I have recently gotten into collecting wine. So far, I haven't wanted to invest in a wine cooler. I do have a small off-site storage locker where I almost immediately whisk my more expensive wines and where they are properly stored at 55 degrees.
However, I like to have some wines at home and have been keeping them in a partially closed cabinet in the coolest room. Room doesn't get a lot of sunlight and I'm guessing that even in summer, temps are unlikely to go much past the '70's. Still, as summer is coming, I'm afraid that my wines are going to go to ruin and that perhaps I should whisk all but one or two bottles off to my off-site storage. We're not talking about pricey Bordeauxs, but we are also not talking about two-buck Chuck either -- just carefully chosen mid-priced wines that I would hate to go to ruin. It could be a year or so until they are drunk.
So what exactly happens to wine stored at temps in the '70's? And what happens if there is a heat wave and the indoor temp goes up to the '80's for a few days?