How cold can Play-Doh get If you leave it in a cold garage will it be ok?

Well, darling, Play-Doh can freeze just like your ex's heart, so if you leave it in a cold garage, it might become as hard as your grandma's fruitcake. But don't you worry, once it warms up, it should be good as new, unlike that haircut you got last year. Just let it thaw out and knead it a bit, and it'll be back to its squishy self in no time.