How Can Wind Chimes Be Mounted On The Second Story?
Open window of your room.
Remove screen.
Lean out (carefully) and screw eyebolt to bottom of window frame.  Something like this.




Bottom of window frame because A: easier and B: chime will not hit window in strong wind.


Attach chime to eyebolt with carabiner, or chain, or something else appropriate for a site exposed to weather.  


If the chime annoys you or your new roommate or you want to swap it out for better chime, or you need to clean it out, it will be easy to get to without ladder or going on roof.