My 2 Hens stopped laying after 3 months and 120 eggs,

[Flachickman]

It is hot here in Florida this time of the year, would this cause a halt in egg production?

 

[Den in Penn]

They can slow down in the heat. Is is also possible that there are other things that are stressing them, a predator prowling around the coop, some change in the environment, or parasites. It is also possible they are going into a molt.