San Ildefonso is a city of approximately 4,400 people in Hidalgo, Mexico. Located in the Central Time Zone at 20°N latitude.
In 2025, San Ildefonso recorded an average annual temperature of 61°F. The hottest temperatures reached 90°F in May; the coolest were 33°F in January. Total precipitation for the year was 45 inches, with the wettest month being June.
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