Today it hit 90'  . . .  which might not sound like much, particularly with you guys and your desert temps BUT . . . the dewpoint was 77' AND the humidity was 88%. 
That's hot. 
And I lived in Vegas for 3 weeks in July once (for a seminar) and I LOVE that kind of dry, desert heat. It got up to 120' once and I was still wearing jeans and a tee-shirt and walking around to the store and whatnot. I just didn't feel it that much -- dry heat isn't a problem for me. Also I lived on the desert side of San Diego for most of my teenage years, I know what heat is like, and I LOVE IT. 
But I was melting in the humidity today. Ugh. Humidity is an invention of the devil, I swear! 
Las Vegas has the top spot right now in answer to our question of 'Where do we want to retire?' for many reasons, but the dry heat is a big factor. After living in MinneSNOWta, the thought of living out our twilight years in warmth and no snow (or at least, snow that's rare and disappears almost immediately) is heaven. 
Whitewater