I can't say from personal experience in CA, but I suspect more similarities to CO, versus to the east. The sun intensity definitely warms the snow more and moisture/humidity can become a player in the high twenties and low 30's. Aggressive base structure helps as does warm temp waxes. Remember wax temps are relative to snow temperatures, not air temperatures, so if you are gaging your selection relative to air temps, it may be a little different from region to region. The best option is to use a snow thermometer.
Ziggie, the warm wax may be good for both hot scraping and the wax of the day, but erring towards a colder wax or blending is another approach if you are uncertain. You'll get longer durability with a colder wax and less drag if the temps drop.