What is the average weight of a 13 year old boy?

The Centers for Disease Control growth charts indicate that 50 percent of all 13 year old boys range between 88 lbs. and 115 lbs. About 100 lbs. is at the 50th percentile for boys this age.

At 13 boys are on the cusp of major growth spurts, and may have already had a growth spurt that help them mature into fully grown men. As such, their weight and height can vary wildly. Most boys can range in weight from 75 lbs. up to 142 lbs. at 13 years of age, as stated by CDC growth charts. About 50 percent of boys are at or below 100 lbs. at this age.