I worked in a forge shop extruding pipe which was around 2800 degrees when it went into the press. Yeah it wasn't very humid in the forge shop.
Dry heat.....oh that makes 120 degrees just right for a picnic in the park. Dry is better than humid but hot is still hot. LOL
Just like in Houston during the summer most road construction is done at night because the daytime heat is just to much to be working outside. From what I have heard Arizona is the same way.