You may know this, but well water stays at pretty much the same temperature all year round, at about 18 degrees. That is an objective number—it stays the same to everyone who measures it. But when you drink the water in the summer it seems cool and when you drink the same water in the winter it seems warm. Even though it’s the same water, at the same 18 degrees according to the thermometer, the way it seems depends on whether it’s summer or winter.
