I'm surprised the balloon didn't have the air squeezed out of it in that cold. You have it worse than I dear. It's been below here, but only a few degrees and only at night. It was near 20 yesterday, and I wore a t-shirt to work. I'm sure the inside people love it when they see me through the window walking out to grab a truck in my sleeveless T with the smoke of my breath curling around my head.