The are moving from California to the Ozarks, and it is a place called Cherokee Village, where the prices are really good and it's really a nice place. There is a web site
www.cherokeevillage.org
The various retirement communities along the line between the two states have grown tremdously after a slow start in the 70s.
Golf courses, nearby lakes, some of the fairly large and an easy standard of living with little snow.
You do get some ice in the winter and the occasional big storm but otherwise the biggest adjustment will be the July and August humidity and dealing with the bugs.
Wasps, chiggers and the like will take getting used to on the level that exist in the Ozarks compared to your current region.
Spring and fall are "drop dead" beautiful and there is plenty to explore within a four hour drive.