MA Weather: When, How Much Snow Falls Overnight

A winter weather advisory has been called for much of Southern New England as forecasters warn of several inches of snow mucking up the Wednesday morning commute. Up to 3-4 inches of snow could fall in Massachusetts, with the highest totals in Southeastern Mass.

The snow is expected to start overnight and continue into the morning commute. It's unknown if it will be enough to cause any school delays or cancellations. Subscribe to your local Patch for the latest school and storm-related information.

In the "only in New England" department, that snow will follow near-record high temperatures. Tuesday will be unseasonably mild, inching toward 60 degrees in some areas.

Rain will show up Tuesday afternoon and eventually turn to snow as the temperatures sharply dip into the low 30s late Wednesday night. Expect the snow to start in the overnight hours and leave between 10 a.m.-noon.

The winter weather advisory is in effect for south of Boston from 10 p.m. Wednesday to noon Thursday. The National Weather Service said to plan for slippery roads on the morning commute, when snow may still be "falling moderate to heavily" in the area.

Boston-area forecast via NWS

Today - Rain, mainly after noon. Patchy fog after 3pm. High near 62. Southwest wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

Tonight - Rain likely before midnight, then snow and sleet between midnight and 2am, then snow after 2am. Patchy fog after midnight. Low around 30. West wind 5 to 8 mph. Chance of precipitation is 80%. New snow and sleet accumulation of 1 to 2 inches possible.

Wednesday - Snow, mainly before 11am. Patchy fog before noon. High near 33. Northwest wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Wednesday Night - Mostly cloudy, then gradually becoming clear, with a low around 21. Southwest wind 5 to 10 mph becoming northwest after midnight.

Thursday - Sunny, with a high near 29. Northwest wind 5 to 9 mph.

Thursday Night - Partly cloudy, with a low around 18. Calm wind.

Friday - A chance of rain after 1pm. Partly sunny, with a high near 39. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 40%.

Friday Night - Rain and snow likely before 9pm, then rain. Patchy fog before 3am, then patchy fog after 4am. Low around 35. East wind 5 to 7 mph. Chance of precipitation is 80%.

Saturday - Rain, mainly before 10am. Patchy fog before 7am. High near 52. East wind 6 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 80%.

Saturday Night - A chance of rain before midnight. Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 38. Southwest wind around 6 mph. Chance of precipitation is 30%.

Sunday - Patchy fog. Otherwise, mostly cloudy, with a high near 47. West wind 6 to 9 mph.

Sunday Night - Partly cloudy, with a low around 30. West wind around 9 mph.

Monday - Sunny, with a high near 39. West wind around 9 mph.