Costco June 2024 Hours. Welcome to the costco customer service page. Costco, a membership warehouse club, recognizes seven major holidays throughout the year, but juneteenth is not one of them.

According to usa today, major restaurants like mcdonald’s, dunkin’, wendy’s, kfc, and others will be open. Use our handy guide to learn all about costco’s holiday hours and discover how to make the most of your shopping experience with tips on their return policy, price matching, and more.