If that desert is anything like the deserts in So Cal,it's going to be HOT!!!! in AUG,100*+ hot,all day and half the night.Then when it cools off it will be 85* for a couple hours before sunrise.It's doable,but you better make sure your carrying enough water.My motto,better too much than dead.

I can't give you specifics about your route,but I ride/play in the So Cal deserts alot.When it's a 100* + outside(Death Valley/Joshua Tree/Anza Borrego),25 pounds of water is a JOY to carry.

I carry an old 5gal collapsible type water container.Then fill it as I see fit,strapped to the top of the back rack.I carry it at all times,it's part of my normal packing list.I don't remember ever filling it completely full while riding for any kind of distance,but I can carry almost 1 1/2 gals on the bike alone.