About Altar, Sonora's Climate & Weather History

Altar, in Sonora, Mexico, is home to roughly 7,900 people in the America/Hermosillo time zone at 30.7°N latitude.

In 2025, Altar recorded an average annual temperature of 75°F. The hottest temperatures reached 113°F in August; the coolest were 32°F in January. Total precipitation for the year was 9 inches, with the wettest month being September.