Rattle or crackle sound coming from passenger side window at higher speeds.

[wedouglas]

Tonight I heard a rattle/crackling sound on the passenger side at higher speeds. It only started making noise at about 85+ mph. It's annoying and it never made the sound before. I'm guessing it's wind related.

I'm not sure what the noise is coming from, as I leaned over and put a little pressure on the window to try and see if it stopped, but it didn't seem to make a noticable effect. It was a little chilly than normal tonight, about 55, so I don't know if it was weather related. Perhaps some expanding and contracting of a seal material.

Anyone notice anything like this? I'm thinking it's related to the window, as the windows aren't framed. Any ideas?