Question: how much should a 4 month old baby boy weight?
Answer: 4-Month-Old Baby Weight & Length How much should a 4-month-old weigh and measure? The average weight for a 4-month-old baby is 14.2 pounds for girls and 15.4 pounds for boys; the average length (aka height) is 24.4 inches for girls and 25.2 inches for boys.