Hey there 3ftG , there's only so much you can do with the lights, like raise them just a bit, or make the night cycle that much longer and during the warm hours, but what you really need is to bring the temperature of the tent down sustainably. That's why I am suggesting an evaporative cooler in addition to that, it's fairly cheap and because it's low tech it lasts forever probably. This would bring the temp of your tent down quite a few ยฐC, and hopefully help your plants weather the weather. Hope this helps ! ๐