Houston, and Texas in general, does seem to have gotten colder the past couple of years.
I’m on Florida’s Nature Coast, about 75 miles north of Tampa. We’ve had some good weather so far, but there were a few mornings recently where it hit 40 degrees. The good thing here is if it gets too cold, we can always drive south. Unless you’re planning to cross the border, there’s not much further south you can go!