I have been asked a few times about growing cannabis mid-summer, or late in the outdoor season, so wanted to give my experience with it.
First off, can one grow quality cannabis if planted late in the outdoor growing season?

The short answer is…yes, absolutely!
There are a few stipulations however…
First off, the plants you grow need to mature fast enough to finish outdoors in the time they would have before winter comes (depending on where you live of course.) One way to assure this is to plant them in pots, and move to indoor lighting if you need to.
Another way to achieve this is to plant an auto-flower, that is quick to finish such as the Sour 60 strain.
I have grown photo plants outdoors before that I planted near the end of July. These were fast finishing strains from Canadian genetics. The plants finished nicely, but only got about 5 ft tall (they would have gotten much taller if grown the whole summer.)
Photo cannabis plants will generally begin to flower when the dark period reaches the point to allow it, pretty much no matter how big they are. When I grow seeds indoors from photo plants I tend to flip the lights to 12/12 when they plants are only on say their third node, or 3 inches tall. That way they do not get too big indoors.
These plants will end up finishing at about 3 ft tall. And can produce plenty of seeds for you guys.
Growing for sinsemilla will work the same way.
So, if the first frost where you would grow is say mid October, I would not hesitate to grow quick maturing plants, planted as late as the end of July….giving them 2 1/2 months to finish. And grow in pots if possible, so you can move them indoors if necessary.
Good info.! I just moved to the Searles Valley, CA in the Mojave desert. This will be interesting I just started some mystery seeds you said were female and autos. So this should be fun.
Keep in touch and let me know how it goes. I have found cannabis able to thrive in very hot dry conditions. with hydration being key. (gets well over 100 here for a few weeks) In that kind of environment I will water pretty much every day.