What is the geography and climate around the Ruins of Petra?

Bloody hot and bone dry in the summer, cool to downright cold and wetter in the winter (with occasional snow and freezing rain), lovely and dry in the autumn, lovely and slightly wetter in the spring, with brief period of green in April. It is generally a dry semi-desert area. Petra is located in a series of large rock formations where the mountains to the east decend into the Jordan valley to the west