The average weight for girls varies widely depending on their age. Generally, girls between the ages of 10 and 11 weigh around 74 pounds, while girls between the ages of 12 and 13 weigh around 91 pounds. Girls between the ages of 14 and 15 weigh an average of 109 pounds, while girls between the ages of 16 and 17 weigh around 128 pounds. By the time they reach 18 and 19, girls weigh an average of 140 pounds. Age is the biggest factor when it comes to determining average weight for girls, as the average weight increases as they grow older.
However, height and body composition also play a role in determining the average weight. Generally, taller girls will weigh more than their shorter counterparts of the same age. Additionally, girls with more muscle may weigh more than those with less muscle. Regardless of height and muscle mass, it is important that girls maintain a healthy weight for their age. Eating a balanced diet and exercising regularly will help girls reach and maintain a healthy weight.