According to CDC growth charts, a 13-year-old girl or boy should weigh 100 pounds on average. According to statistics, guys are typically 100 pounds heavier than girls by the age of 13. For girls, the typical weight range is 75–147 pounds, while for boys, it is 74.5–144 pounds.
A child’s average weight indicates that around half of children of that age weigh more and half weigh less. A child of average weight would be in the 50th percentile in terms of percentiles, with half of children of that age being in higher percentiles and the other half being in lower percentiles.
These typical growth trends might not be observed in kids with specific difficulties. For instance, children with Down syndrome might not weigh 100 pounds on average at the age of 13. The best sources of knowledge about a child’s unique growth and development are paediatricians and other medical specialists.
Teenagers go through growth spurts, thus a 13-year-old who is underweight on his birthday could catch up to and surpass the norm by the end of the year due to growth spurts. Teenagers can grow several inches in height quickly and experience rapid weight gain and loss, which helps them return to the usual weight range.