There is a lot of adjustment available in the door glass, in all 4 directions as well as inward and outwards. It looks easy to do (I haven't done it myself, but have witnessed a ranger taking my door apart), there are adjustment screws.
Unfortunately this range of adjustment coupled with the fact that the design of the car allows for imprecision (e.g. look at the gaps between the B-pillar glass and the front and rear window glass) can result in poor seals, etc.
Not what you want to hear - but there are ways of eliminating the noise, but it does require trial and error. The fact not everyone gets wind noise at 55 (or whatever) proves that. Unfortunately having to adjust the glass and then find somewhere to drive at 55mph does make fixing the problem that much harder.