It looks like greater Hartford to Western Mass and extending through to central Massachusetts are all slated for somewhere between 4 and 8 inches of snow starting late in the day Sunday (around 4pm) and extending through the morning drive on Monday. The storm may start a little bit earlier --probably 4pm Sunday-- in the Berkshires.
Still left unresolved -- even at this late hour is exactly where any rain -snow line is going to develop. The storm is off the coast, so anything is really possible.
The latest forecast from the National Weather Service:
Sunday
A mix of clouds and sun during the morning will give way to cloudy
skies this afternoon. High 42F.
Sunday Night
Snow likely. Low near 30F. Winds N at 5 to 10 mph. Chance of snow
100%. Snow accumulating 5 to 8 inches.
Monday
Cloudy skies early, followed by partial clearing. High 39F.
Monday Night
A mostly clear sky. Colder. Low 11F. Winds WNW at 10 to 15 mph.
Tuesday
Generally sunny despite a few afternoon clouds. High 31F. Winds WSW
at 10 to 15 mph.
(Forecast Map provided by MEMA/National Weather Service)