Average Weight of a Woman Research shows that the average weight of women in the UK is 10 stone 3.5lbs. The average weight in 1951 was 9 stone 10lbs. In America, the average weight for women is 11 stone 1.5lbs. Other interesting facts...What is Orthokeratology?Why does our body need muscles?What causes brain freeze?What are our five senses?Who helps the police with enquiries?