I am attaching a copy of the NOAA Heat Index Chart (not as accurate as the Wet Bulb Temperature, but it is pretty close) and a chart listing the signs/symptoms of Heat Exhaustion/Heat Stroke and the treatment for both should you be practicing outside normal training room hours, off campus or on the weekend. Also, remember if the heat is intolerable for you, it is much worse for your athletes so please use your best best judgement when conducting practices.
Lastly, please make sure your athletes are drinking plenty of water before, during and after practice to make sure they are staying well hydrated during these first few weeks of getting used to the heat. They should also be doing their best to hydrate during the school day and at home as well. Also, please remind your athletes to eat a good lunch and some type of snack before practice, so that they have some type of fuel source to get them through their workouts. This will help eliminate a lot of the upset stomachs and vomiting that may occur due to having nothing in their stomachs for the acids to break down.
Good luck this season and stay safe!!