Will hard boiled eggs be easier to peel after sitting in the refrigerator overnight?

Absolutely. If you want to use them right away, then put them in cold water until you can handle them long enough to peel them (about 10 or 15 minutes). But if you don't need them right away, they can be put in the fridge for a few days and peeled anytime. You can boil up a few and then eat them as hard-boiled eggs during the week. Or boil up eggs ahead of time to make into deviled eggs the next day.