It can be brutal. Thats why i keep several of my "must haves" in fabric pots. (A) the pots breath and (B) i can move them under the deck if i have enough warning. Another item that is great is a large onion or peanut bags. Just place them over a tomato cage. It takes a massive hail stone to penetrate one of them bags. They also breath so if you cant remove them right away you are fine. I use them as make shift sun screens for new plants.
This is two peanut bags i have stretched out for seedlings. Burlap works also. That is what i have behind them.