The ideal temperature for smoking pork butt is around 225°F. However, some pitmasters argue that 250°F is optimal since it speeds up the smoking process. The internal temperature of the pork butt should be between 195°F and 204°F when it is ready. The cooking time can vary depending on the size of the pork butt, the smoker, and the weather, but it can take up to 6-12 hours. It is recommended to use a quality meat thermometer to keep track of the internal temperature of the meat.