Growing season may be largely done, but we will continue issuing for those zones until 10/21. I forget what we decided on, but it's something like a week or two weeks past the median first freeze date.
When I issued those advisories last night it was still a little early to be super confident in low temps so I left them out. Interior Rockingham can radiate, but MHT/ASH corridor and PSM don't really do great on these kinds of nights. ASH can go a few degrees colder than MHT though.