So sorry, Marsha! I can relate. We had terrible storms throughout June here in New Hampshire, too, though no hail (yet). Some of the rains and winds were so fierce, they felled plants and washed young seedlings right out of the ground. In other areas, the water pooled up over the young seedlings. The hilliest garden is riddled with erosion gullies in the few unmulched areas. Arrgh!
The only thing I can think of to help protect your remaining plants this season is to cover all exposed ground with a thick organic mulch to release the rainwater more gradually to the soil. Add more around the taller plants.
The plants that look healthiest in my various gardens are those growing in raised beds with extremely well-drained soils manufactured from about 1/3 each of seed-starting mix, compost, and mineral soil. These are also closest to buildings, so they receive a little protection from the wind. Maybe next year you could try raising your planting beds a few inches (although this makes them more drought-prone, so you have to keep a close eye on the soil moisture).