There is no specific weight that a 15-year-old boy should weigh (or a person of any age). This is because weight is related to height and body composition rather than age.
Here are some examples form WikiAnswer users:
For more information about weight in relation to height, the causes of unwanted weight gain and how to treat it, and to see charts showing the distribution of weights and heights of children at various ages, please see the page link, further down this page, listed under Related Questions.
an average nine year old boy's weight is about 75 to 90 pounds
average height for a one year old girl is 32 inches average weight for a one year old girl is 24.75 lb average height for a one year old boy is 33.75 inches average weight for a one year old boy is 27 lb
10.5kg
What_are_some_frequently_asked_nutrition_questions
The average weight for a 10 year old boy is about 70 pounds.
198
9stone
105 or so
6 stone
My weight is about 64LBS and I am 10 in two months
you should weight something that includes numbers..
The average weight of a one year old boy is 22 pounds; the average height is 28-29 inches. The averages for a one year old girl are the same.http://www.disabled-world.com/artman/publish/height-weight-teens.shtml