I've found most aloes can take the full sun in AZ during June and July when it's 110-120 degrees. After they are acclimated and in the ground.
The issue is the monsoon season. August - September. This is when we cool down to 105-110 but humidity climbs to 50% and nighttime lows are 90-95.
What I've read is the need to transpire (all plants do) but aloes do it differently (forget the scientific term) being 80% water. When they can't sweat because night time temps don't get below 85, they rot away.
I do not water August - September. Aloes and many, many other plants go dormant like people (dog days of summer) during this time. I've tried watering and lost dozens of plants. I don't water and lose 1 or 2.
Beng in the landscape biz I can't stress the importance of a proper spring soil prep and micro nutrients . Ask any farmer, and they'll tell you the same, "take care of the soil, and the soil will take care of you." We don't need fertilizer in AZ with our fertile soil. We just need to get the stuff (carbonates and bicarbonates) in a soluble form. Ca and Mg. Make your plants happy in the spring and they'll survive the summer.
Also, compared to areas of Baja and SoCal, I bet in the Phoenix metro area, we only get 6 true growing months a year. Maybe 7. We get more sunlight than just about anyone, but our high and low peaks put a dent in our growing months.
