The Definitive Guide Understanding Walmart Gas Station Hours: More Than Just a Number Location, Location, Location! The Definitive Guide So, you’re planning your day, need to fuel up, and Walmart is your go-to. Generally, Walmart gas stations follow the opening hours of the main Walmart store itself, typically opening between 6:00 AM and 7:00 AM . However, this can vary, so let’s dive into the nuances of these fueling havens and get you on the road with confidence. Understanding Walmart Gas Station Hours: More Than Just a Number While 6:00 AM to 7:00 AM is a reliable starting point, treating it as gospel is a recipe for potential frustration.