Volunteer Tomatillos

I brought in the trash cans after our alley pickup and, out of the corner of my eye, spied several green plants thriving along the fence with chartreuse green Chinese lantern seedpods. Upon closer examination, it appeared to be tomatillos and, after checking Wikipedia and contacting a friend whose a master gardener, they were determined to be volunteer tomatillos. Now the question is how well will the fruit develop between now and the first inner-city frost.