10:21AM

DAYS 1-5 (FEBRUARY 24-28)
The final 5 days of February will see the end of a string of progressive low pressure systems as the final one moves through on Sunday. It will not be a major storm but will present a complex precipitation pattern as we have cold air being replaced by milder air both at the surface and aloft, at varying times – not an atypical set-up for this time of year by any stretch. Will detail it below. Behind this system will come 3 tranquil days to end the month as high pressure approaches from the west Monday, moves overhead Tuesday, then drifts off to the east Wednesday. Forecast details…
TODAY: Increasing clouds. Mid to late afternoon light rain possible mainly South Coast. Highs 50-58. Wind W 5-15 MPH with higher gusts.
TONIGHT: Mostly cloudy evening with a brief period of very light rain possible along the South Coast. Cloudy overnight with a slight chance of light snow / sleet southern NH and northern MA and a slight chance of sleet / rain southern MA through RI and eastern CT. Lows 30-38. Wind N under 10 MPH.
SUNDAY: Overcast. Snow/sleet southern NH and northern MA transitioning to mostly sleet then rain by afternoon with pockets of freezing rain possible in elevated valleys of north central MA and southwestern NH, and snow/sleet accumulation of a coating to 1 1/2 inch before rain. Rain/sleet southern MA / RI / CT quickly transitioning to rain. Highs 32-38 southern NH and northern MA with coldest in elevated valleys, 38-45 southern MA / RI / CT.
SUNDAY NIGHT: Cloudy evening with areas of fog and any rain ending early. Clearing overnight. Areas of black ice. Lows 28-35. Wind light N.
MONDAY: Sunny to partly cloudy. Highs 48-55. Wind NW 5-15 MPH.
TUESDAY: Mostly sunny. Lows from the upper 20s to middle 30s. Highs from the middle 40s to lower 50s.
WEDNESDAY: Partly sunny. Lows from the middle 20s to lower 30s. Highs from the upper 40s to middle 50s.

DAYS 6-10 (MARCH 1-5)
March will begin with the evolution of a blocking pattern as high pressure builds in Greenland and eastern Canada and forces low pressure to its south from New England and the Mid Atlantic States into the western Atlantic. For southern New England, the evolution should result in a storm of mainly rain to start transitioning to mix/snow as it exits, this taking place during the March 1-2 time frame. After this a very broad low pressure system should result, centered well offshore, but close enough that this area is in its circulation and marginally involved in its unsettled weather during the remainder of the period, though enough dry air will be in place during this time for more “dry” than “not dry”, assuming it evolves as expected. Will continue to monitor.

DAYS 11-15 (MARCH 6-10)
The same general pattern is expected, blocking, with another system doing something somewhat similar to the first one, during this period. Too soon for any details.

9:44AM

DAYS 1-5 (FEBRUARY 23-27)
As we head into the final days of February we will transition from an active pattern with low pressure systems having just departed with yesterday’s rain/sleet/snow to 2 more coming with rain and some mix later today and again Sunday to a quieter pattern early next week as the atmosphere gets ready for a larger scale change… No big changes regarding the upcoming systems from yesterday’s discussion. Will watch the cold air for possible snow/sleet in some interior locations for both of these, but neither will turn out as widespread frozen precipitation situations. At the moment I only think freezing rain could be briefly an issue in some of the valley locations of far north central MA and southwestern NH tonight and again early Sunday, but this should be very limited. Forecast details…
TODAY: Some morning sun then clouding over. Late-day rain except possibly sleet/snow parts of central and northeastern MA to southern NH but no accumulation. Highs 37-44. Wind light NE to SE.
TONIGHT: Cloudy. Rain except a couple areas of freezing rain in valleys north central MA to southwestern NH, tapering off late evening. Lows 30-37. Wind light SE to S.
SATURDAY: Partly sunny. Highs 48-55. Wind light SW to NW.
SUNDAY: Overcast with rain except possible mix north central MA to southern NH to start. Lows from the lower to middle 30s. Highs from the upper 30s to middle 40s, mildest South Coast.
MONDAY: Partly to mostly sunny. Lows in the 30s. Highs from the middle 40s to lower 50s.
TUESDAY: Partly to mostly sunny. Lows from the middle 20s to lower 30s. Highs from the middle 40s to lower 50s.

DAYS 6-10 (FEBRUARY 28-MARCH 4)
February ends quietly with fair weather on its last day. The early days of March see a change in the large scale pattern as a block develops in the atmosphere, but this block may be strong enough so that after an initial rain/mix/snow event on March 1 a larger storm will evolve well offshore to the southeast of New England for a couple days, keeping the region dry or with just a few rain/snow showers, breezy conditions, and rough surf along the coast, and then we’ll have to monitor for a backing-up of this system late in the period for more direct impact. These patterns can evolve in a complex manner so confidence is not high at this point.

DAYS 11-15 (MARCH 5-9)
The pattern that evolves to start the month should continue during this period bringing cool but not super cold weather and a fairly high risk of unsettled weather.

9:03AM

DAYS 1-5 (FEBRUARY 22-26)
The front is to the south now, the spring/summer preview is over, and we return to weather a little more seasonable, and part of that includes a period of precipitation today as a wave of low pressure slides along the front just to the south. This will start out as rain for many, possibly sleet/snow in southern NH and far northern MA, and then the transition will be to bring the sleet/snow area further south, but by the time it would reach the South Coast region the precipitation should be set to move out and only a rain/sleet mix would occur there. Elsewhere, where sleet/snow occurs for a longer time, there will probably be a minor accumulation. This is gone tonight, and as the boundary sits to the south the next disturbance will come along and bring another round of precipitation late Friday and Friday night. It should be cold enough to support a little sleet/snow favoring central MA and southern NH followed by a transition to rain, with a mix to rain or just rain elsewhere, although we’ll have to keep an eye on surface temperatures over the interior typical cold spots for the possibility of freezing rain. A larger area of low pressure follows this into southeastern Canada but its sweeping occluded front will spawn a new low to track just south of or over the region Sunday and Sunday night, and this will bring yet another round of precipitation that may be similar to the one late Friday, again watching similar areas for some snow/sleet/freezing rain, though rain should be dominant in most of the region. This one-two-three unsettled episode then comes to an end as high pressure moves in during Monday. Forecast details…
TODAY: Cloudy. Precipitation develops west to east midday and early afternoon as snow/sleet/rain north and rain south, then transitions to sleet then snow southward but only mixing with sleet South Coast. Temperatures fall slowly through the 30s. Wind light NE.
TONIGHT: Cloudy evening with snow except rain/sleet South Coast region, ending early, with accumulation of a coating to 1 inch away from the South Coast except possibly up to 2 inches in higher elevations of central MA and southern NH. Mostly cloudy overnight. Untreated surfaces will be icy. Lows 25-32. Wind light NE to N.
FRIDAY: Mostly cloudy. Late-day rain except possibly sleet/snow parts of central and northeastern MA to southern NH but no significant accumulation. Highs 35-42. Wind light NE to SE.
FRIDAY NIGHT: Cloudy. Rain except areas of freezing rain, sleet, snow possible central and northeastern MA to southern NH, tapering off late evening. Lows 30-37. Wind light SE to S.
SATURDAY: Partly sunny. Highs 48-55. Wind light SW to NW.
SUNDAY: Overcast with rain except possible mix north central MA to southern NH. Lows from the lower to middle 30s. Highs from the upper 30s to middle 40s, mildest South Coast.
MONDAY: Partly to mostly sunny. Lows in the 30s. Highs in the 40s.

DAYS 6-10 (FEBRUARY 27-MARCH 3)
A weakening low pressure area may bring a few clouds February 27 but no precipitation expected at this time. High pressure dominates with fair weather February 28. Low pressure brings the chance of rain/mix/snow March 1 before a drying but windy/colder trend takes over March 2-3.

DAYS 11-15 (MARCH 4-8)
Large scale pattern will feature a block with high pressure in eastern Canada to Greenland and low pressure near the US East Coast with near to below normal temperatures and episodes of unsettled weather here, which may include some frozen precipitation.

7:25AM

DAYS 1-5 (FEBRUARY 21-25)
An anomalously strong ridge of high pressure will deliver one more very warm day for much of the region with several records likely falling. There was a boundary of cooler air that moved down the coast from northern New England into northeastern MA and southeastern NH, as far southwest as parts of Metro Boston overnight but it should be pushed back the other way today with a generally southwest flow taking over. This flow will keep the South Coast and Cape Cod cooler, as would be expected. But a cold front is on the way and will sweep through the region from northwest to southeast this evening, producing some rain showers, and delivering colder air. As this cold air arrives, the front will slow to a stop just south of New England and a wave of low pressure will bring an area of precipitation to the region Thursday midday and afternoon, which will be in the form of snow and sleet for parts of the region, along with some minor accumulation. This will be the beginning of a stretch of unsettled weather, with additional waves of low pressure following later Friday and again Saturday night into Sunday. These may produce some frozen or freezing precipitation mainly over interior areas, but otherwise will be largely rain producers. Forecast details…
TODAY: Low clouds and fog possible northeastern coastal MA and Seacoast NH early, and may hang along the South Coast of MA/RI/CT all day. Otherwise, partly sunny. Highs 50-59 immediate South Coast, 60-74 elsewhere. Wind SW 5-15 MPH.
TONIGHT: Mostly cloudy. Scattered rain showers evening. Lows 35-42. Wind shifting to NW 10-20 MPH with higher gusts.
THURSDAY: Mostly cloudy. Late morning and afternoon rain southern MA, RI, CT may mix with sleet/snow before ending. Late morning and afternoon sleet/snow central MA to southern NH with a coating to 1 inch possible, perhaps over 1 inch in parts of southern NH. Temperatures steady 35-42 morning, falling to 30-35 afternoon. Wind N 5-15 MPH.
THURSDAY NIGHT: Clearing. Areas of black ice. Lows 20-27. Wind light N.
FRIDAY: Sunshine followed by clouds. Chance of rain which may start as snow/ice at night interior MA/NH. Highs 37-43. Wind light NE to E.
SATURDAY: Mostly cloudy. Chance of rain early. Chance of rain/mix/snow night. Temperatures steady upper 30s to lower 40s then falling slightly.
SUNDAY: Cloudy with rain likely. Lows from the middle 30s to lower 40s. Highs from the upper 30s to middle 40s.

DAYS 6-10 (FEBRUARY 26-MARCH 2)
A colder trend the last few days of the month with what looks like a minor disturbance passing through with rain/snow showers late February 27. As March gets underway briefly milder with rain/mix March 1 then clearing and colder March 2. Timing uncertain so confidence is low.

DAYS 11-15 (MARCH 3-7)
Expecting a blocking pattern with high pressure across eastern Canada and low pressure between the Mid Atlantic and western Atlantic. This pattern will feature generally near to below normal temperatures and occasionally unsettled weather, however the main storminess may be to the south and southeast of New England in this set-up.

2:42AM

DAYS 1-5 (FEBRUARY 20-24)
Into the wedge of warmth we go for 2 days before a cold front slices through the region and puts an end to the spring preview late Wednesday. Cloudiness will prevent most areas from reaching maximum potential temperatures today, though the warmest will occur north and west of Boston, primarily north of I-90 and west of I-95, centered in the Merrimack Valley and southern NH. Temperatures come up a few notches Wednesday just ahead of the cold front, with again cloudiness and ocean-modified air keeping the South Coast and adjacent areas cooler while the warmest air is over the same areas it was today. A few showers may accompany the cold front Wednesday evening, and this front will then come to a halt just south of New England Thursday, allowing a small ripple of low pressure to move along it. Cold air will be draining in all the while and a period of precipitation, possibly in the form of snow/sleet north and rain south, is expected Thursday. This boundary is going to sit to the south with southern New England on the cooler side of it right into the coming weekend too and another round of precipitation, mainly rain that may start as some snow/ice interior, is expected Friday night and early Saturday and another area of most likely rain/mix approaching later Saturday. Forecast details…
TODAY: Mostly cloudy to partly sunny. Highs 47-55 South Coast, 56-64 elsewhere, mildest north central to interior northeastern MA and adjacent southern NH. Wind SW 5-15 MPH.
TONIGHT: Partly cloudy north. Mostly cloudy south. Lows 45-53. Wind SW 5-15 MPH.
WEDNESDAY: Partly sunny north. Mostly cloudy south. Highs 47-56 South Coast, 57-70 elsewhere, warmest valley areas northwest of Boston. Wind SW 10-20 MPH.
WEDNESDAY NIGHT: Mostly cloudy. Scattered rain showers evening. Lows 35-42. Wind shifting to NW 10-20 MPH with higher gusts.
THURSDAY: Mostly cloudy. Chance of rain southern MA, RI, CT. Chance of mix/snow central MA to southern NH. Temperatures steady 35-42 morning, falling to 30-35 afternoon. Wind N 5-15 MPH.
FRIDAY: Sunshine followed by clouds. Chance of rain which may start as snow/ice at night. Lows from the upper 20s to lower 30s. Highs from the upper 30s to lower 40s.
SATURDAY: Mostly cloudy. Chance of rain early. Chance of rain/mix/snow night. Temperatures stead upper 30s to lower 40s then falling slightly.

DAYS 6-10 (FEBRUARY 25-MARCH 1)
A broad low pressure area brings a chance of rain/ice/snow February 25. Will watch the period February 26-28 for an additional disturbance moving through from northwest to east that may produce additional rain/mix/snow. Dry weather follows. Temperatures trend colder.

DAYS 11-15 (MARCH 2-6)
Expecting a blocking pattern with high pressure across eastern Canada and low pressure between the Mid Atlantic and western Atlantic. This pattern will feature generally near to below normal temperatures and occasionally unsettled weather, however the main storminess may be to the south and southeast of New England in this set-up.

2:25AM

DAYS 1-5 (FEBRUARY 19-23)
A warm front approaches today and passes tonight, opening the door to very mild weather Tuesday through the daylight hours of Wednesday. A cold front will push through the region from northwest to southeast Wednesday night and a cooler high pressure area will push toward the region from the north Thursday, although the front may hang up just south of the region with a wave of low pressure moving along it, possibly close enough to delay clearing. This frontal boundary will start moving back to the north a little bit on Friday and a wave of low pressure will approach from the west with a return to unsettled weather possible by late in the day or at night. Forecast details…
TODAY: Increasing clouds. Risk of light rain mainly west and north of Boston late day. Highs 43-50. Wind light SE.
TONIGHT: Mostly cloudy. A few periods of rain evening. Temperatures steady 43-50 then rising slightly overnight. Wind light S to SW.
TUESDAY: Partly sunny. Highs 47-55 South Coast, 56-64 elsewhere. Wind SW 5-15 MPH.
TUESDAY NIGHT: Partly cloudy. Lows 45-53. Wind SW 5-15 MPH.
WEDNESDAY: Partly sunny. Chance of rain showers evening or night. Highs 47-56 South Coast, 57-70 elsewhere, warmest valley areas northwest of Boston. Much cooler at night. Wind SW 10-20 MPH, shifting to NW at night.
THURSDAY: Mostly cloudy with a possible period of rain/mix then clearing late. Temperatures fall through 40s.
FRIDAY: Sunshine followed by clouds. Chance of rain which may start as snow/ice at night. Lows from the upper 20s to lower 30s. Highs from the upper 30s to lower 40s.

DAYS 6-10 (FEBRUARY 24-28)
Unsettled weather possible during the February 24-25 weekend with a nearby boundary and areas of low pressure moving along it. Colder air from the north will probably win out with some threat of snow/ice/rain during this time. Another system may bring some light precipitation about February 27 but uncertain as this system may get pulled apart and end up much weaker or south of the region.

DAYS 11-15 (MARCH 1-5)
The early March pattern should be unsettled and cooler than normal as a blocking pattern sets up. Will eye the possibility of a couple storm systems, especially one later in the period.

11:22AM

STORM SUMMARY
I would love to say the forecast for the storm worked out well, and I suppose it did, in general. But there was a big miss, and that was north central MA and southern NH which got in on the heaviest of the snow that I actually thought would have fallen further south. The expansion of the precipitation area was greater than I expected, and some hard-to-see banding took place in those areas mentioned above. Looking back, a forecast of 4-8 inches would have been better for a large portion of the region, with 1-4 inches for the South Coast region with mixing/rain involved. All in all, not too bad, but I don’t like to dwell on my performance other than learning from the mistakes, and I have taken some notes for future reference in this regard.

DAYS 1-5 (FEBRUARY 18-22)
As promised, the snow that did fall will not be hanging around and is already in the process of melting. Not that it’s super warm today, only into the 40s, but that higher February sun angle does a number on the snow this time of year that hasn’t had a chance to go through a melt/freeze process. And we’re only going to see a little bit of that as we drop below freezing tonight, but tomorrow, despite losing the sunshine to an approaching warm front which eventually brings some rain, the temperature will be climbing far above freezing accelerating and nearly completing the melting process. And whatever should survive tomorrow will certainly be eradicated Tuesday as we see an even bigger temperature spike, which will peak on Wednesday as a high pressure ridge builds along the East Coast and a cold front hangs back to the north. This front will arrive by early Thursday and high pressure behind it will send a much cooler air mass into the region, ending the spring preview. Forecast details…
TODAY: Sun and passing clouds. Highs 40-47. Wind NW 5-15 MPH with higher gusts, diminishing late in the day.
TONIGHT: Mostly clear. Lows 18-23 interior, 24-29 coast. Wind light variable.
MONDAY: Increasing cloudiness. Highs 43-50. Wind light SE.
MONDAY NIGHT: Cloudy with a period of rain. Lows 40-47. Wind light S.
TUESDAY: Partly sunny. Highs 45-52 immediate South Coast ranging to 60-67 interior areas with a small 52-60 area in between. Wind S to SW 5-15 MPH.
WEDNESDAY: Partly sunny. Lows from the lower 40s to around 50. Highs from the upper 40s to middle 50s immediate South Coast, middle 50s to lower 60s just away from the coast, middle 60s to lower 70s interior.
THURSDAY: Mostly cloudy. Chance of a period of rain morning-midday which may end as a mix. Temperatures fall through 50s and 40s to upper 30s.

DAYS 6-10 (FEBRUARY 23-27)
Hard to time precipitation threats in what will be an active pattern but looking at the most likely days for them being during the February 24-25 weekend, and February 27. The first may start with freezing or frozen precipitation but will likely end up mainly rain. The second can be any type of precipitation and confidence is too low to be sure this far in advance.

DAYS 11-15 (FEBRUARY 28-MARCH 4)
Evolution of the pattern is to below normal temperatures and will have to watch for some additional storminess. Leaning toward a blocking pattern.

1:11AM

DAYS 1-5 (FEBRUARY 17-21)
High pressure dominates today with seasonably cold but dry weather, but it slides offshore and a wave of low pressure moves east northeastward very rapidly along the boundary of warm and cold air to the south of New England bringing a light to moderate snowfall tonight, which will exit by Sunday morning. Another high pressure area moves in Sunday returning sunshine to the region. This high is not of very cold origin and therefore it will be fairly mild and much of the snow that falls during Saturday night will melt during Sunday. A warm front will approach Monday with a late-day or nighttime rain risk, and then anomalous warmth will arrive Tuesday into Wednesday as high pressure builds over the southeastern US and a southwesterly air flow takes over. We’ll have to watch a cold front to the north during Wednesday as this will mark the end of that significant warm-up, but it remains to be seen if it will arrive during or after Wednesday.
TODAY: Sunshine followed by increasing cloudiness. Highs 30-37. Wind light variable.
TONIGHT: Overcast. Snow arrives southwest to northeast mid to late evening, peaks overnight, and tapers off southwest to northeast around dawn, possibly mixing with or briefly changing to rain immediate South Coast, Cape Cod and Islands. Snow accumulation of 3-6 inches expected in most areas, except 1-3 inches in southwestern NH and nearby north central MA, and 1-3 inches of wetter snow Cape Cod and Islands. A couple small areas of bands of 6 or 7 inches are possible favoring interior southeastern MA, possibly Cape Ann MA, northern RI, and northeastern CT. Lows 24-31 but to the middle 30s Cape Cod overnight. Wind S shifting to E 5-15 MPH.
SUNDAY: Clouds Cape Cod early otherwise mostly sunny. Highs 38-45. Wind N 10-20 MPH early shifting to W and diminishing to around 10 MPH.
SUNDAY NIGHT: Clear. Lows 20-27. Wind light N.
MONDAY: Increasing clouds. Chance of rain late. Highs 40-47. Wind light SE.
TUESDAY: Partly sunny. Lows in the 40s. Highs from the 50s south-facing shores to 60s elsewhere.
WEDNESDAY: Partly sunny. Lows from the middle 40s to lower 50s. Highs from the middle 50s south-facing shores to 60s to near 70 interior. May turn sharply cooler north to south late day or evening.

DAYS 6-10 (FEBRUARY 22-26)
May start unsettled then dry out as it cools February 22. Will have to watch the February 23-26 period for 1 or 2 threats of unsettled weather that may include frozen or freezing precipitation for parts of the region. This will be caused by a pattern that remains warm in the US Southeast but much colder in Canada placing New England in the battle zone between the two.

DAYS 11-15 (FEBRUARY 27-MARCH 3)
Similar pattern, near a boundary with the cooler to colder side probably winning out, and episodes of unsettled weather which may include some frozen precipitation. During this time we will be watching the large scale pattern for a possible transition to a blocking set-up.

9:28AM

DAYS 1-5 (FEBRUARY 16-20)
2 cold fronts will push through the region, one this morning, and one this evening. Areas of rain showers will be around ahead of and along the first front, and a rain or snow shower may accompany the second one in a few locations. The second front will mark the arrival of modified arctic air which will become established through Saturday, setting the stage for a winter precipitation event Saturday night as a developing wave of low pressure exits the northern Mid Atlantic and passes just south of New England. This will be a quick event with light to borderline moderate snowfall amounts and the chance of some rain near the South Coast, and will be out of here by early Sunday. A warm-up will follow this as a ridge of high pressure builds across the southeastern US through early next week. A surface warm front has to come through here later Monday and this may be accompanied by cloudiness and some rainfall, but by Tuesday we should see a preview of spring.
Forecast details…
TODAY: Mostly cloudy. Scattered to numerous rain showers and areas of fog morning. Isolated late-day rain showers except rain or snow showers southern NH and far northern MA. Highs 45-52 in the morning, cooling through the 40s afternoon. Wind W 5-15 MPH morning, NW 10-20 MPH afternoon.
TONIGHT: Clearing. Lows 13-20. Wind NW 5-15 MPH.
SATURDAY: Sunshine followed by increasing cloudiness. Highs 28-35. Wind light variable.
SATURDAY NIGHT: Overcast. Snow arrives southwest to northeast late evening, peaks overnight, and tapers off southwest to northeast around dawn, except mixing with or changing to rain along the immediate South Coast. Snow accumulation of 2-5 inches expected in most areas, except 1-3 inches in southwestern NH and nearby north central MA, and 1-2 inches of wetter snow MA South Shore through South Coast and less than 1 inch Nantucket. Lows 24-31 but rising to 32-38 South Shore of MA and South Coast. Wind S shifting to E 5-15 MPH.
SUNDAY: Mostly cloudy with a risk of lingering snow except mix/rain South Coast early, then a sun/cloud mix. Highs 38-45. Wind N 10-20 MPH early shifting to W and diminishing to around 10 MPH.
MONDAY: Increasing clouds. Chance of rain late. Lows in the 20s. Highs in the 40s.
TUESDAY: Partly sunny. Chance of rain showers late. Lows in the 40s. Highs from the middle 50s to lower 60s.

DAYS 6-10 (FEBRUARY 21-25)
Upper air pattern supports warmth but surface pattern may send a cold front southward to cut off what would otherwise by an anomalously warm day February 21. Will keep an eye on it. Episodes of unsettled weather with a cooler to colder trend thereafter. Cannot rule out some mix/snow.

DAYS 11-15 (FEBRUARY 26-MARCH 2)
Similar pattern, near a boundary with the cooler to colder side probably winning out, and episodes of unsettled weather which may include some frozen precipitation.

2:28AM

DAYS 1-5 (FEBRUARY 15-19)
In the warm sector today with enough moisture for a rain shower risk mainly this morning and clouds being dominant for much of the day. Amount of sun determines whether or not anyone reaches 60, including if Boston’s record high of 61 is challenged. Two cold fronts come through Friday, one early preceded by rain, one late accompanied by a rain or snow shower, then much colder air arrives at night through Saturday. Will continue to watch a largely open wave of low pressure coming along and passing south of the region Saturday night and early Sunday. The impact remains in question, but still watching for a threat of a period of snow Saturday night. Odds favor this being a fairly minor event, but moderate amounts remain a scenario on the table so will continue to watch and hold off on solid numbers until next blog, if they become necessary. This system is embedded in an overall mild upper pattern so behind it we’ll observe an immediate moderation in temperature for the remainder of Presidents Day Weekend.
Forecast details…
TODAY: Mostly cloudy to partly sunny. Chance of rain showers early. Highs 45-52 coast, 52-58 interior. Wind light S.
TONIGHT: Mostly cloudy. Rain showers likely late evening on. Lows 43-49. Wind S to SW up to 10 MPH.
FRIDAY: Mostly cloudy with rain showers early, then sun and passing clouds. A brief rain or snow shower possible late-day. Highs 45-52 morning, then cooling through the 40s. Wind SW 5-15 MPH shifting to W and increasing to 10-20 MPH with higher gusts.
FRIDAY NIGHT: Mostly clear. Lows 13-20 Wind NW 5-15 MPH, higher gusts. Wind chill below 10 at times.
SATURDAY: Sun and high clouds day. Cloudy with a chance of snow at night with potential light to moderate accumulation. Highs 31-37. Wind light variable.
SUNDAY: Cloudy with a chance of snow early, then clearing and breezy. Lows in the 20s. Highs from the upper 30s to lower 40s.
MONDAY: Increasing clouds. Lows from the upper 20s to lower 30s. Highs in the 40s.

DAYS 6-10 (FEBRUARY 20-24)
Starting with much above normal temperatures followed by a trend toward more normal by the end of the period. Episodes of unsettled weather possible favoring rain showers through mid period and any type of precipitation later in the period.

DAYS 11-15 (FEBRUARY 25-MARCH 1)
Colder trend. A couple mix/snow events are possible.

8:26AM

DAYS 1-5 (FEBRUARY 14-18)
High pressure moves offshore today and temperatures moderate. A warm front will bring a period of rain to the region late tonight into early Thursday and lead even warmer weather into the region for Thursday. The degree of warmth will be somewhat dependent on how much sun breaks out during the day. For now, leaning toward more dominant cloudiness and temperatures remaining under 60. The last time Boston hit 60 or greater was January 13 when it hit 61, which is also the record high temperature for Thursday set back in 1939. I think that record will stand. Cold front will come through early Friday preceded by a period of rain showers. A second cold front will come through Thursday evening, and may be accompanied by a rain or snow shower, but more notably will usher in a cold air mass for Saturday. This will set the stage for a chance of snow except snow or rain South Coast as a wave of low pressure passes just south of the region Saturday night and early Sunday. Although the details are still being worked out, this system has the potential to bring a light to moderate snowfall to at least a portion of the region during the middle of the weekend before conditions improve and temperatures moderate just behind the system.
Forecast details…
TODAY: Mostly cloudy through mid morning, then clearing. Highs 45-52. Wind S to SW up to 10 MPH.
TONIGHT: Mostly clear evening, then increasing cloudiness. Lows 32-38. Wind SW under 10 MPH.
THURSDAY: Mostly cloudy to partly sunny. Chance of rain showers early. Highs 53-59. Wind SW 5-15 MPH.
THURSDAY NIGHT: Mostly cloudy. Rain showers likely late evening on. Lows 43-49. Wind SW 5-15 MPH.
FRIDAY: Mostly cloudy with rain showers early, then sun and passing clouds. A brief rain or snow shower possible at night. Highs 45-52 morning, then cooling through the 40s. Wind SW 5-15 MPH shifting to W and increasing to 10-20 MPH with higher gusts.
SATURDAY: Sun and high clouds day. Cloudy with a chance of snow at night. Lows from the middle 10s to lower 20s. Highs in the 30s.
SUNDAY: Cloudy with a chance of snow early, then clearing and breezy. Lows in the 20s. Highs from the upper 30s to lower 40s.

DAYS 6-10 (FEBRUARY 19-23)
After the brief winter interlude of early to mid weekend the Presidents Day holiday on Monday will be milder but with a late-day rain risk. Tuesday-Thursday February 20-22 a frontal boundary will be nearby, dividing very mild air induced by a ridge of high pressure over the southeastern US from colder air banked across Canada. The position of the boundary will determine the details, so for now calling for the mild air to win at first, then the colder air, with episodes of unsettled weather. Drier/colder by the end of the period if things trend the way they are expected to.

DAYS 11-15 (FEBRUARY 24-28)
The trend looks a little colder but there will still be somewhat of a battled between cold north and mild south. Additional unsettled weather including the possible threat of a winter weather event during the final days of the month.

8:12AM

DAYS 1-5 (FEBRUARY 13-17)
High pressure moves overhead today, with fair and seasonably chilly weather, then offshore Wednesday. A midweek warmup will start with dry weather on Wednesday but then a batch of wet weather will come through early Thursday with a warm front. A cold front will follow this on Friday with additional unsettled weather. The warm-up peaks Thursday and ends Friday. Saturday’s weather will resemble today’s as a cold high pressure area from Canada moves in.
Forecast details…
TODAY: Mostly sunny through mid afternoon then increasing clouds late. Highs 30-37. Wind N 5-15 MPH becoming light variable.
TONIGHT: Variably cloudy. Lows 23-30. Wind light variable becoming S up to 10 MPH.
WEDNESDAY: Partly sunny. Highs from the 43-50. Wind SW 5-15 MPH, higher gusts.
WEDNESDAY NIGHT: Mostly cloudy. Rain showers likely overnight. Lows 38-45 early then slowly rising. Wind SW 5-15 MPH.
THURSDAY: Variably cloudy. Chance of rain showers early. Highs 53-60. Wind SW 10-20 MPH.
FRIDAY: Mostly cloudy with rain showers likely morning. Partly cloudy and windy afternoon. Temperatures fall through the 40s.
SATURDAY: Mostly sunny. Lows from the upper 10s to middle 20s. Highs in the 30s.

DAYS 6-10 (FEBRUARY 18-22)
Large scale pattern: Stronger high pressure ridge US Southeast, cold air in Canada. Temperatures which start chilly at the very start of the period then moderate and end up above normal, but how far above normal is the question. The other question is, do we end the cold shot with a period of accumulating snow in the early hours of Sunday February 18? There is enough evidence on fairly reliable guidance to make me say we need to closely watch this possibility. Weather in the February 20-22 period can range from fair and very mild to overcast and damp. Will just have to see where the boundary ends up and fine-tune going forward.

DAYS 11-15 (FEBRUARY 23-27)
For this period not expecting any major changes, so the confidence level for any strong trend is not high at this time. Leaning mild, and completely unsure of storminess. A puzzle yet to solve.

8:54AM

DAYS 1-5 (FEBRUARY 12-16)
A cold front has moved offshore but moisture riding up the back side of this front is keeping some cloudiness over the region and some rain shower activity near the South Coast to start the day. A drying trend will eliminate the showers and eventually the cloudiness later today. High pressure moves across the region Tuesday with fair and seasonably chilly weather. The high will move offshore Wednesday allowing a warm up but also more cloudiness in response to warming of the air above us as well. We’ll be fully in the warm sector by Thursday but a disturbance will bring rain showers to start the day. Another cold front will move through on Friday, sending temperatures downward again. Forecast details…
TODAY: Mostly cloudy morning including some rain showers near the South Coast. Clearing afternoon. Highs 38-45 central and northeastern MA through southern NH, 45-52 southeastern MA, RI, and eastern CT. Gradually falling temperatures this afternoon. Wind NW 5-15 MPH, higher gusts.
TONIGHT: Mostly clear. Lows 18-25. Wind NW 5-15 MPH.
TUESDAY: Mostly sunny through mid afternoon then increasing clouds late. Highs 30-37. Wind N 5-15 MPH becoming light varaible.
TUESDAY NIGHT: Variably cloudy. Lows 23-30. Wind light variable becoming S up to 10 MPH.
WEDNESDAY: Partly sunny. Highs from the 43-50. Wind SW 5-15 MPH, higher gusts.
THURSDAY: Variably cloudy. Chance of rain showers early. Lows from the upper 30s to lower 40s. Highs in the 50s.
FRIDAY: Mostly cloudy with rain showers likely morning. Partly cloudy and windy afternoon. Temperatures fall through the 40s.

DAYS 6-10 (FEBRUARY 17-21)
Large scale pattern will feature building high pressure over the US Southeast. Brief shot of cold air comes out of Canada as surface high pressure moves in early in the period for fair and colder weather then a moderating trend during the weekend of February 17-18 then returning moisture and low pressure tracking north of the region February 19 (Presidents Day) may bring some rain showers to the region. Current thinking is fair but very mild weather later in the period as colder air is stuck up in Canada due to the Southeast ridge.

DAYS 11-15 (FEBRUARY 22-26)
Some up and down temps but the overall pattern should be milder than average with no major storminess as it looks now, as a result of the Southeast ridge being strong enough to keep colder air in Canada from becoming dominant.

12:09PM

DAYS 1-5 (FEBRUARY 11-15)
A frontal boundary sits over southern New England allowing a couple waves of low pressure to move up along it today, resulting in wet weather. Enough cold air has been trapped in the valleys of southwestern NH and nearby north central MA for pockets of freezing rain. The final wave will pull the front north slightly and allow a wedge of warmth into southeastern areas later today and early this evening before it passes and pulls the front eastward as a cold front overnight. The weather will try to get a little dramatic with a significant temperature rise and then a band of heavier showers and possible thunderstorms accompanying the final frontal passage. After this, it settles down overnight and the first couple days of the week will be on the quiet, cooler side as high pressure builds across the Great Lakes Monday then into New England Tuesday. This high will slip offshore by the middle of the week when we begin to turn milder but with a little more cloudiness as a couple disturbances move along a frontal boundary to the north of the region. Forecast details…
TODAY: Overcast. Areas of fog. Periods of rain with embedded moderate to heavy showers. Pockets of freezing rain through early afternoon valleys of north central MA and southern NH. Highs 35-43 central MA and southern NH, 44-52 eastern MA and RI occurring late-day. Wind variable 5-15 MPH.
TONIGHT: Cloudy through midnight with frequent rain showers and a risk of thunderstorms, especially RI and southeastern MA. Breaking clouds overnight. Areas of fog. Temperatures rising to 45-52 central MA and southern NH, 52-60 eastern MA and RI evening. Overnight lows 35-42. Wind S 5-15 MPH except 15-25 MPH Cape Cod briefly, shifting to SW and diminishing.
MONDAY: Mostly cloudy morning. Partly cloudy afternoon. Highs 38-45. Wind W 5-15 MPH.
MONDAY NIGHT: Mostly clear. Lows 18-25. Wind NW 5-15 MPH.
TUESDAY: Mostly sunny. Highs 30-37. Wind N 5-15 MPH.
WEDNESDAY: Partly sunny. Lows from the middle to upper 20s. Highs from the middle to upper 40s.
THURSDAY: Variably cloudy. Slight chance of rain showers. Lows from the upper 30s to lower 40s. Highs from the upper 40s to middle 50s.

DAYS 6-10 (FEBRUARY 16-20)
Cold front moves through Friday February 16 with rain to snow showers and turning windy with falling temperatures. Fair and cold Saturday-Sunday February 17-18. Milder with a risk of rain showers Presidents Day Monday February 19, may end as snow showers Tuesday February 20 as colder air returns.

DAYS 11-15 (FEBRUARY 21-25)
Some up and down temps but the overall pattern should be milder than average with no major storminess as it looks now, as a result of the Southeast ridge being strong enough to keep colder air in Canada from becoming dominant.

7:44AM

DAYS 1-5 (FEBRUARY 10-14)
A warm front passed by overnight, has become stationary to the north of the region, and will sink back to the south as a cold front through Sunday while a couple waves of low pressure move up along it, resulting in a rainy Saturday night and Sunday. High pressure moves in Monday into early Tuesday with dry weather. A disturbance will bring a risk of some light snow/mix Tuesday night, possibly causing slippery ground for your last minute Mardi Gras celebrations, followed by fair but milder weather for Wednesday, which is also Valentine’s Day for those who have fun with that and Ash Wednesday for those who observe Lent. But no matter what you observe, read on to observe forecast details…
TODAY: Cloudy. Isolated to scattered rain showers. Highs 45-52. Wind S under 10 MPH.
TONIGHT: Cloudy. Periods of rain. Lows 38-45. Wind S under 10 MPH.
SUNDAY: Cloudy. Periods of rain, some possibly heavy. Highs 40-47. Wind variable under 10 MPH.
SUNDAY NIGHT: Cloudy. Rain ending. Areas of fog. Lows 35-42. Wind variable to W under 10 MPH.
MONDAY: Mostly cloudy morning. Partly cloudy afternoon. Highs 40-47. Wind W 5-15 MPH, higher gusts.
TUESDAY: Increasing clouds. Chance of light snow/mix at night. Lows in the 20s. Highs in the 30s.
WEDNESDAY: Partly sunny. Lows from the upper 20s to lower 30s. Highs from the middle 40s to lower 50s.

DAYS 6-10 (FEBRUARY 15-19)
Mild February 15 with late-day rain shower and night time snow shower as strong cold front arrives resulting in a windy/colder February 16. Been watching the period around the Presidents Day Weekend for a possible winter weather event but all current indications are for fair/cold start, milder and unsettled finish but no major storminess.

DAYS 11-15 (FEBRUARY 20-24)
A Southeast US ridge and cold Canada pattern will continue but for now giving more weight to the ridge more dominant with no major sustained cold here and only minor precipitation events.