I realize to some this is going to sound stupid but I have never seen a car battery show anything less than around 9volts unless it's frozen, busted, out of water, or something major like that. This one is about 3 months old and been sitting in my vette. How in the world does a battery get drained that bad? It's not even seen cold for it to of froze. Could a car even have a bad enough short in it to drain a battery that far down if it sits for a month? After I got it home it sit for a week or so and started right up so it just seems odd for the battery to be that dead now. Could something of chewed the wiring to make that bad of a short? I've had cars with dead shorts in them before but nothing ever like this.

What's the chances of just the battery going bad outa the blue?

Yes I know this is a mopar site but I normally avoid chevy and ford forums as I find the people here tend to be alot more helpful and knowledgeable.

A slow steady drain like a light bulb or an equivalent short in the battery itself would bring it down to nothing over three months.

It may come back with a loooong slow charge. It may take a couple of hours for it will even show its charging.

Don't know what year your Corvette is, but C4s and up are pretty notorious for draining batteries.
I have an '86 that I bought new. It will completely drain down a new battery in 4-5 weeks.
Only way to deal with long storage is to disconnect the battery or use a Battery Tender.
I guess the anti-theft system and computer stuff in them has a good bit of draw just sitting.