Welcome to the forum FlowerNovice! Tell us about your peonies, are they planted in the ground or in pots? If in pots and it's already hot in your area they'll probably do a bit better with some shade in the hottest part of the day.
It seems we're pushing the edges of peony bloom times into the higher zones! I'm currently moving my garden from zone 4b to 8a so will be joining the warm group soon....