Maybe the Global Cooling stuff we were fed in the 1970's was right too!
I was living in the Tampa Bay area of FL on Christmas eve of 1989 when it snowed and sleeted all the way down to south of Ocala. My FIL was driving home from near Pensacola and got stuck in the massive traffic jam on I-75 that stretched from the GA state line down to about Brooksville. Cars and trucks were stranded on the road or slid off in the median every few hundred yards. It took him 15 hours to make the 450 mile drive that normally takes 7-8 hours.
Where I was living it snowed for about 2 hours late Christmas eve, but the ground was too warm for it to stick. Next morning there was a dusting of snow on car tops and shingle roofs but nothing on the ground.
I have lived in several places in FL for most of my life until I moved away in 1996, but I had never seen anything like that down there before that time. It has to be really crazy weather when it snows in FL or south TX.