Rain & snow will reach parts of western, southern New England by 9 PM tonight and spread northeastward, reaching eastern MA after midnight. Temperatures in many places will stay above freezing though, so the most likely places to find a snow accumulation by morning will be across higher elevations, where in some cases it will get down to freezing or below. I think the HRRR snowfall forecast above looks reasonable, although I think you may see some white ground in more parts of CT, MA, and northwest RI than depicted here. Basically, a coating to an inch or two across northwestern CT, western MA (especially outside of the CT valley), the Worcester hills, northwestern NJ, and interior southeastern NY. I wouldn't be surprised if some of the lower elevations saw a coating too, especially on grassy surfaces. The accumulating precipitation should taper down by about 7-9 AM (a couple hours later in eastern, southern New England) but lots of clouds will linger, along with some spotty, nuisance precipitation and highs in the 40's (50 on parts of Long Island, some 30's northern high elevations).