From my own personal experience beetles will hatch if the temps rise and RH remains stable. I keep my RH at 64-66% in my coolers using a combination of Boveda and Heartfelt beads. I was doing some organization of my coolers and moved them into my office because I have table space to work on. Because of the computer equipment my office can range between 70-78 degrees. The week or so that I had everything in my office I had beetles start eating away on a Victor Sinclair. Luckily it was caught early and was an isolated incident. But the particular cigar had been in a cooler at 65% with temps ranging from 60-72 and did not have an issue for months. It was only when the temps raised while in my office that they began to hatch. RH never changed.