The freezing point of water is a pretty big deal, folks. It's the temperature at which water turns into ice, and that magic number is 32 degrees Fahrenheit (or 0 degrees Celsius, for all you metric system fans out there). Yeah, I know, it's not exactly a secret or anything, but just go with it.
Now, you might be wondering, what's so special about 32 degrees Fahrenheit? Well, my curious friend, it's the temperature at which the molecules in water start to slow down and come together to form a crystal lattice structure, aka ice. It's like a big party for water molecules, and everyone's invited - except, of course, for the ones that are still too cool (get it?) to join in.