According to the Holdridge life zones system of bioclimatic classification Las Vegas, Nevada is situated in or near the warm temperate desert biome.
The annual mean temperature is 19.5 degrees Celsius (67.1 degrees Fahrenheit).
Las Vegas has a subtropical hot desert climate (Köppen climate classification: BWh), typical of the Mojave Desert in which it lies. This climate is typified by long, very hot summers; warm transitional seasons; and short winters with mild days and cool nights.
