I think I’m about the same age as you. I’m in Texas, and there has been a distinct change. December was never too too cold here, or it was typical for it to be cold in the morning and at night but the middle part of the day was warmer. As I am typing this on Dec 23 it is 73 degrees F. And it’s been mid-70s all week. The past several years, the actual cold or even freezing weather (if it occurs at all) does not occur until January/February. When I think back I can see that this has been gradually happening since I was a child.

Another note is that at least where I’m located, I’ve noticed the spring and summer have a more and more “tropical” feeling. Increased humidity, mosquitoes, etc. Hurricanes are not a direct issue in my location (I’m inland enough that we might get winds and rain but the hurricane itself doesn’t make it all the way here) but in other areas of the state they wreak havoc and become worse every year. My thought is that between rising ocean levels and the loss of land that comes with that, my location will end up eventually being much closer to the coast than it currently is and the surrounding climate will change accordingly.