DAYS 1-5 (MARCH 16-20)
As the sun came up this morning, it was visible in a good portion of southern NH and eastern MA, as well as RI and eastern CT, partially visible in portions of central MA and southwestern NH where there are cloud patches, and mostly hidden behind a blanket of clouds across Cape Cod and the MA South Coast. During the day today we’ll see a mix of sun and clouds, but the clouds will probably end up being more dominant with time. A few of them can build enough for a brief sprinkle of rain, especially in the I-95 belt, during this afternoon, but for the most part it will be a dry day as weak high pressure controls the weather. While everybody starts out fairly chilly, inland areas will warm more efficiently today, even with interruptions in the sunshine, as a cooler sea breeze will develop along the coastline. Tonight, a southerly air flow takes over ahead of an approaching cold front. This will drive more low level moisture into the region and while a deck of high and middle clouds advances eastward into the region, we’ll see lower clouds also move in from the south. Even some fog can roll into the South Coast region. Rain showers associated with the approaching cold front can be here before dawn, especially west of I-95. On Sunday, St. Patrick’s Day, we’ll see a band of rain showers sweep eastward across the region with the cold front during the morning, and exit the coastline, Cape Cod lastly, by midday. A morning that has a moist southerly wind will be replaced by a drier, gusty westerly wind and a sun/cloud mix from midday onward. However, it will be fairly mild as the arrival of cold air will wait until a secondary trough passes by Sunday night or early Monday. Monday through Wednesday will feature near to below normal temperatures and gusty winds, with varying amounts of clouds. There is a minimal chance of passing light showers of rain, graupel, or wet snow Monday and/or Tuesday in response to cold air aloft, and a slightly better chance of a shower of rain/mix on Wednesday as a more vigorous trough passes through the region. We welcome spring with the vernal equinox at 11:06 p.m. EDT Tuesday (March 19).
TODAY: Sun/cloud mix. A possible brief light rain shower I-95 belt afternoon. Highs 46-53. Wind NW to variable up to 10 MPH with coastal sea breezes developing midday on.
TONIGHT: Mostly cloudy. Areas of fog mainly South Coast late. Pre-dawn rain showers possible west of I-95. Lows 35-42 evening, rising slowly overnight. Wind variable up to 10 MPH evening, then S increasing to 5-15 MPH with gusts around 20 MPH overnight.
SUNDAY: Cloudy through mid morning with rain showers likely west to east. Cloud/sun mix late morning on with a slight chance of a passing rain shower in the afternoon. Highs 48-55 South Coast, 55-62 elsewhere. Wind S 10-20 MPH, shifting to W from west to east, with gusts up to 30 MPH.
SUNDAY NIGHT: Partly cloudy. Lows 26-33. Wind NW 10-20 MPH.
MONDAY: Partly sunny. A passing brief rain/graupel/snow shower possible. Highs 38-45. Wind NW 10-20 MPH, higher gusts.
MONDAY NIGHT: Variably cloudy. Lows 28-35. Wind NW 10-20 MPH.
TUESDAY: Variably cloudy. A passing brief rain/graupel/snow shower possible. Highs 38-45. Wind NW 10-20 MPH, higher gusts.
TUESDAY NIGHT: Partly cloudy. Lows 27-34. Wind NW 10-20 MPH.
WEDNESDAY: Variably cloudy. A passing rain/mix shower or two likely. Highs 40-47. Wind W 10-20 MPH.
DAYS 6-10 (MARCH 21-25)
Generally fair March 21-22. Storm signal for March 23-24 weekend with rain/mix/snow potential. Unsettled weather may linger late period. Temperatures near to below normal.
DAYS 11-15 (MARCH 26-30)
Additional unsettled weather threats and variable temperatures in an active early spring weather pattern for late March.