My gara . . . er shop is also uninsulated for the most part. There are also various openings at the top of the garage door and around the smaller door. I am in a desert basin so humidity is mostly low and temperature swings are high 30's in the winter nights to just over 105 in the summer days and the swings are pretty gradual.
I would consider your source for material. Properly prepared and stored lumber will move but, not drastically. Belay that, I am speaking from my own experience in my environment. I am handicapped when it comes to locations that have actual weather so factor that in to my statement .