Hi Mary Stella ~ I don't mean to exclude anyone from northern climates at all. I do hope herb growers from the colder zones will join in on the discussion also.
Years ago I was surprised to learn from a northern gardener that oregano is winter hardy. Here I had been bringing a container of it inside every winter. Thanks to her, I don't do that any longer.
I will suspect that although the foliage gets frozen to the ground, there are many perennial herbs that do well for you. What do you grow?
By the way, this winter some areas of Alaska are warmer than we have been. Go figure...