What is a rounded fluffy white or gray cloud?

A rounded fluffy white or gray cloud is typically classified as a cumulus cloud. These clouds are characterized by their puffy, cotton-like appearance and can vary in size and height. While they often indicate fair weather, larger cumulus clouds can develop into cumulonimbus clouds, which are associated with thunderstorms and severe weather. Their white color usually indicates that they are reflecting sunlight, while gray hues may suggest greater thickness and potential precipitation.