Brad you are a phuuuking idiot. You don't even understand the concept of relative humidity, "humid sub-zero". What a dumbschidt.
Hey dumbass, ever been out all day in sub zero and come back to a tent soaking wet? Guess where all that humidity goes? In your tent. That's the wet I'm talking about... the real kind that too many bring into their bags through lack of care and zap the loft.
And BTW, even though air is below freezing it can hold some humidity.
