It gets hot here in the summer. i just take 2 rifles as some others here seem to do. i leave very early in the morning and don't seem to have a problem with the heat.shorter earlier shooting sessions with more frequency, seem to be the answer for myself in the summer months.in fact the lil lady and i have a outing planned for the morning. we will be out shooting by 6:00 or 6:30 in the am.. Ray