Tough question. They keep everything at about 72 degrees. Some think that is cold, others thinks that is hot. Prepare accordingly.
California's labor department lists 72 as the ideal temperature for an office, and our office is at that temperature, and half the people find it cold, and half find it hot.
I have a friend who is an air traffic controler.....she says that if their officer gets WARMER than 60, alarms go off because the failure rate for their computers rises greatly above 65 degrees.