Not sure, the article that I read said the temperatures would be around -128C. At that temperature and in that location it would be encased in a tomb of carbon dioxide ice, and the cold would be enough to crack the solar arrays and break the circuit boards. So you'd have to either be able to move enough to get out of the danger area, or perhaps generate enough heat to not be frozen solid. I'm guessing neither would be very easy to combat due to payload weight issues (getting off earth) and the energy needed to offse those extreme conditions.

It was named Phoenix as the mission was originally scrapped after the polar lander crash. When they revived the project they renamed it Phoenix. It's also unlikely that it will be revived in the next martian summer. The reason being that where the rover is, it will be cold enough for the solar cells and other components to be destroyed.