Thanks to Doug Thomas of Crown Nursery, I'm able to see how the plants are changing as the weather cools up at MacDoel.  This is a picture of Monterey close to the field of my original post.

Total chill between 33 and 45 degrees accumulation to this date Oct 23, 2020: 329 hrs, with 372 + 123 hrs over 60 degrees.

In comparison, chill accumulation in this range by Oct 15 was 267 hours, with 324 + 123 hrs over 60 degrees.

In short, warm temps during the day are diminishing rapidly at the same time that chill hours between 33 and 45 are increasing.  I think we are seeing that here with some change to the aspect of the plants.  This is very good news.