I assume those are the daytime highs?
You might put the chicks out in the morning or evening when it is cooler, then check on them as the day gets hotter. If they are panting and spreading their wings and looking very hot, you could bring them in for a bit to cool down, then put them out again later.
The idea would be to build their tolerance for the high temperatures a bit gradually: let them start to pant and spread their wings, because that is a natural way for chickens to cool off, but don't let them get badly distressed. And bring them in for less time each day, working up to the point where you do not bring them in at all. Hopefully you can reach that point within a week or so.
In future, you might consider moving chicks out when they are younger than 7 weeks. Day-old chicks should be pretty much fine at 97 to 100 degrees. And if they experience that every day of their lives, they will remain able to deal with it. So for newly-hatched chicks in your climate, it's just a matter of coping with the night low temperaures. They might need a brooder plate or other heat source at night for the first few weeks, but that would not last long (maybe two or three weeks: you would check by looking at them before sunup, when the temperature is as cool as it gets. If they are sleeping away from the heat source, they no longer need it, so you can remove it.)
