Costco Closed on July 4, 2020 by Rhonda February 4, 2021 February 4, 2021 7/4/20. Happy Independence Day! Costco will be closed today. 0 FacebookTwitterPinterestEmail previous post Nuwave Brio 6-Qt Air Fryer – Costco Sale! next post Cuisinart Custom Select Toaster-Costco Sale! You may also like Costco Unadvertised Sales! JULY 2022 Tommy Bahama Solar LED Path Lights – Costco... Ove Decors Broadway 60″ Vanity at Costco! ProKeepers 4-Piece Deli Container Set at Costco! Sony 2.1ch Soundbar + Wireless Subwoofer – Costco... NEW Mini Raspberry Cakes at Costco!