DAYS 1-5 (JANUARY 16-20)
Today will be a blustery, cold, but dry mid January day with a westerly air flow between low pressure in Atlantic Canada and high pressure to the southwest of New England. The wind quickly relaxes tonight as the low moves away and high pressure slides east, during which time the next low pressure system moves into the Great Lakes. This broad-reaching system will send some of its moisture our way with two episodes of precipitation Saturday. Milder air means rain at first along and east of I-95 with mix / snow to the west, with a trend for this to trend eastward bringing a change to wet snow into the coastal plain with time, before precipitation moves out Saturday evening. This results in some accumulation over interior areas and maybe a slushy coating of snow closer to the coast, with not much of any snow accumulation in southeastern MA. A second low pressure system will form to our south and slide east of our region Sunday night, sending its snow shield into the region from late Sunday afternoon to late Sunday evening. The greatest chance of accumulating snow from this short-lived event will be over areas that do not see it on Saturday, basically the I-95 belt eastward, favoring southeastern MA and Cape Cod where up to a few inches of snow can occur, with amounts quickly diminishing as you head west. Behind that system, yet another low pressure area heads into the Great Lakes and down the St. Lawrence Valley Monday and Monday night, and this one will drag an arctic cold front through our region with a snow shower / snow squall possibility later Monday, followed by dry but very cold weather across the region for Tuesday.
TODAY: Mostly sunny. Highs 27-34. Wind W 10-20 MPH, gusts around 30 MPH.
TONIGHT: Increasing clouds. Lows 20-27 evening followed by a slow rise overnight. Wind SW 5-15 MPH.
SATURDAY: Mostly cloudy. Periodic light rain eventually mixing with and changing to snow coastal plain, mix to snow inland. Snow accumulation ranging from slushy coatings coastal plain to 1/2 to 2 inches west of I-95 with a few over 2 inch amounts in higher elevations of north central MA and southwestern NH. Highs 32-39 inland and 38-45 coast occurring before midday followed by a gradual temperature fall. Wind S 5-15 MPH shifting to N from west to east.
SATURDAY NIGHT: Decreasing clouds. Lows 23-30. Wind N 5-15 MPH.
SUNDAY: Increasing clouds. Highs 33-40. Wind N 5-15 MPH.
SUNDAY NIGHT: Cloudy. A period of snow mainly I-95 belt eastward with best chance of up to a few inches accumulation over Cape Cod. Lows 22-30. Wind N to NE 5-15 MPH, higher gusts along the coast.
MONDAY: Sun / cloud mix. Chance of late-day or evening snow showers. Highs 25-32. Wind shifting to W 10-20 MPH, higher gusts.
MONDAY NIGHT: Partly cloudy with a chance of snow showers evening, then clear. Lows 10-17. Wind W to NW 10-20 MPH, higher gusts.
TUESDAY: Mostly sunny. Highs 18-25. Wind NW 10-20 MPH, higher gusts.
DAYS 6-10 (JANUARY 21-25)
Dry, cold weather at midweek may be followed by brief light snowfall as it turns a little milder. Watching the end of week for a potential winter storm impact, but low confidence outlook this far in advance.
DAYS 11-15 (JANUARY 26-30)
This period of time continues to feature a leaning toward cold weather and a couple of wintry precipitation chances, with it being too far into the future for any details.