There's a difference between desert and high desert.

Desert is a lot drier, a lot more hot over 105 degree days and has a lot less rain.

High desert is around 10-15% humidity, more or around the same rain, has much less heat due to higher elevation.

Florida is probably the worst, most populated state just by humidity and heat, then you got south arizona/california desert where wayne lives idk where I just know in that general area.

There are some parts of middle north to north arizona that are as cool as nebraska. Once you go past middle of arizona you are already away from all desert high temps.