My sister lives very near you- she's in Ft. Lauderdale. She grows orchids outdoors all year and I've been to visit and SEEN the iguanas and curl tail lizards y'all have! Not to mention the parrots in the trees!!!!On rare occasions it can get into the lowers 40s. But that's rare. Most winters only get to about 52 to 54 degrees.
In South Carolina, where I grew up, it got into the lower 20s and I loved it.
...but your SUMMERS!!!!!!! They get MIGHTY HOT!!!!! And I won't even mention the "H" word!