there is not one normal or ideal weight for babies and young toddlers. pediatricians track a child's growth using growth charts measuring weight height and head circumference. this shows how your child grows over time and what percentile they are at (comparison to other children). so if you child's height for weight is 50% percentile they are average. if they 80 percentile that means out of 100 kids there are 20 that are bigger and 80 that are smaller. what matters most isn't a child's weight/height percentile but that he/she is growing in a steady fashion. a child may be at 20 percentile on the small side but if that is where he/she has been tracking since birth it is likely a good weight for the baby. the same is true for higher percentiles. but when growth goes off the steady growth either up or down that may be a sign of concern. the world health organization growth charts are recommended for babies 0-24 months of age and can be found at <link> be sure to review growth with your pediatrician.
what is tthe normal ideal weight for a 16 month old girl? i have one and she is 19lbs and 6 oz