I feel the same way once acclimated here. Can't stay warm when it dips below 50 here, fortunately I adjust ok when going to a cold climate.The coldest I remember ever being was in Miami, FL in February or March. I had a gas jockey job and had to be there at 5:00 am and the store part wasn't open until 7ish so I had to work outside for a couple of hours. The temp was in the 50's, but I swear I was colder than I'd ever been in Iowa.
Jeff Livingston