6 weeks is ample time for holiday sales. 6 weeks from now it will be Halloween. Mid October, I wouldn't mind seeing Thanksgiving stuff, and the week of Thanksgiving is when Christmas stuff should hit shelves.
In any store* that has Christmas merchandise out before October is even half done people should complain to the managers, letting them know that 'tis not the season' for such items. Fall has barely started, and they are skipping over two pretty big holidays.
I'm a Halloween fan myself, I have more fond memories of Halloween and Fall than I do of Christmas and Winter, so seeing Fall/Halloween items shoved aside for Christmas sales strikes a nerve. I'm sure if it were a National holiday like Christmas, Halloween would have better standings with more people buying for it, but there is little chance of that happening.
*The exception to this is craft stores, such as Joanns and Michaels. Handmade gifts and crafts require more time and it is reasonable for these stores to have their wares out early.