It can be glorious in the fall - a lot of the rock routes will be in great shape. The smaller glaciers will be dry, so crevasses may or may not be a problem, but at least you'll see them.. Higher up the glaciers can be really treacherous.
BUT it can also decide to snow down far - all depends on Mother Nature's whims.
I would tend to look at rock routes in the Grimsel area, for example, or the Engelhörner. Diamantstock or Hühnertälihorn (Hiendertelltihorn) cross some glacier, but they are not considered problematic. Diechterhorn has glacier, but it is dry to the saddle.
These climbs depending on your viewpoint are in the Berner Alps or in Uri Alps.