About Santiago, Nuevo Leon's Climate & Weather History

Santiago is a city of approximately 36,800 people in Nuevo Leon, Mexico. Located in the America/Monterrey time zone at 25.4°N latitude.

In 2025, Santiago recorded an average annual temperature of 72°F. The hottest temperatures reached 103°F in May; the coolest were 32°F in January. Total precipitation for the year was 22 inches, with the wettest month being September.