Expect another very cold start Friday morning as the mercury dips to the single digits once again. Gusty winds will continue to persist early in the day, with the wind chill dropping to 5 to 10 below zero through mid morning. High pressure will begin to slide offshore Friday and winds will begin to relax, especially during the afternoon. High temperatures rebound to the low 20s. After a mostly sunny start we can expect clouds to be on the increase in the afternoon.
The increase in clouds will be the forerunner of a low pressure system. The system will likely track well southeast of Nantucket and only give southern New England a glancing blow, with the south coast of Massachusetts and Cape Cod and the islands once again having the possibility for some light accumulating snow. Locally, there is about a 50% chance of a touch of light snow Friday night, otherwise it will be mostly cloudy into Saturday. Lows Friday night will not be as cold, falling to the low teens inland to 15 degrees on the coast. Highs on Saturday rebound to the mid 20s, which is still much below normal. Any snow that we may get should only add up to a coating, with southern Essex and southeast Middlesex Counties having the better chance for this. The Merrimack Valley has a better chance of just having a few snow showers or flurries, if that.
Decreasing amounts of clouds will bring us a partly cloudy Saturday night. With the departing storm out over the Atlantic Ocean another shot of colder air will follow in its wake. Lows Saturday night will dip to around 7 through the interior to 12 on the coast. Under a mostly sunny sky the highs on Sunday top out in the mid 20s, with Sunday night lows 10 inland sections to 15 along the coast.
There are signs of a moderating trend early next week as the mercury climbs to near normal or a bit above normal readings for Monday and Tuesday. With the milder temperatures come more clouds and the chance for a period of unsettled weather later Monday or Tuesday. Expect generally mostly cloudy skies early in the week, with a chance of snow showers Monday night that will probably mix with and change to rain showers Tuesday. Highs range from 35 to 40, mildest on the coast. The overnight lows range from the low 20s inland to mid and upper 20s closer to the shore during Monday night. Lows Tuesday night near 30 degrees.