I'm always afraid to use my laptop when it's cold. I always fear that condensation will develop inside the laptop and short circuit something. It hasn't happened yet.
According to Apple, the MacBook Pro has the following specs:
Operating temperature: 50° to 95° F (10° to 35° C)
Storage temperature: -13° to 113° F (-24° to 45° C)
Relative humidity: 0% to 90% noncondensing
I wonder what the storage temperature range is for a hibernating MacBook Pro, since I always leave it sleeping.