Some people store trailers in freezing weather - no problems when done right. Some people store trailers in the desert - no problem if done right. That said think about what might go wrong in high heat. Plastic can soften - remove any vinyl sheeting, bags, film-like stuff, etc. fully inflate tires, try to park where there might be some shade (right...) drain all the water - water heater, storage tank, all holding tanks, etc. Leave NOTHING food wise on board as desert critters are desperate for: 1. water, 2. food, 3. shade. Be careful when coming back to open up the rig as critters may be hiding where you least expect. Now think about venting the rig. If rain is not an issue, a very small gap in window or upper vent may help tremendously. It can easily get over 150*f inside. Cover the windows from the inside with foil insulation to prevent any sunlight from entering. That ought to get you started. Also check with others whom leave their rigs in place and scurry back to the N.
Brenda and John
'14 Ram 3500 MCSB 6.7L HO PullRite 16K S/G, Grey Columbus 320RS Camped '14 - 146 days/'15 - 196 days
USN-EOD(Ret), Master Chief, 30 yrs,
Master Blaster of the Navy