If I may, Florida is a BIG state.............I am in the most northern part which is over 400 miles from "the Keys"........we do get a winter up here. Normally Jan and Feb are our "cold months". Now, cold to one person may not be cold to someone else. I have lived here since 1965 so I have seen one of the coldest winters on record.....way back in 1989......that was UNUSUAL......it snowed. But that is NOT normal.
Once you get to the center of the state (Orlando for example), and south? It is like we are in 2 different states. I don't know when you were here that you needed wool, but it that is not normal, especially, for South Florida.
Now, as for what type of "winter attire" people own? I can only tell you I have several jackets but they are not puffer.........I have a fleece type from "Columbia"........if it gets so cold, I put on long sleeves and that jacket. I own a jean jacket......I own several sweaters as well. Some heavier, some not so much.
Folks in South Florida? One of my closest friends is in Miami........below 65 she gets a chill, but she doesn't own what someone from the Northeast or Midwest would wear..
Didn't mean to go on so much but just wanted give a bit of insight to how big our state is and you must have been here on a rare occasion of "REALLY COLD".