it is as extreme as I make it out to be in many places in eygypt, links from your link

city of 400000, where it does not rain

https://en.wikipedia.org/wiki/Asyut#Climate

ancient heart of eygypt, modern city of 250000 where the rain is a sort of academic thing that can be proven scientificly, but will never get the ground wet

https://en.wikipedia.org/wiki/Luxor#Climate