Costco announced it would close all 617 stores across the United States on Monday, May 26, 2025, in observance of Memorial Day. The decision echoes its long-standing policy of closing for major federal holidays.

You can head to the stores and malls. The beach, too, because there’s just a 20% chance of showers and thunderstorms, with highs near 90 on Monday, according to the National Weather Service. All of the above are open. But courts, public libraries, and mail service observe the holiday and will be closed. So will Costco.