The Friday File: 2.5% of American order steak rare, 22.5% request theirs medium-rare and 37.5% ask it be medium. Medium-well is requested 25.8% of the time, and well done 11.7%. The cut grilled least, prime rib with almost 40% of diners ordering it rare or medium-rare. Chefs consider steak with an internal temperature of about 120 degrees Fahrenheit rare, 140 degrees medium, and 155 degrees well done. Happy Memorial Day!