What is the average weight of a 13 yearold girl who is 5'3? i'm just wondering if my daughter needs to gain/loose weight...she is as skinny as a twig!

About : About 103 to 127 pounds. Heavy bone structure and muscle could bring it over 127 pounds. I would talk to her pediatrician before trying to change her weight.

Pediatricians : Pediatricians & family physicians typically plot your child's height & weight at each visit on a growth chart. Depending upon race, sex, age, family genetics, bone structure, etc, your child should follow one of the growth curves. If s/he crosses one or more lines, we worry about issues leading to lack of growth or excessive growth depending upon which lines are crossed. I've attached below the height & weight growth chart as standardized by the centers for disease control & prevention (cdc) that is most often referenced in our offices. If your child is at the 5th percentile or less, that means that s/he is bigger/heavier than only 5 out of 100 children his/her age (that's pretty small). If your child is at the 95th percentile or greater, that means that s/he is bigger/heavier than 95 out of 100 children his/her age (that's pretty big). If the percentile for height is larger than the percentile for weight, than s/he is tall & skinny. If the percentile for height is less than the percentile for weight, then s/he may be shorter and/or fatter. The world health organization also has reference growth charts for children but i couldn't find one for girls older than 10yo (i've listed the general reference below). Best to take your daughter in to see her pediatrician or family physician for accurate weight & height measurement. They can then perform additional testing as indicated. Good luck!