I grew up in El Paso, TX. Most of the summer is over 100, with a few weeks over 110 and usually a few patches of days above 115. Those of us in Texas really do not know better. First six years I drove cars none of them had A/C. In the late 80's I did Army NBC school / training there at Ft. Bliss. Temperatures that week ranged between 105 and 110F. The NBC MOP suit was a heavy black rubber suit, ideal for the heat. At least the desert out in El Paso was blessed with low humidity. In 1993 I spent some time building a 60' tall cooling tower at a steel mill in Seguin, TX. 95% humidity, 100F+. No shade. Couple times an hour they would poor the slag out on the ground next to the tower retaining wall. The humidity would drop to almost 0 and the temperature would shoot up 40-50F for a minute. Just sat there in the tower and soaked in the comfort of the open oven door, then the wave of humidity would come back in and it was time to get back to it...