Sorry to hear that. That's the downside of living in these cold zones - long and brutal winters and summers where you get only one chance to get a crop.
Some plants can come back faster than one might expect, because there's a lot of biomass (energy) stored in the root network.

oh no! that's terrible. I hope it recovers enough for you to get to harvest some of your vegetables.

Yikes! I know how that feels! I was victim to a bad hailstorm in early June that pretty much shredded my plants. Golf ball sized too... I was devastated and thought it was the end of my gardening season. Thanks to the good folks here, I kept faith and plodded on.

Happy to report today that 85% of my toms survived and are now thriving and fruiting, my Zuke is pumping out fruit, and I've already harvested my cauliflowers.
Some plants are just stronger than we give them credit for.
And if they don't pick up, there's always time for the fall crop!

Good luck! :)

Sending you good gardening vibes! I know how hard your zone can be to garden in. I can have similar weather although probably not as extreme. Every year is interesting to see what will happen and what the weather will be. I am always hoping the weather and pests will leave my garden be. It has been a roller coaster as a newbie. Keeping my fingers crossed your garden recovers fully!