About San Gabriel, CA's Climate & Weather History

San Gabriel is a city of approximately 40,400 people in California, United States. Located in the Pacific Time Zone at 34.1°N latitude.

In 2025, San Gabriel recorded an average annual temperature of 65°F — about 0.9°F below the 30-year normal of 66°F. The hottest day reached 103°F in May; the coldest was 40°F in January. Total precipitation was 26 inches (wetter than usual). The wettest month was November.