Costco Hours Good Friday 2024.  — the majority of costco locations open at 10:00 am and close at 8:30 pm on weekdays and at 6:00 pm on weekends. It’s hard to believe but the unofficial end of summer is here.

 — the warehouse store is known for closing on labor day, unlike its competitors bj’s and sam’s club, which both remain open. While there are some exceptions, the majority of warehouses close at 8:30 pm monday through.