This has been stated in another thread, but I’m also from SoCal. Due to our local restrictions (and my desire to never be that guy who has his sprinklers running during any precipitation) I’ve implemented IFTTT. Rachio published an “applet” (at the time, it was referred to as a “receipe”) called “If tomorrow’s forecast calls for rain, then rain delay”. Within that applet, you can designate how long of a rain delay you want.
I’d look at your basic schedule frequency, and add to that in the IFTTT applet to make sure things didn’t turn on for a minimum desired number of days.
Try it out and see what happens. The price is right.