7:02PM

There is not a whole lot of change between the last blog and this one. So revisiting what was talked about in the previous blog, with a little fine-tuning.

Low pressure will track through the Great Lakes this weekend. Its warm front will provide overrunning for increasing clouds during the day Saturday and then mix/snow breaking out during late afternoon and evening from south to north across the area. Enough cold air will be in place for some accumulating snow to start out, with the least chance over Cape Cod. Warm air will be coming in aloft rather quickly, so expect a change to sleet, rain, and freezing rain fairly quickly. Temperatures should warm enough for sleet going to rain in the coastal plain and across southeastern MA into southern RI, but enough cold air may allow sleet and especially freezing rain to occur for much of the night from northern RI through interior eastern MA into southern NH with the exception of the Seacoast area which will also likely change to plain rain. There is a good chance of some icy conditions impacting travel where temperatures remain cold enough to support freezing rain. By later Saturday night to the early hours of Sunday, enough warm air should be in place in all areas so that the precipitation winds up as plain rain, with pockets of freezing rain holding on longest in north central MA into interior southern NH. The warm front may waver around the region allowing southeastern MA and RI to warm significantly for a period of time. Toward the end of Sunday, the cold front from the low pressure area will sweep eastward into the region with rain showers to start, some possible snow showers at night, and a colder/drier trend getting underway. A stronger northwesterly flow on Monday will transport cold air into southeastern New England along with dry weather. At this time it still appears that a clipper low pressure system will come from south central Canada across the Great Lakes and then across the Northeast later Tuesday through early Wednesday with some risk of snow. It should be fast-moving system and not have time to produce too much snow. This will be monitored. Expect a shot of wind and very cold air, the coldest for the season so far, by the middle of next week.

SOUTHEASTERN NEW ENGLAND FORECAST…
TONIGHT: Mostly clear. Lows 15-20 inland, 20-25 coast. Wind W 5-15 MPH, diminishing late.
SATURDAY: Increasing clouds. Light snow or mix possible by late day southern MA and RI. Highs around 30 interior MA and southern NH, 30s elsewhere. Wind light variable.
SATURDAY NIGHT: Overcast. Mix to rain Cape Cod and Islands, snow to sleet then rain southern RI and east coastal MA, snow to sleet and freezing rain interior MA, northern RI, and southern NH except sleet to rain Seacoast region. Snow accumulation less than 1 inch immediate coastal areas, 1-2 inches from central and northern RI through most of eastern MA, 2-4 inches Merrimack Valley through north central MA into most of southern NH. Temperatures 25-30 interior valleys, 30s elsewhere, rising to around 40 coastal areas at night. Wind NE to N under 10 MPH interior MA and southern NH, NE to E 5-15 MPH increasing to 10-20 MPH elsewhere.
SUNDAY: Mostly cloudy. Rain tapering off early from west to east but occasional rain showers possible during the day. Highs in the 40s northwest of Boston, 50s Boston area southeastward. Wind E to SE 10-20 MPH briefly shifting to S over southeastern MA, then shifting to SW all areas 15-25 MPH with higher gusts during the afternoon.
MONDAY: Mostly sunny and windy. Low 20. High 35.
TUESDAY: Increasing clouds. PM snow. Low 15. High 30.
WEDNESDAY: Mostly cloudy with snow showers AM. Sun and clouds PM. Low 20. High 30.
THURSDAY: Mostly sunny. Low 10. High 15.
FRIDAY: Mostly sunny. Low 5. High 25.

5:39PM

A new year is here, and it is now January. The weather will be behaving in an expected way for the month we have entered, with some cold air and a couple of storms passing through.

First, some cloudiness tonight caused by warming air aloft will keep temperatures from dropping too low, and a little less cold is expected on Friday compared to the last 2 days. It will be a bright day as high pressure continues to have influence on the weather here in southeastern New England. Low pressure moving across the southern US will turn northeastward through the Midwest and head into the Great Lakes by Saturday and Saturday night. Its warm front will provide overrunning for increasing clouds and then mix/snow breaking out during Saturday evening from south to north across the area. Enough cold air will be in place for some accumulating snow to start out, with the least chance over Cape Cod. Warm air will be coming in aloft rather quickly, so expect a change to sleet, rain, and freezing rain fairly quickly. At this time the expectation is that areas from the Boston area northwestward will accumulate 1 to 4 inches of snow, least southeast and most to the northwest, before the changeover. Temperatures should warm enough for sleet going to rain in the coastal plain and across southeastern MA into southern RI, but enough cold air may allow sleet and especially freezing rain to occur for much of the night from northern RI through interior eastern MA into southern NH with the exception of the Seacoast area which will also likely change to plain rain. There is a good chance of some icy conditions impacting travel where temperatures remain cold enough to support freezing rain. By later Sunday morning to midday Sunday, enough warm air should be in place in all areas so that the precipitation winds up as plain rain. Toward the end of Sunday, the cold front from the low pressure area will sweep eastward into the region with rain showers to start, some possible snow showers at night, and a colder/drier trend getting underway. A stronger northwesterly flow on Monday will transport cold air into southeastern New England along with dry weather. At this time it still appears that a clipper low pressure system will come from south central Canada across the Great Lakes and then across the Northeast later Tuesday through early Wednesday with some risk of snow/mix. Though at this stage it does not look like a big storm, we should monitor it as there will be some potential travel impacts. Expect a shot of wind and very cold air, the coldest for the season so far, by the middle of next week.

SOUTHEASTERN NEW ENGLAND FORECAST…
TONIGHT: Variably cloudy. Lows in the 20s. Wind SW 5-15 MPH, gusting around 20 MPH.
FRIDAY: Mostly sunny. Highs 35-40. Wind W 10-20 MPH, gusting around 25 MPH.
FRIDAY NIGHT: Mostly clear. Lows 15-20 inland, 20-25 coast. Wind W 5-15 MPH, diminishing late.
SATURDAY: Increasing clouds. Light snow or mix possible by late day southern MA and RI. Highs around 30 interior MA and southern NH, 30s elsewhere. Wind light variable.
SATURDAY NIGHT: Overcast. Mix to rain Cape Cod and Islands, snow to sleet then rain southern RI and east coastal MA, snow to sleet and freezing rain interior MA, northern RI, and southern NH except sleet to rain Seacoast region. Snow accumulation less than 1 inch immediate coastal areas, 1-2 inches from central and northern RI through most of eastern MA, 2-4 inches Merrimack Valley through north central MA into most of southern NH. Temperatures 25-30 interior valleys, 30s elsewhere, rising to around 40 coastal areas at night. Wind NE to N under 10 MPH interior MA and southern NH, NE to E 5-15 MPH increasing to 10-20 MPH elsewhere.
SUNDAY: Mostly cloudy. Ice to rain north central MA and southern NH, rain elsewhere, all tapering off midday from southwest to northeast. An additional passing rain shower possible west to east afternoon. Highs in the 40s. Wind E to SE 10-20 MPH briefly shifting to S over southeastern MA, then shifting to SW all areas 15-25 MPH with higher gusts during the afternoon.
MONDAY: Mostly sunny and windy. Low 20. High 35.
TUESDAY: Increasing clouds. PM snow. Low 15. High 30.
WEDNESDAY: Mostly cloudy with snow showers AM. Sun and clouds PM. Low 20. High 30.
THURSDAY: Mostly sunny. Low 10. High 20.

3:51PM

2014 ends tonight. As 2015 gets underway and people ring in the New Year hopefully in their preferred way, inside or outside, one thing is for sure, it will be chilly outside around southeastern New England. Certainly far from the coldest New Year’s Eve we’ve had around these parts, but given the recent mild pattern, it will feel quite cold for anybody out there, so if you are going to be one of them, bundle up!

As expected, high pressure took control on Monday and continues to dominate the weather making it dry and somewhat colder than we have seen recently. This will continue through early Saturday but will then give way to a rapidly-approaching low pressure area from the southwest late Saturday. The timing of this system appears as if it will be similar to the thinking on the previous blog update, late Saturday through early or the mid part of Sunday, and the track is still expected to be one that takes a primary low pressure area into the Great Lakes but develops a secondary near southeastern New England. Though it will be cold enough for snow in many areas at the outset of this system, warmer air coming in both at the surface and aloft will change it to rain. We will have to watch for a brief period of icing especially inland as some cold air may be trapped at the surface there Saturday night and Sunday morning. At this time, we are still too far away from the event to have any real confidence on details of this, so this possibility will be revisited and fine-tuned. Once we get to late Sunday, low pressure will be heading away and being replaced by windy and colder conditions which will last through Monday. By Tuesday, a small but possibly vigorous low pressure area may sweep through the region from the Great Lakes, bringing the chance of snow or mixed precipitation, however this fast-moving system would not have enough time to produce any large snow amounts. Look for more cold and windy weather behind that system as we’re finally able to tap some of the cold air in Canada and drag it down here. This does not look like the start of a long-lasting cold snap, however.

SOUTHEASTERN NEW ENGLAND FORECAST…
TONIGHT – NEW YEAR’S EVE: Partly cloudy with temperatures falling slowly through the 20s during the evening to near 20 many areas and upper 10s inland valleys by midnight. Overnight lows 15-20. Wind light SW.
THURSDAY – NEW YEAR’S DAY: Mostly sunny. Highs 30-35. Wind W 5-15 MPH.
THURSDAY NIGHT: Mostly clear. Lows 15-20. Wind W 5-15 MPH.
FRIDAY: Mostly sunny. Highs 30-35. Wind W 5-15 MPH
SATURDAY: Increasing clouds. Snow/mix arriving late day or night, changing to mix/rain overnight. Low 20. High 35.
SUNDAY: Cloudy with mix/rain morning. Mostly cloudy to partly sunny with rain to snow showers afternoon. Low 30. High 45.
MONDAY: Mostly sunny. Low 25. High 35.
TUESDAY: Clouding up. PM snow or snow showers. Low 20. High 30.

Thank you all for reading and contributing during 2014 and previously as well! Looking forward to 2015! Have a safe and happy New Year!

From the WHW Crew (TK and a small supporting cast who prefer to remain nameless). 🙂

7:27AM

This update only slows the timing of the unsettled weather system expected on the weekend, behind which a shot of windy and very cold air is expected. Up until the weekend, high pressure and chilly/dry weather will continue to dominate, including for First Night & New Year’s Day.

SOUTHEASTERN NEW ENGLAND FORECAST…
TODAY: Mostly sunny. Highs around 30. Wind NW 5-15 MPH.
TONIGHT: Mostly clear. Lows middle 10s to around 20s. Wind light NW to W.
WEDNESDAY: Mostly sunny. Highs around 30. Wind W 5-15 MPH.
WEDNESDAY NIGHT – NEW YEAR’S EVE: Mostly clear. Evening temps 20s. Overnight lows 15-20. Wind light W.
THURSDAY – NEW YEAR’S DAY: Partly cloudy. Highs in the 30s. Wind WSW 5-15 MPH.
FRIDAY: Mostly sunny. Low 20. High 35.
SATURDAY: Increasing clouds. Night snow to rain. Low 20. High 40.
SUNDAY: Mostly cloudy. Rain ending as mix/snow showers. Low 35. High 45.
MONDAY: Sun & clouds, windy. Low 15. High 30.

11:06PM

This look at the coming week is not really any different than the blog posted earlier on Sunday, other than dropping this Sunday’s forecast and adding next Sunday’s forecast. High pressure and a chill will be the rule during the next 5 days as 2014 winds up and 2015 gets underway. By the first weekend of the New Year, expect a storm to pass north of the region with a milder rain event arriving on Saturday and departing by early Sunday.

SOUTHEASTERN NEW ENGLAND FORECAST…
TONIGHT: Clearing. Lows around 30. Wind W 5-15 MPH.
MONDAY: Mostly sunny. Highs around 40. Wind NW 5-15 MPH.
MONDAY NIGHT: Clear. Lows around 15. Wind light NW.
TUESDAY: Mostly sunny. Highs around 35. Wind light NW.
WEDNESDAY: Mostly sunny. Low 15. High 30.
THURSDAY – NEW YEAR’S DAY: Mostly sunny. Low 15. High 35.
FRIDAY: Mostly sunny. Low 25. High 40.
SATURDAY: Cloudy. Mix to rain. Low 30. High 50.
SUNDAY: Variably cloudy. Early rain showers. Low 40. High 45.

8:18AM

The 2 weekend days in this forecast (today and next Saturday) will be the mild and unsettled ones as a cold front slides through southern New England today and low pressure arrives from the southwest next Saturday, and the 5 days between (which include New Year’s Day) will be dry and colder as high pressure dominates and storminess stays to the south.

SOUTHEASTERN NEW ENGLAND FORECAST…
TODAY: Mostly cloudy. Rain showers this morning, ending west to east by midday. Highs around 50. Wind W 5-15 MPH, gusting 20-25 MPH.
TONIGHT: Clearing. Lows around 30. Wind W 5-15 MPH.
MONDAY: Mostly sunny. Highs around 40. Wind NW 5-15 MPH.
TUESDAY: Mostly sunny. Low 15. High 35.
WEDNESDAY: Mostly sunny. Low 15. High 30.
THURSDAY – NEW YEAR’S DAY: Mostly sunny. Low 15. High 35.
FRIDAY: Mostly sunny. Low 25. High 40.
SATURDAY: Cloudy. Mix to rain. Low 30. High 50.

5:18PM

We’re in the stretch between Christmas and New Year’s now, and the originally advertised pattern change to cold never quite took place, for reasons talked about previously. But what is really coming up? Quiet weather for now as we head down the home stretch of 2014 and into the opening 2 days of 2015.

First, high pressure to the south of the region will provide a dry and mild Saturday, then a cold front will pass through southeastern New England on Sunday accompanied by cloudiness and a few rain showers as the air will still be mild. A wave forming on the front as it settles to the south will stay south of the region Monday but may throw some additional cloudiness across the sky especially in southern locations. Otherwise, the trend for the exit of 2014 and arrival of 2015 will be to colder and dry weather as a sprawling high pressure area dominates, originating in Canada which has gradually turned colder in the last week or so. The upper pattern will still not support a genuine plunge into Arctic cold, nor will it support any storminess reaching this area.

SOUTHEASTERN NEW ENGLAND FORECAST…
TONIGHT: Clear. Lows 25-30 inland valleys, 30-35 elsewhere. Wind light W to SW.
SATURDAY: Sunny. Highs around 50. Wind SW 5-15 MPH.
SATURDAY NIGHT: Increasing clouds. Lows in the 30s. Wind SW 10-20 MPH.
SUNDAY: Variably cloudy. Chance of rain showers. Highs in the 40s. Wind SW 10-20 MPH and gusty.
MONDAY: Partly sunny. Low 25. High 40.
TUESDAY: Mostly sunny. Low 20. High 35.
WEDNESDAY – NEW YEAR’S EVE: Mostly sunny. Low 20. High 35.
THURSDAY – NEW YEAR’S DAY: Mostly sunny. Low 15. High 30.
FRIDAY: Mostly sunny. Low 20. High 35.

10:18AM

After a cold front sweeps offshore this Christmas morning putting an end to the wet weather and introducing a drier, gusty westerly wind and some sunshine for Christmas Day, the only other system likely to pass through here during the next several days is a cold front sometime on Sunday. By early next week as the final days of 2014 are here, a string of weak storms will likely be kept well to the south by a sprawling high pressure area. Though it will turn colder for early next week, there is no major cold air in sight as the current weather pattern does not allow a major push of it to advance this way from northern and central Canada.

SOUTHEASTERN NEW ENGLAND FORECAST…
TODAY – CHRISTMAS: Rain ends Cape Cod by noon. Clouds give way to clearing west to east midday. Sunshine and passing clouds afternoon. Temperatures cooling through the 50s. Wind W 10-20 MPH gusting to 30 MPH, higher in some locations.
TONIGHT: Mostly clear. Lows 30-35. Wind W 10-20 MPH gusting around 30 MPH, diminishing slowly.
FRIDAY: Mostly sunny. Highs 45-50. Wind WSW 5-15 MPH.
SATURDAY: Partly cloudy. Low 35. High 55.
SUNDAY: Variably cloudy. Chance of rain showers. Low 40. High 45.
MONDAY THROUGH WEDNESDAY: Variably cloudy. Lows in the 20s. Highs in the 30s.

8:24AM

If you were dreaming of a mild and wet Christmas, it will come true. If you were dreaming of a White Christmas around southeastern New England, keep dreaming. You’ll have to head into northern and far western New England to find residual snow on the ground from previous snow events. But this time around here, we have a mild rain event for the 2 days leading up to and including part of the holiday itself.

A well-advertised, but weaker-than-originally-hyped-to-be low pressure area will crank up and move through the Great Lakes into eastern Canada during the next few days. This system will first drag a warm front toward and eventually through southeastern New England with periods of rain and drizzle ahead of it in the relatively cool and damp air. Once that front goes by, it will introduce a moderate to strong southerly flow of unseasonably mild air with clusters of showers and even possible thunderstorms within that warm sector for much of Christmas Eve day into night as well. The cold front associated with this storm system will push eastward across the region on Christmas Day, eventually putting an end to the wet weather as a drying westerly wind takes over, though it may not completely clear out until the night.

High pressure will slide eastward passing just south of New England Friday and Saturday. This will maintain milder than normal conditions with dry weather for these days. By Sunday, a cold front will cross the region from the west, and we’ll probably just see some rain showers ahead of and with the front and maybe a few snow showers behind it as a shot of colder air arrives later Sunday and then lasts through Monday of next week, which should be a dry day.

SOUTHEASTERN NEW ENGLAND FORECAST…
TODAY AND TONIGHT: Overcast. Periods of rain. Areas of fog and drizzle. Temperatures steady 38-45. Wind light E.
WEDNESDAY AND WEDNESDAY NIGHT – CHRISTMAS EVE: Mostly cloudy. Isolated to scattered rain showers day. Scattered to numerous rain showers and a chance of thunderstorms at night. Temperatures rising from the 40s through the 50s during the day to a nighttime high of 58-65. Wind shifting to S and increasing to 15-25 MPH with higher gusts.
THURSDAY – CHRISTMAS DAY: Cloudy morning with rain showers likely, but ending from west to east midday. Mostly cloudy afternoon but clearing line approaching from west with sun possible especially Boston area westward before sunset. Temperatures falling through the 50s. Wind W 10-20 MPH and gusty.
FRIDAY: Mostly sunny. Low 30. High 50.
SATURDAY: Partly cloudy. Low 35. High 55.
SUNDAY: Mostly cloudy to partly sunny. Chance of rain showers morning and a few snow showers late day. Low 35. High 45.
MONDAY: Partly cloudy. Low 25. High 40.

6:59PM

The atmosphere made a feeble attempt to deliver a set-up for a white Christmas, with some ocean effect snow mainly south of Boston and some scattered light snow around southeastern New England as a disturbance at upper levels passed through from southwest to northeast. But that’s about it for snow chances. And with milder to warmer air arriving in time for Christmas, the chances of a white Christmas drop to nil. Maybe next year! So exactly what is coming up during the week ahead? Read on…

Monday / Tuesday … Air flow shifts slowly from northerly to easterly as high pressure tries to hold on north of New England and low pressure tries to approach from the south but weakens and washes out. Cloudiness will dominate and there may be spotty light snow Monday and scattered light rain Tuesday as the atmosphere warms slightly.

Wednesday / Thursday (Christmas Eve / Christmas Day) … Here it comes! The storm of the century! Right? Wrong. Low pressure will crank up in the Midwest during this time, and will send a warm front northward through southern New England Wednesday, preceded by some light rain, drizzle, and fog. As long as the warm front pushes right through, a stronger southerly wind flow will then develop along with areas of rain showers. We cannot even rule out breaks in the clouds and some sun between the warm front and approaching cold front. That cold front will approach later at night into the early hours of Christmas Day with showers likely and even the chance of thunderstorms, somewhat unusual for late December. During Christmas Day itself, the front will push offshore but slowly enough that moisture still still be moving up along and behind it with additional rain showers. Behind this front, the push of cooler air is fairly weak, but a gusty west wind and a cool-down and dry-out is likely by later Christmas Day and Christmas Night.

Friday / Saturday … Southwesterly flow aloft, westerly flow at the surface, high pressure passing to the south. That is a dry and milder than average set up for late week.

Sunday … Early call would be for a cold front to sweep through from the west with a colder air mass arriving. We’ll also have to watch for a potential low pressure wave from the southern branch of the jet stream moving out south of the region but it is uncertain if that will form and affect the region.

SOUTHEASTERN NEW ENGLAND FORECAST…
TONIGHT: Cloudy. Spotty snow flurries with no accumulation, but a few bands of briefly light to moderate snow showers South Shore of MA with minor additional accumulation. Lows 25-33. Wind light NE.
MONDAY: Mostly cloudy to partly sunny. Spotty snow flurries. Highs 33-40. Wind light N.
MONDAY NIGHT: Cloudy. Patchy drizzle and fog. Temperatures steady 33-40. Wind light NE.
TUESDAY: Cloudy. Areas of fog and drizzle. Chance of light rain. Highs 38-45. Wind light E.
WEDNESDAY – CHRISTMAS EVE: Morning – cloudy with drizzle and fog and a chance of rain. Afternoon – mostly cloudy with scattered rain showers. Evening – cloudy with scattered to numerous rain showers and a chance of thunderstorms. Night – rain showers likely and a chance of thunderstorms. Low 45. High 60.
THURSDAY – CHRISTMAS DAY: Mostly cloudy. Rain showers diminishing west to east. Low 50. High 55.
FRIDAY: Mostly sunny. Low 32. High 48.
SATURDAY: Partly cloudy. Low 33. High 54.
SUNDAY: Variably cloudy. Chance of rain to snow showers. Temperatures falling 40s to 30s.

7:45AM

So far, snow showers have been confined mainly to an area just inland and south of Boston with South Weymouth MA topping 2 inches, slightly less in nearby areas, and mix/rain showers from the immediate shoreline through Cape Cod, with lighter snow showers back into parts of RI. Very little has taken place from Boston northward. With cold air remaining in place and an onshore flow continuing, will keep the threat of snow and rain showers going though lessening somewhat into Monday, then more of a drizzle and fog threat by Tuesday as low level moisture increases and air warms aloft and slightly at the surface. Still looking for a weakening low to make an attempt to pass southeast of the region Tuesday but losing its identity as it does so. As low pressure develops and intensifies while moving through the Great Lakes and into Ontario on Christmas Eve and Christmas Day we will see the passage of a warm front on the eve bringing some rain/fog/drizzle for part of Christmas Eve and a band of rain showers and possible thunderstorms in the early hours of Christmas Day as a cold front swings through from the west. In between the two fronts a significant spike in temperature may take place. There is not all that much cold air available to be pulled in behind the cold front so expect a modest cool-down but a chilly-feeling breeze arriving by later Christmas Day after a wet start as rain showers linger. We should see a colder trend but not a plunge into really cold air late in the week.

SOUTHEASTERN NEW ENGLAND FORECAST…
TODAY: Mostly cloudy though some breaks of sun may develop later in the day especially well inland. Areas of snow showers initially mainly south of Boston except rain showers around Cape Cod, then a chance of snow showers in northeastern MA and southeastern NH with only minor accumulation possible. Highs in the 30s, around 40 Cape Cod. Wind NE 5-15 MPH.
TONIGHT: Mostly cloudy. Scattered snow showers except mix/rain showers Cape Cod. Lows 25-30 interior areas, 30-35 coastal areas. Wind light NE.
MONDAY: Mostly cloudy. Scattered snow showers except rain showers Cape Cod. Highs in the 30s. Wind NE 5-15 MPH.
TUESDAY: Cloudy. Areas of drizzle/fog. Low 35. High 45.
WEDNESDAY – CHRISTMAS EVE: Cloudy with a chance of rain/drizzle/fog morning. Mostly cloudy to partly sunny afternoon. Mostly cloudy with rain showers and possible thunderstorms at night. Low 45. High 60.
THURSDAY – CHRISTMAS DAY: Mostly cloudy. Rain showers likely especially morning. Low 50. High 55.
FRIDAY: Partly cloudy. Low 35. High 45.
SATURDAY: Partly sunny. Low 25. High 45.

9:16AM

The weekend will feature some ocean-effect and briefly upper-level-disturbance-enhanced snowfall for parts of southeastern New England, as high pressure to the north provides a northeasterly air flow. The greatest likelihood for snow that will accumulate will be in coastal areas of eastern MA especially Boston northward, and just inland over all of eastern MA to northern RI. Less likely but still possible are some minor accumulations elsewhere. No accumulation is expected on Cape Cod and the Islands where it will be too mild to support snow for most of the event. Elsewhere, expect a coating to 1 inch of snow, but areas of 1-3 inches especially just inland from the coast and over elevated locations especially southwest of Boston It is not out of the question that a few small bands of greater than 3-inch accumulation could occur due to the combination of ocean enhancement and energy passing through in upper levels. Southern NH will have less activity and therefore only scattered coatings of snow.

Early next week, an onshore flow will continue. Enough dry air may work in for some sunshine Monday, but clouds should dominate again Tuesday as a weakening low pressure area passes south of the region.

A deep trough swinging through the Midwest and Great Lakes will develop a large storm system there for Christmas Eve and Christmas Day (Wednesday-Thursday), sending a frontal system through New England. What is not immediately known is the timing of the front and heaviest rainfall. And it will be rain as the air will be far too mild to support snow. There may also be some strong, gusty winds. An early estimate is that most of the rain may come through in the late night hours of Christmas Eve to early hours of Christmas Day, with a drying trend during the holiday itself.

By the end of next week it will trend somewhat colder along with mostly dry weather on Friday.

SOUTHEASTERN NEW ENGLAND FORECAST…
TODAY: Low clouds increase across most of eastern MA through RI with occasional snow showers developing, except snow to rain showers Cape Cod & Islands. Partly sunny north central MA into southern NH though clouds and a few snow showers will eventually take over near the NH Seacoast. Highs in the 30s. Wind NE 5-15 MPH.
TONIGHT: Mostly cloudy. Occasional to frequent snow showers, especially eastern MA into RI, but rain showers Cape Cod. Lows upper 20s to lower 30s except near 35 Cape Cod. Wind NE 5-15 MPH.
SUNDAY: Mostly cloudy. Frequent to occasional snow showers, especially morning and midday. Highs in the 30s. Wind NE 5-15 MPH.
MONDAY: Partly sunny. Low 28. High 40.
TUESDAY: Mostly cloudy. Low 30. High 42.
WEDNESDAY – CHRISTMAS EVE: Partly sunny to mostly cloudy. Risk of showers day. Period of rain night. Low 35. High 48.
THURSDAY – CHRISTMAS DAY: Mostly cloudy to partly cloudy. Risk of rain showers early. Low 38. High 45.
FRIDAY: Partly cloudy. Low 25. High 35.

6:37PM

It may be at the edge of the forecast range, but Christmas is nearing! A lot of shopping and travel plans will be attempted during the next 7 days, so let’s take a look at how the weather may play out. Starting way out, about the Christmas Eve / Christmas Day storm threat: To be honest with you, I realize the reason that many media are talking about the system in as much detail as they are this far in advance, with the importance of peoples’ plans and all, but we should reel that in a bit, because as much as computer guidance has changed in the last 3 days on the outlook for next week, and the fact that the pieces or ingredients of this potential event are scattered around various portions of the Pacific Ocean at this time, things are likely to shift further. What I put in that part of the forecast will be low confidence, and will, as always, be fine-tuned with time. Leading up to that we also have a few weather changes to encounter. First, we have a cooler northwesterly flow of air that became established during the day Thursday behind a departing low pressure area. This will lead to a dry and cool day Friday as high pressure builds north of the region. This high will orient itself in such a way that the wind will turn northeast over the weekend, bringing episodes of ocean cloudiness into portions of southeastern New England, especially coastal areas, with a little more emphasis on cloudiness and possible drizzle and snow showers Sunday versus Saturday. High pressure should nose southward a little more for fair weather on Monday. We’ll have to watch for a wave of low pressure passing near or east of the region Tuesday as a boundary will be nearby. This is uncertain, detail-wise, but odds would favor Tuesday being a cloudier day and perhaps somewhat damp if low pressure is close enough. So there will be plenty to monitor during the coming days…

SOUTHEASTERN NEW ENGLAND FORECAST…
TONIGHT: Partly cloudy. Lows ranging from the lower 20s rural areas to around 30 along the coastline. Wind NW 5-15 MPH, gusting to 25 MPH, diminishing somewhat overnight.
FRIDAY: Mostly cloudy. Highs in the 30s. Wind NW 5-15 MPH with higher gusts.
FRIDAY NIGHT: Mostly clear. Lows in the 20s. Wind light N.
SATURDAY: Periods of ocean cloudiness especially coastal areas from Boston to Cape Cod and across southeastern MA and parts of RI at times. Sunnier elsewhere. Highs around 40. Wind NE 5-15 MPH.
SUNDAY: Mostly cloudy. Spotty drizzle/flurries especially eastern areas. Low 32. High 40.
MONDAY: Partly sunny. Low 30. High 42.
TUESDAY: Mostly cloudy. Chance of light mix/rain especially east. Low 32. High 42.
WEDNESDAY – CHRISTMAS EVE: Partly sunny. Low 32. High 46.
THURSDAY – CHRISTMAS DAY: Mostly cloudy. Rain to snow showers. Temps cooling 40s to 30s.

2:48AM

The Arctic air which inhabited Canada for much of the month of November headed back over the pole and into Siberia during December and has shown very little push back into North America. Though there are signs that this will finally begin to change, it will take place slowly, so systems between now and the holiday will have limited cold air to work with. This will limit, but not eliminate, the chance of getting some snow on the ground before Christmas. However, the system coming through southeastern New England today is not going to be one that brings the chance of any meaningful snowfall. A parent low pressure area is passing well northwest of the region while a secondary low moves right across southeastern New England. The most widespread rain will take place first thing in the morning, with just lots of clouds and a few showers otherwise. Tonight, cooler air will filter in, and some rain showers will be around at first, but eventually overnight and into Thursday morning, a disturbance will bring a chance of snow showers as air will become cold enough. Drier air will filter in later Thursday and especially Friday into Saturday as high pressure builds in. By Sunday, developing low pressure over the Southeast is expected to move off the Mid Atlantic Coast. At this time, it appears this system will not turn into a major storm, but it, combined with high pressure to the north, will bring cloudiness and a chance of some rain and snow to the region Sunday. Low pressure may be slow to move away so that some snow showers are possible Monday, before narrow high pressure brings dry weather for Tuesday.

SOUTHEASTERN NEW ENGLAND FORECAST…
TODAY: Cloudy with areas of fog into mid morning, including rain which will end southwest to northeast. Mostly cloudy to partly sunny with a chance of a few rain showers remainder of the day. Highs in the 40s. Wind light E to variable becoming W and increasing to 10-20 MPH in the afternoon.
TONIGHT: Mostly cloudy. Scattered rain showers before midnight. Chance of snow showers late at night. Lows in the 30s. Wind W to NW 10-20 MPH.
THURSDAY: Mostly cloudy to partly sunny. Scattered snow showers in the morning. Highs around 40. Wind NW 10-20 MPH and gusty.
FRIDAY: Mostly sunny. Low 20. High 35.
SATURDAY: Partly sunny. Low 19. High 41.
SUNDAY: Mostly cloudy. Chance of light snow/rain. Low 28. High 38.
MONDAY: Mostly cloudy. Chance of snow showers. Low 26. High 36.
TUESDAY: Partly sunny. Low 22. High 40.

7:36AM

Quick update only. Full discussion and updated forecast later today…

SOUTHEASTERN NEW ENGLAND FORECAST…
TODAY: Cloudy. Scattered drizzle. Isolated rain showers. Highs 40-45. Wind light E.
TONIGHT: Cloudy. Scattered rain showers before midnight. Numerous rain showers after midnight. Temperatures steady around 40. Wind E 5-15 MPH.
WEDNESDAY: Cloudy with rain showers likely through mid morning, ending lastly over Cape Cod. Mostly cloudy to partly sunny afternoon. Highs 45-50. Wind SE 5-15 MPH early then W 10-20 MPH and gusty.
THURSDAY: Variably cloudy. Scattered snow showers. Low 25. High 35.
FRIDAY: Mostly sunny. Low 20. High 35.
SATURDAY: Increasing clouds. Low 20. High 35.
SUNDAY: Mostly cloudy. Chance of snow inland, rain or snow coast. Low 25. High 35.
MONDAY: Mostly cloudy. Chance of snow showers. Low 20. High 30.