Growing up in Florida I know that this is a normal occurrence, but if you were walking down the street and saw a bunch of, what appears to be dead iguanas, you might think the Apocolypse is coming.
When it gets below 40 degrees in the Sunshine State, Iguanas can’t handle the cold and their bodies go into shock. The blood flow slows, the iguanas stiffen up and fall out of trees. At first glance, they may appear dead but in reality, they are just temporally frozen. Now, if they are exposed to the cold weather for days at a time they will eventually die, but normally once the sun comes up and the temp rises the Iguanas will start to move around again.
So, if you are vacationing in Florida when it’s cold out and you wake up to Iguana rain, don’t worry. The world is not coming to an end!