There are more gradations, that is for sure. It is spread(freezing to boiling of water) over 180 degrees, not 100. Being around it all my life I have come to like the idea of another "threshold" of cold. That being 0 degrees(-18 C). Anything in negative numbers is where it is officially "cold as %&^%#".
Never thought about the 180 degrees before. Kind of has a basis in..............something