I don't think these colder trends will be enough to cool he layer above 850 enough to change the precipitation type for most S of I-90. Those closer to the NH border it may.
Try and follow along here. The slp was weaker then the 00z run by a few mb thru most of the time up to the storm. And the only real noticable changes on wintry output was N of the MA border up in CNE.