144 pounds: CDC growth charts published in 2000 based on the U.S. Population data gives the height of a 13 yr old boy of 68" at 95th percentile. So the 95th percentile in weight of a 13 yr old boy can be easily read off the graph as 144 pounds. And that's not gross!
Answered 8/28/2015
2.4k views
145: He is quite tall for his age at >95th % so he could weigh about 140 to 150 lbs
Answered 8/28/2015
2.4k views
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