Costco Hours: Tuesday, July 4, 2017 by Rhonda July 16, 2020 July 16, 2020 7/4/17. Happy 4th of July! Costco will be closed today. 0 FacebookTwitterPinterestEmail previous post Costco Sale: The Original Green Pan 2-Pk Ceramic Skillets $31.99 next post Costco Sale: Water Sports Stream Machine 2-Pk $9.99 You may also like 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! Infinity Boss Three Disc Ladies Comfort Bike –...