I'm pretty sure by now that the nights have been hard on the Zucchini so I would be surprised if there was anything new there. So, time to put another row to sleep for the year.
You might want to start thinking about covering your beets, carrots, parsnips, and salsify (or just the parsnips and salsify if that's all that's in that row. Cover them at night if the temps are getting below 40 degrees, but be sure to uncover them during the day.
Don't worry about the potatoes. Let them go until frost takes them down. I'm sure it will happen soon enough.
The end is almost here