Hey Devon
I live in Colorado (as you know

) Two days ago, it was 80 degrees at 10% humidity

AWESOME!!!!!
Yesterday it was 10 degrees at 85% humidity ..... ~burr~
My heater in my house sucks (lot's of variance in temp)
You'll have to tune your guitar (obviously) regardless, and I do a slight truss adjustment (say every two weeks or so) to keep them at optimum performance level
As far as prolonged damage, I wouldn't worry about it at all unless you leave her sitting outside
