Being warm all year around, is there a lot of humidity in Florida? Where is your humidor located? Near a window, direct sunlight, in the closet, etc? Go get some beads and do not add distilled water when you put it in your humidor. If it is above 71% humidity in there already, the beads will soak up excess humidity. IF your humidity still stays the same, then it's your hygrometer that has issues.

Andrew