About Ajo, AZ's Climate & Weather History

Ajo, in Arizona, United States, is home to roughly 3,300 people in the Mountain Time Zone at 32.4°N latitude.

In 2025, Ajo recorded an average annual temperature of 74°F. The hottest temperatures reached 112°F in July; the coolest were 33°F in January. Total precipitation for the year was 6 inches, with the wettest month being September.