Snowman9000 wrote:
I added this question to the first post.
So how about going up the Pacific coast? How would it be in mid-May if we go all the way to the top of Oregon? Then, check out Oregon, then maybe Nevada and Utah on the way back to AZ? Would we likely find moderate weather on that routing?
Do weather   Do weather   Do weather , but know, we start our garden in March.
 But as was said, spring comes late in the high country. We did Brice Canyon one year in June, on a cold misty Rainey day mixed with sleet.  next year we were hoping for better pictures in June and it was 83 and clear as it can get.
And remember the weathermen only get the weather right 50% of the time :)