Quote Originally Posted by Srt_529 View Post
Would humidity or temp cause any type of cryish sound.
Low temps/humidity can increase conditions for, but not cause, respiratory infections. It's kind of like just being out in the cold will not give you a cold - you have to catch a cold from someone. Some things to be on the lookout for would be nasal discharge, open mouth breathing (holding their head up in the air), and wheezing.

Like I said earlier though, it's probably not likely to be a RI, but it certainly doesn't hurt to be diligent in your observations (like you already seem to be).