Temps in the mid to upper 90's. Be sure to bring and drink plenty of water. I usually have a small cooler with ice just in case someone has an emergency such as heat exhaustion or stroke. Anyone is welcome to throw a handful of ice into a towel at any time.
Also suggest a wet towel to wrap around your neck periodically. This will help to cool the core. Most of us will be fine but some may be more vulnerable. Lets keep an eye on each other for any issues/symptoms.