This has been well-studied by disaster recovery and business continuity boffins. There are sites that are known to be (1) effectively disaster-free, whether earthquakes, severe weather, volcanoes, tsunamis, wildfires, flooding, etc, and (2) sufficiently connected to commerce and the economy that you can reasonably build and fully operate a business from there. Climate change has relatively little impact on the suitability of these sites, both in theory and in terms of modeled scenarios.
The two cities I’ve seen most commonly used for these purposes are San Antonio and Salt Lake City. Phoenix and Las Vegas are also sometimes used. Most of the sites are in the western US away from the coasts. I believe parts of the upper midwest are also sometimes used for these purposes, though these areas have to contend with extreme cold (which is more difficult to deal with than extreme heat).
Phoenix and Las Vegas may be a great place for a secondary data center. But for humans, they are very vulnerable to water shortages, and power outages during the summer can be deadly. I have seen them referred to as places people weren't meant to live, more than once.
The two cities I’ve seen most commonly used for these purposes are San Antonio and Salt Lake City. Phoenix and Las Vegas are also sometimes used. Most of the sites are in the western US away from the coasts. I believe parts of the upper midwest are also sometimes used for these purposes, though these areas have to contend with extreme cold (which is more difficult to deal with than extreme heat).