San Bruno is a city of approximately 43,200 people in California, United States. Located in the Pacific Time Zone at 37.6°N latitude.
In 2025, San Bruno recorded an average annual temperature of 56°F — about 3.1°F below the 30-year normal of 59°F. The hottest day reached 86°F in September; the coldest was 39°F in January. Total precipitation was 20 inches (near normal). The wettest month was February.
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