Here's why:

* Hail Formation: Hail forms in thunderstorms, where strong updrafts carry water droplets high into the atmosphere. These droplets freeze and form ice pellets. As these pellets are repeatedly carried up and down within the storm, they collect more water and ice, eventually becoming large enough to fall as hail.

* Temperature Requirements: For hail to form, the temperature needs to be below freezing (32 degrees Fahrenheit or 0 degrees Celsius). At 60 degrees Fahrenheit, the water droplets wouldn't freeze, and the process of hail formation wouldn't occur.

Therefore, while a thunderstorm could occur in temperatures around 60 degrees Fahrenheit, it would be unlikely to produce hail.