Station Name: SAN FRANCISCO BAY 2.8 MI N OF SAN MATEO BRIDGE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
San Francisco Bay
San Mateo, CA 94401
San Mateo County

GPS Coordinates: 37.63078889, -122.2432

Nearby Water Temperatures

Cold Weather Advisory issued February 20 at 12:00PM PST until February 21 at 9:00AM PST by NWS San Francisco CA

Effective: Fri February 20, 2026, 12:00 PM
Expires: Sat February 21, 2026, 4:00 AM

* WHAT...Cold conditions with temperatures as low as 33 expected. Slightly warmer conditions will be found across portions of the northern Salinas Valley and Carmel Valley where low temperatures range from 36 to 40 degrees. * WHERE...The Santa Clara Valley, North Bay Interior Valleys and Mountains, East Bay Interior Valleys, and Northern Salinas Valley and Hollister Valley. * WHEN...From 1 AM to 9 AM PST Saturday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken.

Make frequent checks on older family, friends, and neighbors and ensure that they have adequate shelter and/or warmth. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.

Cold Weather Advisory issued February 20 at 12:00PM PST until February 21 at 9:00AM PST by NWS San Francisco CA

Effective: Fri February 20, 2026, 12:00 PM
Expires: Sat February 21, 2026, 4:00 AM

* WHAT...Cold conditions with temperatures as low as 33 expected. Colder temperatures as low as 27 degrees for elevations above 2500 feet. * WHERE...East Bay Hills. * WHEN...From 1 AM to 9 AM PST Saturday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken.

Make frequent checks on older family, friends, and neighbors and ensure that they have adequate shelter and/or warmth. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.

Extreme Cold Warning issued February 20 at 12:00PM PST until February 21 at 9:00AM PST by NWS San Francisco CA

Effective: Fri February 20, 2026, 12:00 PM
Expires: Sat February 21, 2026, 4:00 AM

* WHAT...Very cold conditions with temperatures as low as 31 expected. * WHERE...Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, Eastern Santa Clara Hills, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...From 1 AM to 9 AM PST Saturday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock.

Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.