12 degree weather shattered iPad?

Air pressure sufficiently high to crack glass would probably be more than you could survive, at least under most circumstances. So I doubt the damage was caused by air pressure. Most likely it was thermal stress such as from being taken from a warm environment to a very cold one.

As to a repair, it's doubtful that Apple would handle the problem at no charge since they're not likely to consider this a factory defect, though you can take the iPad to an Apple Store and discuss the issue with them. If they will not, Apple does not repair iPads, but will replace the entire iPad for a flat fee. If you have AppleCare+ on the iPad, the cost will be relatively minimal; $49 in the US. Otherwise, see the Service Pricing section here:

http://www.apple.com/support/ipad/service/faq/

There are independent iPad repair services that may be able to replace the screen for less. Do a web search for "ipad repair". You can also look for parts and instructions and do the repair yourself. Note, though, that if you elect to have the iPad serviced by an unauthorized shop or perform your own repair, you will get no further support from Apple.

Regards.

Operating temperature iPad is designed to work in ambient temperatures between 32° and 95°

F (0° and 35° C) and stored in temperatures between -4° and 113° F (-20° and 45° C). iPad can be

damaged and battery life shortened if stored or operated outside of these temperature ranges.

Avoid exposing iPad to dramatic changes in temperature or humidity. When you’re using iPad or

charging the battery, it is normal for iPad to get warm

From user guide.

http://manuals.info.apple.com/MANUALS/1000/MA1595/en_US/ipad_user_guide.pdf

Make an appointment at an Apple Store to have your device examined by a technician. Or contact Apple Support. That's the best way to learn about your options and ensure that after the iPad is replaced that your warranty is still intact.

I'll give you the same basic tips we give to our laptop users, modified for an iPad:

- Store your iPad carefully. Never leave an iPad in the trunk of your car in cold weather or otherwise in an unheated area, even if the system is in an insulated case. If your iPad freezes, it could damage the screen or other components.

- When moving from a warm area to or through a very cold one, carry your iPad in a padded/insulated case. Don't open the case when you're in a very cold environment, at least not until you've been out for a while and the iPad has cooled down. Sudden themal shock, going quickly from warm to cold or vice-versa could cause the screen to crack.

- After bringing an iPad in from the cold, let it warm up to room temperature before using it. The display is especially vulnerable; do not wake up an iPad if you suspect the display is frozen. Let it warm up first.

Note as well that physical pressure on the iPad's screen can crack it even if it wasn't dropped, per se, so depending on how and where you carry the iPad, it's possible that it was damaged due to such pressure (such as from a book or other hard object if the iPad was carried in a backpack) rather than from the cold.

Regards.

I think if this were an actual problem with cold temps, we would have heard thousands more complaints over the years.