Costco – Memorial Day 2023 by Rhonda May 29, 2023 635 Costco will be closed on Monday, May 29, 2023, in observance of Memorial Day. We are extremely grateful for our brave military who have sacrificed their lives in service of our country. 0 FacebookTwitterPinterestThreadsBlueskyEmail previous post Happy Hop Shark Cave Adventure Inflatable Water Slide – Costco Sale! next post Solo Stove Mesa Tabletop Fire Pit 3-Pack – Costco Sale! You may also like Costco Coupon Book SEPTEMBER 2025 Costco Hot Buys Sale JULY 2025 Peaches and Cream Bar Cake from the Costco... Fried Chicken and Waffles at Costco! Costco Coupon Book JUNE / JULY 2025 NEW Costco Executive Member Benefits Starting June 30,...