Humid yes but only in mid to late Summer. Winters can be extreme. Two years ago it got down to -5 degrees F. That is the thing i have my tropicals outside. I never have protected my Hardy carnivorous plants except one time. That was only because the temps during the day never got above 20 degrees F. for a week and they were in small pots. I have to many tropical carnivorous plants to put them in my house.