I live in the same LA neighborhood/microclimate as Mark. In the 17 years I’ve been here, we’ve had frost maybe… a dozen times?.
Two or three times some years, none at all most years.
Only one freeze that really killed much of anything. (Who knew oleanders were frost-tender? Half our freeway berms were screened with 'em!)
But freezing pipes isn’t really a thing here. (-:
