There are a few things I'm looking to try this year in the last month + to give the outdoor plants a better chance, prevent problems, and maybe extend the season 2-4 weeks. Up here that means Sept 1st to Oct 1st + ??. Anything beyond Oct 1st is sheer luck of the weather. Last year I got to harvest my tester plants Nov 1st, which is highly unusual. It was a late, warm fall.
The first is makeshift umbrellas/domes that I can rather quickly put over the plants to shield them from rain. Maybe if I already have poles in the ground. If I can keep most of the late season rains off of them that could be one help.
One or two of those jet/heat guns that can be pointed at the plants during particularly cold, wet weather, morning frosts......if I can raise the immediate temps around the plants 4, 6 degrees? and I can get them through 25+ degree nights......maybe instead of being forced to harvest October 10th I can squeeze out 2 or 3 more weeks....
A leaf blower. After rains, dew, high humidity, if I can dry them off, create a nice breeze, maybe I can prevent mildew, mold, fungus, bud rot....
All of these things together, if I can get them an extra 2, 3, 4 weeks.......it could make a huge difference in ripeness, when others have harvested Sept 20th, and I stretched to Oct 20th or later, if I could even get a pure sativa to Nov 15th with a bit of luck/help from the weather, it could be a big score.