Maybe not on peaches that self-pollinate? The rain could wash the pollen to the right parts, I’d imagine. Not that I know that for sure
My one peach that needs other pollen (JH Hale) didn’t get it due to the freeze taking most of my other blossoms earlier. But 2/3 of those trees still fruited some! Even after 2 different nights where neighbors got down to 21 degrees.
I don’t think the bees noticed those few flowers left enough to carry the pollen over to the JH Hale. (Or it got pollinated and its flowers just aren’t nearly as hardy, which is possible too.)