Most house fires burn at an average of 1,100 degrees Fahrenheit, according to the Livesafe Foundation. This temperature varies according to the source of the fire, the items burned in the fire and many other factors.
Most house fires do not burn hotter than 1,200 degrees Fahrenheit. This temperature is typically associated with the hottest portion of a home, which is in the roof area. Homes that burn for longer than 30 minutes or consist of multiple levels sometimes burn at higher temperatures.
Most fires are caused in the kitchen, although heating equipment, electrical malfunctions, cigarettes and other sources also cause house fires.