I'm planning a Southwest / Pacific trip during the first 15 days of April (more or less). I though to fly to San Francisco and, after a quick tour of the city (2 days?), rent a car and follow this way: Yosemite National Park, Sequoia National Park, Death Valley, Las Vegas, Bryce, Antelope, Monument Valley, Grand Canyon and back to Las Vegas to keep the return fly.
If I read enough about this area (really big), it's possible to found some road closed during this period and the temperature could be really cold at Yosemite and Sequoia. Is it correct? The problem is that we have our vacation period only in April, so, what do you suggest about this way? Is it possible to follow it during this period or will find bad weather conditions (like rain or cold)?
What should be the best US area to visit during the first mid of April?