integra:

Yes peaches are prone to wind burn and defoliation by constant spring winds. It occurred every year in Amarillo. There seemed to be no lasting effects on the tree or fruit. The damage was mainly to the first 6-8 leaves. They'd end up mostly beaten off.

Peach and nectarine leaves are naturally wavy, crinkled, and folded together. The two sides of the leaf stick together for a period. One thing the wind does do is open up the leaves. In my greenhouse the two sides tend to stick together for a period much longer than outside.