Is fire affected by external temperature? Can a fire burn at extreme cold temperatures?
In general, ambient temperature does not affect a fire ONCE IT HAS STARTED. As previous answers mentioned, fire needs fuel, oxygen, and heat. The kindling temperature is the initial application of heat to get a fire started. In cold temperatures, this might be harder to overcome. But usually, once the fire has started, it is self sustaining. Moisture, on the other hand, can affect an ongoing fire more readily.