When grilling your steak, it is important that you keep an eye on the temperature while grilling. You can either do this with a meat thermometer or the temperature prob that is provided with some grills. - Rare - 125F or 52C - Medium Rare - 135F or 57C - Medium - 145F or 63C - Medium Well - 150F or 66C - Well Done - 160F or 71C