cloudy0%SW 2 mph
Thu 4 AM53°FMostly Cloudy0%SSW 2 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in San Bruno can differ.

7-day forecast

Overnight

Low 51°F

Mostly clear, with a low around 51. Northeast wind around 3 mph.

Wednesday

High 66°F·Low 52°F

Sunny. High near 66, with temperatures falling to around 63 in the afternoon. North northeast wind 3 to 12 mph.

Wednesday Night: Mostly cloudy, with a low around 52. West southwest wind 2 to 12 mph.

Thursday

High 66°F·Low 53°F

Partly sunny, with a high near 66. East southeast wind 2 to 8 mph.

Thursday Night: Mostly cloudy, with a low around 53. West southwest wind 5 to 8 mph.

Friday

High 64°F·Low 51°F

Sunny, with a high near 64.

Friday Night: Partly cloudy, with a low around 51.

Saturday

High 61°F·Low 51°F

Partly sunny, with a high near 61.

Saturday Night: A slight chance of rain between 11pm and 4am. Partly cloudy, with a low around 51.

Sunday

High 63°F·Low 54°F

Sunny, with a high near 63.

Sunday Night: Mostly clear, with a low around 54.

Monday

High 67°F·Low 55°F

Mostly sunny, with a high near 67.

Monday Night: Mostly cloudy, with a low around 55.

Tuesday

High 67°F

A chance of rain after 10am. Partly sunny, with a high near 67.

Nearby cities

Larger cities in the area

Other cities in San Mateo County

See every city we cover in California, or check all active alerts.

About this forecast

Forecast office
San Bruno is served by the National Weather Service MTR forecast office, forecast zone CAZ508, county zone CAC081.
Location used
The Census Bureau's internal point for San Bruno (37.6256, -122.4314), in San Mateo County. Population: 42,035 (2024 estimate), number 202 of the 296 California cities on this site.
Radar
Nearest NWS radar: KMUX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/37.6256,-122.4314 (forecast issued Oct 28, 2:16 AM PDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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