Base to use for seeing Yosemite in 3 weeks

If you are coming anytime after mid-May, I would split the time in two and spend about half of it on the east side! If you need full hookups, stay at Mono Vista in Lone Pine, at around 6000 feet -- the "commute" up Tioga Pass is not bad in a toad or a truck. If you stay on the west side down near Yosemite Valley, it can be pretty hot, and you look up from 4000 feet to the domes. From the trails that take off from Highway 120 in the high country, you are sitting among the domes themselves, and the air is a lot cooler:



Here is a blog post that may be useful -- lots of photos:

Tioga and Tuolumne Meadows area