I'm in eastern Pa, I uncovered mine Last week. They should be okay with this weather, they're still dormant. If they're kept inside a garage and grown in container, then you should worry about the freeze since they probably not fully dormant. If they're grown in ground in the winter and wrapped, They are usually fully dormant.
The fig branches are hardy to 12-15 F degree when fully dormant. If they're in a container never allow it to go below 32F.
So, Marcantonio your trees should be fine if you grew them in ground.
Ciao