About Tonto Basin, AZ's Climate & Weather History

Tonto Basin is a city of approximately 1,400 people in Arizona, United States. Located in the Mountain Time Zone at 33.8°N latitude.

In 2025, Tonto Basin recorded an average annual temperature of 70°F — about 12.5°F above the 30-year normal of 57°F. The hottest day reached 113°F in August; the coldest was 29°F in January. Total precipitation was 19 inches (near normal). Snowfall totaled 2 inches, below the 19-inch average. The wettest month was November.