What is the average height and weight of a 16-year-old boy?

In a way this is not a useful question to ask because 16 year olds are right in the middle of adolescence and are growing taller and heavier rapidly; some boys grow faster and slow; others grow earlier or later. Being "average" is kind of impossible because all teens' bodies are in flux.

The 50th percentile for the height of 16-year-old boys is about 68 inches (or 5 foot 8 inches) in the United States.

The 50th percentile for the weight of 16-year-old boys is about 135 pounds in the United States.

However, keep in mind that the United States is a nation of 300 million people. What is average among 300 million people may not look average where you live.