With some places in the United States regularly well over 100 degrees Fahrenheit, it’s a remind how how incredibly hot it can be outside this time of year.  Your servers are in datacenters with high end, industrial grade cooling systems designed to keep them much closer to (or right at) 68 degrees Fahrenheit.
Why so cool?  Well, it’s not because we love the electrical bill.  First and foremost, keeping the datacenter at a reasonable temperature means that servers don’t overheat.  By why *that* cool?  Well, that’s about the optimal temperature for not only keeping the server from overheating, but keeping it at full performance and preserving the life of the hardware.  If we were to keep the datacenter in the 80s or 90s, the hardware would probably still run, but you’d experience a lot more hardware failure.
When it comes to performance and reliability, cooler is always better.