I preffer to have the roots dry faster with more frequent waterings, my prefferences,I do have a black mesh tarp (harbor freight) that i could use as a shade. To tell you truth, I think the plants enjoy the heat. With 100 gallon pots and monitoring the soil moisture (meter). I haven't had any heat stress issues with my plants now or in the past. with exception of late transplants. I generally transplant late april and the temps are usually 70-80'sF
I have found that as long as my root zone stays cool( my smart pots are on the ground in former lawn), the more water/dry events that happens in a set amount of time the faster the plants grow. I have found that keeping the soil moist all the time does not increase vigor of the plants at any time, except seedling stage. Although I do heat stress my seedlings by not watering for about a week after the initial water when the seeds are planted. Whatever seeds pop up are keeper phenos.
No way is 100 degree heat good for the plant, especially with direct radisbt sun, it's just a little to hot,.
In the places I have been (such as Trinity county , lake county, tahima county the temps get hot during the day, really bad , the buds tend to stretch and develop spikes is what I call them,
It doesn't hurt the bud or the production, but does effect the look and appearance of the bud, the bud and the plant will stretch more to disapate the heat.
Of you were not there to tend your plants on a frequent basis or did not water everyday ,especially concerning the high heat levels mulching around the base will help the plant retain water, by as much as 75% ,
Raised beds tend to not evaporate as much as smart pots,
I need to shut up or I will write a book.