We visited the Glacier National Park, MT area the second week of June. Every American owes it to themselves to see this national treasure in their lifetime. For us, it is second only to Grand Canyon in its ability to inspire wonder and awe.
Check out the park web site at http://www.nps.gov/glac/ - it is excellent. We visit the photo galleries and web cams often.
Like the Grand Canyon, these few pictures can't begin to do justice to the beauty and majesty of the mountains, and it's hard to describe the impact they have on all aspects of life in the area (the weather being at the top of this tourist's list). See the picture captions for more).
We took hundreds of pictures... Maybe I'll add some more to the gallery over time. I've arranged these few to frame our trip.