My understanding is that tobacco beetles need it to be at least 73F in order to hatch.

I also know that as the temperature rises, the saturation point of the air also rises. This is important for relative humidity. The air is going to contain a lot more water at 80F compared to 50F, if the RH is the same.

If it's regularly 80F in your humidor, I would suggest keeping the RH lower, like 62%.