Ground beef is good in the fridge for about 1 to 2 days if it is raw. Once cooked, ground beef can be safely stored in the fridge for 3 to 4 days. It should be kept at a temperature of 40°F (4°C) or below to slow bacterial growth. If not used within these time frames, it is best to freeze the ground beef for longer storage, where it can last for several months. Spoiled ground beef usually shows signs like a sour smell, a brown or grayish color, and a slimy texture, and should be discarded if any of these are present.