One expects the desert to get very hot during the summer.
https://www.ktnv.com/news/how-extreme-heat-affects-infrastructure-across-the-las-vegas-valley
However, sometimes it's too hot even for long time residents.
https://www.8newsnow.com/news/local-news/extreme-heat-in-las-vegas-challenges-homeless-population/
https://en.wikipedia.org/wiki/Las_Vegas#Climate
https://thedigitallabyrinth.blogspot.com/search?q=the+desert