Close, but it's not "pathetic fallacy." Quite literally, a pathetic fallacy is a misapprehension of something (environment, art, nature, etc.) based upon one's mood - an error in reasoning or perception (fallacy) due to one's emotion (pathos). A pathetic fallacy can include weather, but it is not the "reflecting" of mood or internal conflict to which you're referring.
See
http://www.victorianweb.org/technique/pathfall.html for an elaboration of this term by Ruskin, the person who coined the term in 1856 (?) - a site maintained by Professor George P. Landow of Brown University.