Hello Sarahbean19, they do like lots of full sun, the more heat and direct sun the better. However, you will have to treat them like tropical plants during those conditions. You have to water them frequently, I have to water mine daily when we are hitting 90F and higher. We got very, very dry conditions here too, humidity so lousy.
I looked at your area's weather forecast and your conditions they are still very, very hot, so it is okay to water them daily. Just make sure you remove the excess water if any in the drip tray you have, though I seriously doubt it will accumulate any with the excessive heat conditions you have, unless of course you get occasional downpours.
I start doing watering intervals again, when temperatures starts to go down, like right now, we are back into the high 70F's for our daytime high, Usually in summer we were peaking at 100F to 105F and humidity at 20% to 0%. I also monitor our overnight temps, so like this time, we are getting early Fall like conditions, getting low 50F's overnight. I am just bidding time a bit, would surely start bringing my Adeniums indoors, it is already showing me leaf drop, as it gets ready for dormancy. So I have been doing watering intervals now.
Pretty much observe your ambient conditions, your daytime highs and lows. If you are still hitting 100F, it can take daily watering gladly.
