Costco Hours: Memorial Day by Rhonda July 24, 2020 562 Costco will be closed on Monday, May 26, 2014, in observance of Memorial Day. 0 FacebookTwitterPinterestEmail previous post Costco Books – The One & Only by Emily Giffin next post Costco Sale – Rubbermaid 3 Step Aluminum Step Stool You may also like Costco Coupon Book APRIL 2025 Costco Business Center Coupon Book: APRIL / MAY... Costco Hot Buys Sale: 3/29/25 – 4/6/25 Permasteel 46″ Rolling Work Bench at Costco! Bond Bloomington Cascading Cup Fountain at Costco! Costco Unadvertised Sales! MARCH 2025