Bay Area Temps Could Hit 120 As Heat Wave Bakes Region

SAN FRANCISCO BAY AREA — The Bay Area recorded its all-time hottest official temperature reading Monday when the mercury hit 116 degrees in Livermore, but that record may not last long.

One of the most pronounced heat waves in Bay Area history has already toppled records in at least 11 cities including Livermore, and more records are expected to fall Tuesday, according to the National Weather Service.

The NWS records official temperatures at 14 locations. The city of Antioch recorded an unofficial reading of 117 degrees on Monday, the NWS said.

Temperatures in the Tri-Valley communities of Livermore, Danville and the cities of Walnut Creek, Concord, Antioch and Discovery Bay, among others, are forecast to top out between 115- and 120-degrees Tuesday, NWS Meteorologist Brooke Bingaman told Patch.

Livermore’s previous all-time high was 115 recorded in 1950 and the previous record for Sept. 5 was 108 recorded, also recorded in 1950.

The highs in Gilroy and Santa Rosa reached 112, which set records for the date and the month. Gilroy's high tied its record for September set in 2017 and 2020.

Eight other cities experienced record heat for the date, ranging from 109 in Napa to 97 in San Francisco.

— Bay City News contributed to this report