Welcome to Colorado! In the middle of summer, during the day it will be hot, however the evenings cool down to as low as 40 degrees. Because the altitude is high, we are reminding everyone to drink plenty of water and do not skip meals. We are discouraging caffeine and a lot of salt at least 1 week prior to the conference. Both of these cause dehydration. Because of the elevation, we are closer to the sun – whenever you are outside you should wear sunscreen.