It's very possible to grow weed outdoors.
It's very probable that it will not be as good as weed cared for over the same course of time.
Also take into account that the dark season is coming. Where I am, the natural daylength is 12:30, so we're naturally getting 11:30 of darkness. Soon it will naturally be a 12/12 (day/night) schedule, which is when plants want to "close up shop" for the next season.