Jordan几时下雪？哪里下雪？

https://en.wikipedia.org/wiki/Geography_of_Jordan#Climate 内容：Except in the rift depression, frost is fairly common during the winter, it may take the form of snow at the higher elevations of the north western highlands. Usually it snows a couple of times a year in western Amman.

雅虎天气自己查，看看往年的气候以及气温

约旦属西亚吧？怎么会下雪？