I went out last night and it was 82 here in Indiana. I hunted from the ground in a bean field and after changing my short sleve shirt after hiking in was pretty comfortable in the shade. If it's not humid and there is a little breeze it's doable with relative comfort. Here in Indiana when the sun begins to set it cools off quickly this time of year. I simply wear a thin pair of pants and a wicking type jersey long sleeve with my bug suit and turkey face mask,light gloves and floppy junke hat. Take some clean up wipes with you to wipe the sweat away and some cold water to cool yourself down for scent control. The deer started coming out at sunset right on cue, unfortunately some guy in a motorized parasail buzzed the deer and spooked them back into the woods,hunt over. Take care and don't let the heat keep you out the deer still move even if only with 30 minutes of light left like last night for me.