But you have to get a pass well in advance for any camping in the valley. Just be aware that you will be surrounded by other people. Still worth it. Best to go in June if you can, because it can get pretty hot in the Valley in July and August. It was in the low 90s there this past week. Yosemite Valley's elevation is 4500 ft. - just like Provo. We were at 7,000 feet so for us the weather was very fine. 70s in the day and low 50s at night.