Roanoke Smoke,If the thermometer is calibrated, I would say the temp in the dome would be.....225°.But, I'm guessing that you are asking about the actual cooking temp at the grate. Depending on conditions like amount and weight of food and size of fire, the cooking grate temp can be around 30° lower. Get yourself an oven thermometer, the kind meant to sit on the rack and fool around with it until you figure out the relationship between dome and actual temps.~thirdeye~