“The CDC tracks birth data nationwide, and July through October are the busiest birth months, with August or September typically having the highest number of births.
Average baby weight at birth
The average birth weight for babies is around 7.5 lb (3.5 kg),
although between 5.5 lb (2.5 kg) and 10 lb (4.5 kg) is considered normal. In general: Boys are usually a little heavier than girls. First babies are usually lighter than later siblings.
Average baby length at birth
The average length of full-term babies at birth is 20 in. (50 cm),
although the normal range is 18 in. (45.7 cm) to 22 in.