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Average Weight For A 13 Year Old. Normal weight for 13 year olds. The average weight of a 13 year old boy is between 80 to 135 pounds. However her BMI would be expressed as at the 60th percentile for 13-year-old girls. How Much Should a 13 Year Old Weigh.
Boys start puberty around age 11 to 12 and end around 16 to 17 years of age Wikipedia. While the average body weight for boys at that age was 102 pounds with a range from 80 pounds at the 10th percentile to 135 pounds at the 90th percentile. The average weight for boys at that age is 102 pounds with a range from 80 pounds at the 10th percentile to 135 pounds at the 90th percentile. But on average it is about 35 to 45-kilograms but again it varies from country to country. According to the CDC most 13-year-old girls weigh between 76 and 148 pounds lb. The typical weight for 13 year old girls ranges from 82 to 137 pounds the average weight being around 102 pounds.
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On average girls commence puberty around ages 10 to 11 and end puberty around 15 to 17 years old. The 50th percentile for weight in this group is around. During this period it is quite possible to gain and lose weight rapidly as well as add inches to their heights seemingly overnight. On average girls commence puberty around ages 10 to 11 and end puberty around 15 to 17 years old. Normal weight for 13 year olds. So to address the question what is the average weight for a 13 year old American girl here are the details.