Actually, that’s correct.
The humidity adds to the load on the AC. Cooling from 95 down to 78 is much more expensive in FL than AZ.
In AZ, we never kicked the AC on unless it was above 110 with humidity. Humidity affects how a person rejects body heat and thus in humid conditions, you have to cool to a lower temperature to feel comfortable. If fact, I remember many a day in AZ with the outside temperature above 100 where we ran our swamp coolers and were relieved to have the additional humidity provided.