Mike, I store my potatoes in my lower garage. My property is on a hillside so when I built my home I used prestressed concrete for the floor of my main garage. Underneath my main garage I have a second garage that is mostly underground. As a result of the garage being underground, the inside temperature rarely gets below freezing. The outside temperature has to be at or below zero for several days before garage temperature goes below freezing. It's an ideal place to store the potatoes. We just finished the last of the potatoes last week.
BTW, that's not me in the picture. It's my oldest son. I'm a lot older and fatter than him! /forums/images/graemlins/blush.gif
John