Final answer:
Children under 2 years of age typically weigh between 20 and 40 pounds during winter, or 9 to 18 kilograms.
Step-by-step explanation:
In infancy, toddlerhood, and early childhood, the body's physical development is rapid. On average, newborns weigh between 5 and 10 pounds, and a newborn's weight typically doubles in six months and triples in one year. By 2 years old the weight will have quadrupled, so we can expect that a 2 year old should weigh between 20 and 40 pounds.
According to the World Health Organization, the weights of children between 1 and 2 years old fall within a range of 18.3 to 34.3 pounds (8.3 to 15.6 kg).
Please note that these are general ranges and individual variations may occur. It is always best to consult a healthcare professional for accurate and specific information.