I was reading that in some areas if warm enough Peppers can live for years. I read one guy had a 6 year old Habanero plant, another a 2 and 3 year old Jalapeno. I never tried it and I am gonna try it with a Serrano pepper and red bell pepper.
I does not get too cold where I am at. Usually the 40s, some rarer instances in the 30s. I don't know the absolute coldest temps they can take. One guy said he had a pepper plant survive a light frost, and another said he had one survive 28F temps. Some of them used protection too. But I am thinking they can't survive temps like that for too long. Like a whole month etc.