9 thoughts on âProtein Pile-up: Common Cause of Brain Diseaseâ. 1  Interesting article by Dr. Collins. 2  This is an exciting discovery and Iâll be looking forward and following new developments. 3  You make this sound like it is normally happening to everyone.
Summer months are pretty hot, especially at the bottom of the canyon, where it can be well over a hundred. The best hiking weather is generally April and May, and late September through October. But then, these are the hardest times to get backcountry permits. You would send your applicAtion on May 1 for a permit date any time in September.
Fall on Grand Canyonâs South Rim. September, October and November are great months to visit Grand Canyonâs South Rim. The crowds drop off dramatically after Labor Day, and the climate starts to dry out after the summer monsoons end, usually around mid-September. As the days grow shorter, the Canyon is bathed in gorgeous autumn light.