How Long to Bake Ham at 275 Degrees
It takes around 2½ hours to bake a ham at 275 degrees, though the cook time for a ham can vary greatly depending on its size. For a more precise estimate, multiply the weight of your ham by 15: This is about how many minutes your baked ham will take. It's a good idea to take your time with baking a ham by using a low oven temperature, as this helps the meat to cook evenly without drying out. To check whether your ham is ready to eat, insert a meat thermometer, being careful not to touch the bone if the ham has one. A precooked ham should be cooked to an internal temperature of 140 degrees; if you bought a raw ham, cook it to at least 145 degrees.