I just returned from a backpacking trip that ended at Glacier Point. It was the hottest trip in my 20 years of backpacking. Yesterday the temp at Glacier Point was about 90 degrees. It saw 113 degrees on my dash thermometer on highway 140 leaving the park! I wanted to pass along two pieces of advice based on my experience in the heat: 1. It would be a good idea to take a water filter with youby mdizzl - Yosemite and the Sierra Nevada. News & Discussion