Costco Hours: Memorial Day by Rhonda July 24, 2020 337 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 Vitamix Venturist Pro Blender – Costco Sale! Yardistry 12′ x 14′ Contemporary Gazebo – Costco... Costco Sale: Ninja NeverClog Cold Press Juicer Totally Bamboo Destination Washington Cutting Board at Costco! Costco Unadvertised Sales! APRIL 2024 Costco In-Warehouse Hot Buys Sale: APRIL 2024