Especially since WA state thinks that we should all just live in caves so as not to add to "climate change".

If I was going to do a summer/winter house, with the goal of mildest weather year round, I think there are a few good options:-Phoenix and Flagstaff: not too far apart, yet vastly different climates. 

Appraisals will only count climate controlled space as housing SQFT. 

Real estate investors have to be flexible and be able to adjust as markets and political climates change.

They don't get into any of the other factors that you mention.So this list basically underscores a national trend of strong growth in the mountain states and people moving to warmer climates.  

Climate change. 

(1)Regarding water it seems like they have solutions it will just means that developers/contractors will have to invest extra to add water options and most likely will increase the cost of new constructions but you are right I need to look into it more.On the other side because of climate changes TX will be suffering from more extreme storms (tornadoes and floods) that will make it less desirable and increase insurance costs?!

As owners, we can remotely change door locks, AC/climate control, more - and exterior cameras provide us with a complete overview of the property. 

You should be looking to buy at all times, there is opportunity in this climate.

Find an asset, underwrite it to a high scrutiny and talk to local professionals to see how the climate has been for tourism and STR's.