Summer in the WY Rockies is pleasant, highs in the high 80s, lows around 50, and dry too. At our CA place the predicted highs are over 100 all this week with one day supposed to hit 110 and others somewhat close.
Here we enjoy nature's air conditioning. In CA we'd be running the AC 24/7 and spending a fortune on electricity.
There is always perfect weather happening somewhere, the key is to be where that perfection occurs. Being retired sure helps, but people who have telecommuting jobs could do it younger.
Our CA place has great springs and falls, and they're longer than normal too. What is short there is winter, it lasts only a couple of months most years. So we go somewhere warm for those two months and it's all good.