I get scared every time I read about people storing wine in their garage. Even in a cooler. The high temp for SF is 100 degrees. The garage temp may end up around 90 degrees. The cooler will be at 75 degrees, maybe. But what about those heat swings from when you bring into the garage a nice 120 degree solid metal heated vehicle. Go into your garage on one of those 100 degree days after you drove your car out in the blazing sun for an hour - after the car has sat inside the closed garage for 30 minutes.