DAYS 1-5 (MARCH 22-26)
A low pressure wave will move across our region today through early Monday including an upper level low pressure area that will take until Monday night to pass through the region. This produces an extended period of unsettled weather. Some light snow / mix has already occurred, especially in northern MA and southern NH during the overnight / early morning, but this has had virtually no impact and is generally gone, leaving us just overcast early this morning. More moisture arrives during midday and afternoon and with a just-warm-enough atmospheric profile, the resultant precipitation will be mainly in the form of rain, though a little wet snow / sleet mixed in cannot be ruled out, especially north of Route 2. The trend will be for this area to move to the south as we get into tonight and Monday morning, but it will take its time, and another little low pressure wave moving the frontal boundary as it sinks southward, combined with incoming colder air, will produce some wet snow and sleet especially north of I-90 while it’s still mainly rain, maybe mixed with wet snowflakes or ice pellets before it all tapers off during the day. This area of frozen precipitation can produce a slushy coating mainly on unpaved surfaces Monday morning but should have no noticeable impact on driving. It’s scattered snow showers from the upper low in the afternoon and evening that can become heavy enough to produce a coating to 1 inch accumulation – not widespread, but in scattered locations. This can have brief impact on driving / walking on untreated surfaces, especially as darkness falls. Keep that in mind if you have late Monday travel plans. High pressure builds in with fair weather for Tuesday. The next system still looks destined to have its low pressure center travel to our north late Wednesday with a quick warm-front / cold-front combo producing a short period of unsettled weather. Brief clearing Thursday is overtaken by clouds as the next low pressure system approaches from the west later on.
TODAY: Cloudy. Any early spotty snow / sleet ends in southern NH then rain arrives west to east midday on, may be mixed with wet snow and sleet at times northern MA and southern NH. Highs 38-45 except 45-52 south of I-90. Wind variable to N 5-15 MPH.
TONIGHT: Cloudy. Periods of rain, some wet snow / sleet possible, favoring areas south of Route 2. Lows 32-39. Wind N to NE 5-15 MPH.
MONDAY: Mostly cloudy. Rain / sleet / snow possible especially Route 2 corridor southward first half of the day. Scattered snow showers favoring areas north of I-90 mid to late afternoon into evening with scattered accumulation of mainly under 1 inch. Highs 38-45. Wind N 10-20 MPH, higher gusts in the afternoon.
MONDAY NIGHT: Clearing. Lows 22-29. Wind N 5-15 MPH,.
TUESDAY: Sunny to partly cloudy. Highs 38-45. Wind NW 5-15 MPH.
TUESDAY NIGHT: Mostly clear. Lows 28-35. Wind variable under 10 MPH.
WEDNESDAY: Increasing clouds. Highs 48-55, cooler Cape Cod. Wind SW 5-15 MPH.
WEDNESDAY NIGHT: Mostly cloudy with rain showers evening. Partly cloudy overnight. Lows 35-42. Wind NW 5-15 MPH.
THURSDAY: Partly to mostly cloudy. Chance of mix / rain showers at night. Highs 47-54. Wind SW 5-15 MPH.
DAYS 6-10 (MARCH 27-31)
Unsettled weather chances early March 27 and again March 29. Some up and down temperatures but overall averaging somewhat below normal.
DAYS 11-15 (APRIL 1-5)
Trend is for up and down temps and a couple unsettled weather chances – typical of early spring. Many details TBD.