I saw it in late August ( Fall season)....I did a drive from the Mohave Desert to Flagstaff..then headed south to Sedona. Monsoon season? (I am not sure if it comes in Spring as well) The Afternoon monsoon rains and winds kick in then it clears out to bright deep blue skies with sights and smells of all kinds of flowers and cactus. I traveled route 66, (was sober) and it was breath taking. When I wasn't driving I got high and everything was magnified by the thousands....along with positive good vibes (vortex energy). Mushrooms take you even higher ( if you so choose). But a person can be straight as an arrow and enjoy it.
No wonder the Indians thought AZ was so damn sacred. The sculptured red and orange rocks look like fuckin people and animals... everything is alive. Kinda hard to explain, better to see and feel it for sure.