Costco – Memorial Day 2022 by Rhonda May 27, 2022 468 5/27/22. Costco will be closed on Monday, May 30, 2022, in observance of Memorial Day. We are extremely grateful for our brave military who have sacrificed their lives in service of our country. 0 FacebookTwitterPinterestEmail previous post Coolers at Costco! (Summer 2022) next post Core 10-Person Lighted Cabin Tent – Costco Sale! You may also like Halloween Candy Deals at Costco! (2024) Costco Closed on Labor Day 2024 5 Ft Tall Penguin w/LED Lights at Costco! Glass Raindrops w/LED Lights at Costco! Orange Shrimp Yakisoba in the Costco Deli! NEW Orange Dreamsicle Cheesecake at Costco! (VIDEO)