I sometimes hear stories where people compare their feelings in winter in different places in the world.
It goes like
in city X the temperature was the same as in city Y, but the humidity made me feel much colder...
oh well, -20°C would be cold, but the humidity was low, so it felt OK
so it implies that humidity somehow makes it feel colder. I am talking about temperatures below freezing (-30...0°C).
Does this have any physical explanation, or is it some sort of psychological phenomenon?