title_body: Can mead spoil? If so, in what ways?
upvoted_answer: Generally speaking, your mead is fine if you haven't opened it.  Normally, commercial meaderies bottle in dark bottles (or something other than clear) which keep out the UV light.  I doubt that the temperature was much of an issue.  You should be able to chill your mead and enjoy it.  FWIW, I'd drink it out of a wine glass made for white wine rather than the skull of an enemy.  You'll be able to pick up on the subtleties of the mead this way, while the other might be more enjoyable.