Yes, I should have been more clear! What I meant to say is that snow on the ground does not necessarily mean that the temperatures are going to be colder than you would normally expect. And what you should normally expect at 10,000 feet in early July the Sierra is a possiblity of occasional freezing temperatures at night. I in no way meant that temps in the mountains would be the same as temps in Lee Vining. But you do start off at that elevation, so be sure to have flexible clothing to handle temps from low 90's to freezing. I camped at nearly 11,000 feet last week and it was well above freezing. Each day is different. The best bet is to check the NWS weather reports - you can now click on different elevations and get fairly reliable predictions of temperatures for a 5 day forecast.