You might try piling dried leaves around it once it dies back, then remove them in the spring when it is time for it to grow.
This is a cut and paste from Stark Brothers, just for kicks.
Brown Turkey Fig
Ficus caricaCatalog #: 20476
An everbearer for the North. Enjoy fresh figs starting in June, or dry them for tasty treats. Keeps well. Needs protection below 10 F.
Pricing Information:
Qty Price
1 $15.99 / Each
3 $14.99 / Each
Recommended Hardiness Zone Range: 5-9
And here is one from Burgess. This one does not specifically say it is not grafted so I'd have a question or two before I ordered it.
You can have a true fig from trees that reach only 6 feet. Dwarf Fig trees produce sweet fruits that are good for eating fresh, canning, drying or in cookies or cakes. Where temperatures drop below 5 F, they need tub planting so the tree can be moved to shelter to both ripen the fruits and protect the top. Root is hardy anywhere, but the top will die back below 5 F. The Dwarf Fig tree may grow in zone 4 with protection and is self-fertile but will do better with 2 trees planted.