According to Disabled World, the average healthy weight for a five foot two girl between the ages of 12 and 13 is approximately 90 to 105 pounds. However, it is common for children to experience growth spurts, leading to rapid weight gain or loss, especially in adolescent girls.
According to MDHealth.com, the average healthy weight for girls between 5 feet 1.5 inches and 5 feet 4.5 inches ranges between 74.5 pounds to 159.5 pounds, depending on body frame size. Many health professionals use height and weight charts as tools to track children's growth and development. Generally, healthy adolescent girls weigh less than healthy adolescent boys.