Average weight of 13 month old baby girl?

According to the Centers for Disease Control and Prevention (CDC), the average weight for a 13-month-old baby girl is between 18.5 and 22.1 pounds. However, it's important to note that every baby is different and this is just an average. Some babies may weigh more or less than this and still be perfectly healthy. If you have concerns about your baby's weight, talk to your doctor.