What is the average weight of a 9 13-year-old boy?

According to the Centers for Disease Control and Prevention (CDC), the average weight of a 9-13-year-old boy is between 30.7 and 44.9 kilograms (68.3 and 99.1 pounds). However, there is a wide range of normal weights for this age group, and your child's weight may vary based on their height, body composition, and other factors.