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At age 13, most teenagers are well into puberty and may be in the middle of or about to embark on growth spurts. Their height and weight may go through many changes in their teen years.
Average Height and Weight for 13-Year-Old Girls
According to the Centers for Disease Control, the average height for a 13-year-old girl is 5'1 3/4" 1. Girls' normal height can range from 4'11 1/4" at the 10th percentile to 5' 5 3/4" at the 90th percentile. The average weight for girls at that age is 102 pounds, with a range from 82 pounds at the 10th percentile to 137 pounds at the 90th percentile.
Average Height and Weight for Boys
According to the Centers for Disease Control, the average height for a 13-year-old boy is 5' 1 3/4" 1. Boys' normal height can range from 4'11" at the 10th percentile to 5' 5 3/4" 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.
Boys reach their peak height velocity, or the height of their growth spurt, at 13.5 years, while girls reach it at 11.5. Growth spurts can last two to three years, with the average girl growing 3.5 inches per year and the average boy growing 4.5 inches during that time.
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