07/09/20: Costco has modified some of the Special Operating Hours for Members Ages 60 or Older again: Costco warehouses are currently open for Special Operating Hours from 9 to 10 a.m., Monday through Friday. Due to the increase in COVID-19 cases, Costco will maintain current Special Operating Hours until further notice. These Operating Hours are for … Continue reading Costco Special Hours of Operation and Covid-19 Changes (Updated 07/09/20)