Costco Hours: Tuesday, July 4, 2017 by Rhonda July 16, 2020 421 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 NEW Orange Dreamsicle Cheesecake at Costco!! Costco Coupon Book AUGUST 2024 Costco In-Warehouse Hot Buys Sale – JULY 2024! Costco Business Center Coupon Book JULY / AUGUST... Costco Sale: Kirkland Signature Hexagon Dog Bed Costco Member Savings Days 7/15/24 – 7/19/24