8:14AM

DAYS 1-5 (DECEMBER 23-27)
High pressure will bring bright, dry, and seasonably cold weather to the region today, perfect for any last minute shopping or an evening drive around to view the lights. A weak and fast-moving low pressure area but with decent upper level support will move across the region Monday, Christmas Eve, producing a minor snow event, although initially it will be too mild to support snowfall along the South Coast. High pressure builds in on Tuesday, Christmas Day, and gradually slides toward the region, moving overhead by Thursday, with dry and seasonably cold weather for the holiday and midweek.
Forecast details…
TODAY: Mostly sunny. Highs 35-42. Wind W 5-15 MPH.
TONIGHT: Increasing clouds. Lows 25-32. Wind light variable.
MONDAY: Cloudy morning with a period of snow accumulating a coating to 1 inch except rain that may mix with snow South Coast. Variably cloudy afternoon with snow showers likely with additional dustings of snow possible. Highs 35-42. Wind variable 5-15 MPH morning, N 10-20 MPH afternoon.
MONDAY NIGHT (CHRISTMAS EVE): Partly cloudy with a chance of snow flurries in eastern areas early, otherwise mostly clear. Lows 17-24. Wind NW 5-15 MPH with higher gusts.
TUESDAY (CHRISTMAS DAY): Mostly sunny. Highs 33-40. Wind NW 5-15 MPH.
WEDNESDAY: Partly cloudy. Lows in the 10s. Highs in the 30s.
THURSDAY: Mostly sunny. Lows in the 10s. Highs in the 30s.

DAYS 6-10 (DECEMBER 28-JANUARY 1)
Low pressure will likely pass north of the region bringing a warm front / cold front combo to the region December 28 with a period of rain then a chance of rain showers. Breezy, chilly, drier weather returns December 29. Will watch a wave of low pressure that may bring a period of mix and/or snow to the region December 30 before dry weather to end 2018. Unsettled weather may return as early as the first day of 2019.

DAYS 11-15 (JANUARY 2-6)
A boundary nearby may be the focus for a string of low pressure areas to bring unsettled weather in the form of several periods of precipitation of several varieties for at least a portion of this period.

9:34AM

DAYS 1-5 (DECEMBER 22-26)
The dry-out process begins today, but not until a cold front sweeps eastward across the region this morning and very early afternoon with thin band of rain showers and trailed by a few additional ones. The mild air in place will be replaced by seasonable cold tonight and Sunday, along with dry weather. A small clipper low pressure system will bring some light snow/rain (depending on location) for the morning hours of Monday and then some snow showers lingering during the afternoon adding some festive flakes to the Christmas Eve atmosphere. Seasonably cold and dry weather is then expected for Christmas Day Tuesday and Wednesday as well as high pressure builds in.
Forecast details…
TODAY: Mostly cloudy through midday with a line of rain showers moving west to east across the region mid morning through very early afternoon and one or two additional rain showers possible just behind it. Becoming partly sunny by mid afternoon. Temperatures steady 48-55 morning, falling through the 40s afternoon. Wind SW shifting to W 15-25 MPH with higher gusts possible.
TONIGHT: Clearing. Lows 28-35. Wind WNW 15-25 MPH evening, diminishing overnight.
SUNDAY: Mostly sunny. Highs 35-42. Wind W 5-15 MPH.
SUNDAY NIGHT: Increasing clouds. Lows 25-32. Wind light variable.
MONDAY (CHRISTMAS EVE): Cloudy morning with a period of snow accumulating a coating to 1 inch except rain that may mix with snow South Coast. Variably cloudy afternoon with a chance of snow showers, favoring southern NH and eastern MA. Highs 35-42. Wind variable 5-15 MPH morning, N 10-20 MPH afternoon.
TUESDAY (CHRISTMAS DAY): Mostly sunny. Lows from the upper 10s to middle 20s. Highs in the 30s.
WEDNESDAY: Mostly sunny. Lows in the 10s. Highs in the 30s.

DAYS 6-10 (DECEMBER 27-31)
High pressure hangs on with fair/cold weather December 27 before a west-to-east moving low pressure system brings mix/rain December 28. Clearing, breezy, seasonably cold December 29. Currently staying with a dry forecast for December 30-31 but a boundary not far south of the region may change that and allow a wave of low pressure to get close enough for a period of snow/mix. Will keep an eye on this.

DAYS 11-15 (JANUARY 1-5)
A boundary nearby may be the focus for a string of low pressure areas to bring unsettled weather in the form of several periods of precipitation of several varieties to start off the new year.

8:55AM

DAYS 1-5 (DECEMBER 21-25)
A stormy solstice as low pressure cuts west of the region on this first day of winter (solstice 5:23PM today), bringing mild air, rain, and wind. One main rain area comes through this morning with a warm front, which will introduce a temperature spike and increasing southerly winds. Some of the heaviest rainfall will occur in showery form in a band that transitions from west to east across the region late afternoon and early evening. This band will be the one most likely to produce areas of flooding and localized damaging wind gusts. Things should settle down later at night into Saturday morning through a few additional showers are possible, and one final band of showers may cross the region west to east late morning to early afternoon Saturday with a cold front, which will put an end to the brief warm-up, and bring seasonable cold back into the region by Saturday night and Sunday. This colder air will then remain with the region through Christmas Day on Tuesday. The only shot at pre-Christmas snow remains the passage of a weak disturbance which is currently timed for the morning hours of Christmas Eve on Monday, although a touch of instability could still support a few afternoon snow flurries as it moves away. There will be no repeat of the thundersnowstorm of Christmas morning 2017, but other than our windy/wet event today, decent travel weather will be the rule right through the holiday.
Forecast details…
TODAY: Cloudy. Rain and areas of fog morning. Numerous rain showers this afternoon including a band of heavier showers and possible thunderstorms later in the day. Highs 55-62. Wind S 10-20 MPH except 20-30 MPH South Coast, higher gusts likely all areas.
TONIGHT: Cloudy with numerous rain showers and possible thunderstorms early, diminishing to scattered rain showers from west to east. Lows
48-55. Wind S 15-30 MPH with higher gusts, shifting to SW and diminishing to 5-15 MPH with higher gusts overnight.
SATURDAY: Mostly cloudy. Chance of rain showers very early and one more passing line of rain showers possible west to east during midday. Temperatures steady 48-55 morning, falling through the 40s afternoon. Wind SW shifting to W 15-25 MPH with higher gusts possible.
SATURDAY NIGHT: Clearing. Lows 28-35. Wind WNW 15-25 MPH evening, diminishing overnight.
SUNDAY: Mostly sunny. Highs 35-42. Wind W 5-15 MPH.
MONDAY (CHRISTMAS EVE): Mostly cloudy with a slight chance of light snow except rain or snow South Coast during the morning. Partly sunny with isolated snow showers afternoon. Lows from the upper 20s to middle 30s. Highs from the middle 30s to lower 40s.
TUESDAY (CHRISTMAS DAY): Mostly sunny. Lows from the upper 10s to middle 20s. Highs in the 30s.

DAYS 6-10 (DECEMBER 26-30)
High pressure will bring fair and seasonably cold weather early in the period. A passing low pressure area brings a precipitation threat December 28 into early December 29 before fair and colder weather arrives later in the period.

DAYS 11-15 (DECEMBER 31-JANUARY 4)
Dry, seasonably chilly to end 2018. 2019 may begin with a stretch of unsettled weather bringing rain and/or snow to the region. Too far out for any good idea on details and timing.

7:38AM

DAYS 1-5 (DECEMBER 20-24)
High pressure moves offshore today, a very nice day by December standards despite fading sun later behind cloudiness ahead of what will be a potent storm, the center of which will pass just west of New England late Friday. This will allow warm air and tropical moisture to flow northward across southeastern New England making for a wet and fairly warm Winter Solstice day (solstice 5:23PM Friday). With ground still somewhat saturated from the wet autumn, flooding may again be an issue as some heavy rainfall will occur in waves with this system. Also, pockets of wind damage may occur due to a moderate to strong southerly wind. It will be unstable enough that thunderstorms are possible. The storm center will head across southeastern Canada Saturday, dragging drier air in behind it, with colder air eventually arriving as a cold front sweeps across the region. This will return seasonably chilly air to the region but with bright and fair weather for Sunday. A disturbance will pass over or just south of the region Monday, Christmas Eve, bringing the slight chance of scattered light precipitation.
Forecast details…
TODAY: Increasing clouds. Highs 40-47. Wind S up to 10 MPH.
TONIGHT: Thickening overcast. Rain arriving overnight. Temperatures steady 40-47. Wind S 5-15 MPH, higher gusts.
FRIDAY: Cloudy. Rain likely with embedded heavier showers and possible thunderstorms. Highs 55-62. Wind S 10-20 MPH except 20-30 MPH South Coast, higher gusts likely all areas.
FRIDAY NIGHT: Cloudy with numerous rain showers and possible thunderstorms, diminishing from west to east overnight. Lows 48-55. Wind S 15-30 MPH with higher gusts, shifting to SW and diminishing to 5-15 MPH with higher gusts overnight.
SATURDAY: Mostly cloudy. Chance of rain showers very early and a passing rain shower possible midday. Temperatures steady 48-55 morning, falling through the 40s afternoon. Wind SW shifting to W 15-25 MPH with higher gusts possible.
SUNDAY: Mostly sunny. Temperatures fall to the 30s then remain steady during the day.
MONDAY (CHRISTMAS EVE): Variably cloudy. Chance of snow showers except rain showers South Coast. Lows in the 20s. Highs from the middle 30s to lower 40s.

DAYS 6-10 (DECEMBER 25-29)
Dry and seasonably cold December 25 (Christmas Day) through December 27. Risk of some rain/snow showers and slightly milder late period from a northern jet stream disturbance.

DAYS 11-15 (DECEMBER 30-JANUARY 3)
Dry, seasonably chilly to end 2018. A storm system may bring some unsettled weather in the earliest days of 2019.

7:28AM

DAYS 1-5 (DECEMBER 19-23)
High pressure moves overhead today then offshore Thursday with dry weather and a moderating temperature trend. A potent low pressure area will travel west of New England Friday and early Saturday on its trek from the Tennessee Valley to southeastern Canada, dragging up warm air and tropical moisture, making the first day of winter on Friday (solstice 5:23PM), feel more like a spring day in many aspects. We’ll have to be alert for possible flooding and wind damage during the passage of this system. It gets out of here Saturday, which may start on the wet side but will transition to drier, but still be rather mild with only a gradual cool-down. More seasonably chilly air arrives for Sunday.
Forecast details…
TODAY: Mostly sunny. Highs 33-40. Wind W 5-15 MPH becoming light variable.
TONIGHT: Mostly clear. Lows 22-29. Wind light SW.
THURSDAY: Increasing clouds. Highs 40-47. Wind S up to 10 MPH.
THURSDAY NIGHT: Thickening overcast. Rain arriving overnight. Temperatures steady 40-47. Wind S 5-15 MPH, higher gusts.
FRIDAY: Cloudy. Rain likely with embedded heavier showers and possible thunderstorms. Highs 55-62. Wind S 10-20 MPH except 20-30 MPH South Coast, higher gusts likely all areas.
SATURDAY: Mostly cloudy to partly sunny. Risk of rain showers early. Temperatures fall from the 50s to the 40s.
SUNDAY: Mostly sunny. Temperatures fall to the 30s then remain steady during the day.

DAYS 6-10 (DECEMBER 24-28)
Generally seasonable cold expected during this period. Mainly dry except some snow showers possible from a weak passing disturbance early in the period.

DAYS 11-15 (DECEMBER 29-JANUARY 2)
A milder and wetter start to the period then drier and seasonably chilly. Another system may bring unsettled weather within the first couple days of the New Year.

7:31AM

DAYS 1-5 (DECEMBER 18-22)
A piece of arctic air comes across New England today on gusty northwest winds under a bright but low angle sun mixed with clouds as we approach the winter solstice, which will occur Friday late-day and during weather much different than what starts this 5-day forecast period. The transition from here to there will be rather tranquil as high pressure moves overhead Wednesday then offshore Thursday with moderating temperatures. Friday’s weather will resemble spring a little more than the first day of winter as we see low pressure track just west of the region, dragging some warm air with tropical moisture up the eastern seaboard. By Saturday, we’ll be getting a drying westerly wind but with cold air lagging it will still be mild.
Forecast details…
TODAY: Partly to mostly sunny. Highs 25-32. Wind NW 15-25 MPH with higher gusts. Wind chill in the 10s.
TONIGHT: Clear. Lows 15-22. Wind NW 10-20 MPH with higher gusts. Wind chill near to below 10.
WEDNESDAY: Mostly sunny. Highs 33-40. Wind W 5-15 MPH becoming light variable.
WEDNESDAY NIGHT: Clear. Lows 22-29. Wind light SW.
THURSDAY: Increasing clouds. Highs 40-47. Wind S up to 10 MPH.
FRIDAY: Cloudy. Rain likely. Chance of thunderstorms late-day or evening. Temperatures steady in the 40s then rising into the 50s.
SATURDAY: Mostly cloudy to partly sunny. Risk of rain showers early. Temperatures fall from the 50s to the 40s.

DAYS 6-10 (DECEMBER 23-27)
Colder air and a passing disturbance may produce some snow showers during the December 23-24 period. Fair and seasonably cold thereafter.

DAYS 11-15 (DECEMBER 28-JANUARY 1)
Milder to start the period, a weather system bringing some precipitation, rain favored over snow, about December 29, then fair with a seasonable chill returning.

7:32AM

DAYS 1-5 (DECEMBER 17-21)
Low pressure departs today and we transition from lingering showers of rain and snow to dry and windy with falling temperatures. The squeeze between this departing low and an approaching high brings dry weather but wind and a shot of modified arctic cold for Tuesday. High pressure moves overhead with tranquil weather Wednesday, with a very cold start and milder finish. A moderating temperature trend will continue later in the week as the high moves offshore Thursday and low pressure travels from the Tennessee Valley to the upper Ohio Valley Friday, bringing milder air and rain into the region. The Winter Solstice occurs Friday at 5:22PM.
Forecast details…
TODAY: Cloudy with rain/snow showers ending west to east with spotty minor additional snow accumulation possible. Mostly cloudy afternoon. Highs 38-45. Wind NW increasing to 10-20 MPH with higher gusts by late in the day.
TONIGHT: Clearing. Lows 18-25. Wind NW 15-25 MPH with higher gusts. Wind chill near to below 10.
TUESDAY: Mostly sunny. Highs 25-32. Wind NW 15-25 MPH with higher gusts. Wind chill in the 10s.
TUESDAY NIGHT: Clear. Lows 15-22. Wind NW 10-20 MPH with higher gusts. Wind chill near to below 10.
WEDNESDAY: Mostly sunny. Highs 33-40. Wind W 5-15 MPH becoming light variable.
THURSDAY: Increasing clouds. Chance of rain late-night. Lows from the upper 20s to lower 30s early then rising. Highs in the 40s.
FRIDAY: Cloudy. Rain likely. Temperatures steady in the 40s then rising into the 50s.

DAYS 6-10 (DECEMBER 22-26)
Low pressure departs Saturday December 22 with a risk of rain showers early, lingering clouds, increasing wind, a mild start and cooler end. High pressure brings fair and seasonably chilly weather Sunday December 23. Watching for one or two passing disturbances that may bring some snow/mix but no major storminess to the region during the December 24-26 period.

DAYS 11-15 (DECEMBER 27-31)
Timing systems is hard enough when models are performing well at this range, but they are not, so my leaning for today is pattern persistence which would mean a fair and colder start to the period, a brief warm-up with a low pressure and frontal passage around December 29, and a fair weather with a seasonable end-of-December chill returning to wrap up the month, and 2018.

10:09AM

DAYS 1-5 (DECEMBER 16-20)
Low pressure brings wet weather into the region during the course of the day today although a few pockets of sleet are possible at the onset of the rain, then colder air arriving from above and from the northwest will attempt to change rain to sleet/snow, most successfully in higher elevations west and north later this evening and moving southeastward thereafter but as precipitation tapers off. Leaving yesterday’s numbers the same for now. Blustery, colder air in control much of Monday and Tuesday as it dries out. Moderating temperatures at midweek and may get wet by the end of December 20 with the next low pressure system from the west.
Forecast details…
TODAY: Cloudy. Periods of rain increasing from south to north may mix with sleet briefly. Highs 37-43. Wind NE 5-15 MPH interior and 15-25 MPH coast, higher gusts possible especially Cape Cod.
TONIGHT: Overcast. Rain likely South Coast and southeastern MA, rain/mix/snow changing to mostly snow elsewhere. Lows 27-35, coldest north and west. Wind NE to N 10-20 MPH except 15-30 MPH Cape Cod, higher gusts possible.
MONDAY: Cloudy morning with rain possibly ending as mix southeastern MA and RI with no snow accumulation expected, snow/mix ending after accumulation of a coating to 1 inch elsewhere except 1-2 inches higher elevations central MA to southwestern NH. Partly sunny afternoon with a passing snow shower possible. Highs 35-41. Wind N to NW 15-30 MPH with higher gusts possible.
TUESDAY: Mostly sunny. Windy. Lows from the middle 10s to lower 20s. Highs from the middle 20s to lower 30s.
WEDNESDAY: Mostly sunny. Lows from the middle 0s to lower 10s interior, lower to middle 10s coast. Highs in the 30s.
THURSDAY: Increasing clouds. Risk of rain late. Lows in the 20s. Highs in the 40s.

DAYS 6-10 (DECEMBER 21-25)
Transition from mild and showery to cooler and drying during the course of December 21. Seasonable cold December 22-25 with one or two opportunities for light scattered to general precipitation.

DAYS 11-15 (DECEMBER 26-30)
Disturbances bring chances of precipitation around December 26 and December 29 with temperatures near to slightly above normal for this period. This forecast remains low confidence. Hopefully some better clarity will be gained on the 11-15 day period soon.

2:26AM

DAYS 1-5 (DECEMBER 15-19)
A double-barrel low pressure area will impact the region to varying degrees this weekend, the first passing south of the region today. A little very light rain passed through parts of the region overnight but during the day today most of the rain will be right along or just offshore of the South Coast. The second low will get a little closer later Sunday and intensify as it passes southeast of Cape Cod early Monday. This puts the region into a better position to get rain and snow, and where snow occurs some accumulation may take place. See below for preliminary numbers. As the second low pulls away and intensifies, it will pull down a batch of cold air which will be accompanied by gusty winds by a return to dry weather through Tuesday. As high pressure moves overhead it will remain cold but be more tranquil Wednesday. Forecast details…
TODAY: Cloudy with a risk of some light rain near the South Coast morning. Partly sunny afternoon. Highs 48-55. Wind light E to N.
TONIGHT: Mostly cloudy. Lows 32-38. Wind NE up to 10 MPH.
SUNDAY: Mostly cloudy. Late-day rain develops south to north. Highs 37-43. Wind NE 5-15 MPH, higher gusts possible especially Cape Cod.
SUNDAY NIGHT: Overcast. Rain likely South Coast and southeastern MA, rain/mix/snow changing to mostly snow elsewhere. Lows 27-35, coldest north and west. Wind NE to N 10-20 MPH except 15-30 MPH Cape Cod, higher gusts possible.
MONDAY: Cloudy morning with rain possibly ending as mix southeastern MA and RI with no snow accumulation expected, snow/mix ending after accumulation of a coating to 1 inch elsewhere except 1-2 inches higher elevations central MA to southwestern NH. Partly sunny afternoon with a passing snow shower possible. Highs 35-41. Wind N to NW 15-30 MPH with higher gusts possible.
TUESDAY: Mostly sunny. Windy. Lows from the middle 10s to lower 20s. Highs from the middle 20s to lower 30s.
WEDNESDAY: Mostly sunny. Lows from the middle 0s to lower 10s interior, lower to middle 10s coast. Highs in the 30s.

DAYS 6-10 (DECEMBER 20-24)
Milder December 20 into December 21 with a risk of rain showers. Colder during the December 22-24 period with at least one shot at mix/snow from passing disturbances in the polar jet stream.

DAYS 11-15 (DECEMBER 25-29)
Disturbances bring chances of precipitation around December 26 and December 29 with temperatures near to slightly above normal for this period. This forecast is low confidence and intentionally left vague at this time.

7:28AM

DAYS 1-5 (DECEMBER 14-18)
A reprieve from the cold begins today and lasts through the weekend. Dry weather continues today as high pressure drifts offshore. Two low pressure systems will pass south of the region this weekend, the first far enough south so that only the South Coast may see a touch of rain early Saturday, and the second making a closer pass and bringing more wet weather a little further north but with the greatest chance later Sunday of this occurring near and south of I-90. Precipitation in higher elevations may be mixed or snow for a while if it gets far enough north as colder air will be filtering in. By Monday, the second low will be offshore and intensifying to the east of the region and may produce a few rain/snow showers but the bigger impact will be wind and somewhat colder air. Expect a breezy and chilly but dry day December 18 between that offshore storm, slowly moving away, and high pressure moving in from the west.
TODAY: Mostly sunny start, mostly cloudy finish. Highs 39-45. Wind light SE.
TONIGHT: Cloudy. Risk of light rain overnight South Coast. Lows 35-41. Wind E 5-15 MPH.
SATURDAY: Cloudy with a chance of rain in the morning, favoring the South Coast. Partial sun midday and afternoon especially north. Highs 40-46. Wind E 5-15 MPH becoming variable.
SATURDAY NIGHT: Becoming cloudy. Lows 35-41. Wind NE 5-15 MPH.
SUNDAY: Cloudy. Rain likely South Coast by afternoon, may spread to the I-90 corridor late day with some mix possible higher elevations. Highs 37-43 but may fall somewhat later in the day. Wind NE 5-15 MPH except 10-20 MPH and gusty South Coast region.
MONDAY: Mostly cloudy. Rain/snow showers possible and cannot rule out a period of accumulating snow for parts of the region. Windy. Temperatures steady in the 30s to start then may fall to the 20s later.
TUESDAY: Mostly sunny. Breezy. Lows from the upper 10s to lower 20s. Highs in the 30s.

DAYS 6-10 (DECEMBER 19-23)
High pressure will bring fair and tranquil weather December 19. A weak low pressure system from the west will bring a risk of rain showers late December 20 as it is a bit milder and a risk of rain/snow showers as colder air arrives December 21. A disturbance may bring a little snow/mix to the region sometime over the December 22-23 weekend with temperatures close to seasonal averages.

DAYS 11-15 (DECEMBER 24-28)
Low confidence based on uncertain timing of systems but leaning mainly dry and seasonably chilly to start the period then a risk of one or two bouts of unsettled weather later in the period.

7:24AM

DAYS 1-5 (DECEMBER 13-17)
A little battle goes on today as high pressure drifts southward from Canada across New England while a disturbance moves in from the west. Before this disturbance is obliterated by the high pressure area, it may produce a touch of snow over portions of the region. I am hopeful that enough clearing will take place for the region to see one more excellent pass of the International Space Station this evening. The pass will last 6 minutes, from 4:42PM to 4:48PM, northwest to southeast, passing nearly directly overhead at 4:45PM. Also, it appears timing will be good for the peak of the Geminid Meteor Shower tonight, peaking between 11PM and 3AM during which time one may see up to 60 meteors per hour. This shower is one that can produce fireball meteors with long trails. Meteors are best viewed away from city lights. High pressure shifts offshore Friday as low pressure approaches from the southwest. But another bubble of high pressure will be at the ready and will do battle with the approaching larger low pressure system, which will be stretching out south of the region. It now appears that the bulk of the moisture from this system will be held at bay and pushed mainly south of the region through Saturday after an initial episode of wet weather. The old primary low will still have to pass to the south of the region and this will take place during Sunday, as the high pressure area is losing its ability to push things to the south. This should allow more of the moisture into the region at the same time some colder air is filtering in from the north. It remains to be seen how much precipitation will make it in, but by later Sunday much of the region may be getting wet with at least some light rainfall, however that precipitation may be in the form of sleet and/or snow over interior higher elevations if it is extensive enough – a detail to be worked out. It is still possible that most of this moisture is held south of the region as well. By Monday, the old primary low will re-intensify off the coast with rain/snow showers and a blustery breeze. If things come together quickly enough and the low is close enough I cannot rule out a period of snow – another thing to watch for.
Forecast details…
TODAY: Mostly cloudy through early afternoon including a touch of light snow possible in eastern CT, western RI, and central MA. Becoming partly sunny thereafter. Highs 33-39. Wind N to NE up to 10 MPH.
TONIGHT: Mostly clear. Lows 22-28 except 15-22 interior lower elevations. Wind light variable.
FRIDAY: Mostly sunny start, mostly cloudy finish. Highs 39-45. Wind light SE.
FRIDAY NIGHT: Cloudy. Risk of light rain overnight. Lows 35-41. Wind E 5-15 MPH.
SATURDAY: Cloudy. Chance of rain in the morning, favoring southern areas. Highs 40-46. Wind E 10-20 MPH.
SUNDAY: Mostly cloudy. Risk of rain and some higher elevation sleet/snow late-day or night. Temperatures gradually fall into the 30s.
MONDAY: Variably cloudy. Rain/snow showers possible. Windy. Temperatures steady in the 30s.

DAYS 6-10 (DECEMBER 18-22)
A gusty wind and chilly air with a few snow showers possible December 18. More tranquil December 19 as high pressure moves in. Possible rain/snow showers and a slight moderation in temperature mid period before colder air moves back in and another system brings the threat of rain/mix/snow by the very end of the period, although timing is not certain this far out.

DAYS 11-15 (DECEMBER 23-27)
Rain/mix/snow possible early in the period then colder with a few snow showers at times.

7:32AM

DAYS 1-5 (DECEMBER 12-16)
Broad low pressure offshore and high pressure to the north will combine to keep it cold and becoming a little more blustery today along with the risk of some ocean-effect snow showers favoring Cape Cod. Although high pressure takes more control as it sinks southward from eastern Canada Thursday, the remains of a disturbance from the west may bring some cloudiness in at times but no threat of precipitation. By Friday the high will shift offshore and low pressure approaches from the west, bringing a modest warm-up and a chance of rain Friday night into the start of the weekend. the original parent low of this system which will have hung back south of the Great Lakes will likely pass south of the region on Sunday. It could be close enough for some additional wet weather along the South Coast but for now expecting it to stay to the south.
Forecast details…
TODAY: Mostly cloudy to partly sunny. Possible snow showers east coastal areas, favoring MA South Shore and Cape Cod where minor accumulation may occur. Highs 28-35. Wind NE 5-15 MPH.
TONIGHT: Variably cloudy. Lows 12-18. Wind light N.
THURSDAY: Partly sunny. Highs 28-35. Wind light variable.
FRIDAY: Mostly cloudy. Chance of rain at night. Lows in the 20s. Highs in the 40s.
SATURDAY: Cloudy. Periods of rain. Temperatures steady in the 40s.
SUNDAY: Mostly cloudy. Lows in the 30s. Highs from the upper 39s to lower 40s.

DAYS 6-10 (DECEMBER 17-21)
offshore low pressure will bring Gusty winds some cloudiness and the chance of snow showers December 17. Fair, chilly December 18. Slightly milder and watching a disturbance of some kind for a rain/snow shower risk around the middle of the period before cold air returns at the end of the period.

DAYS 11-15 (DECEMBER 22-26)
Near to above normal temperature though not excessively mild, with a couple of opportunities of precipitation events.

7:40AM

DAYS 1-5 (DECEMBER 11-15)
Broad low pressure offshore and high pressure to the north will combine to keep it cold and becoming a little more blustery through Wednesday along with the risk of some ocean-effect snow showers favoring Cape Cod. A disturbance from the west will enhance cloudiness and add some instability for snow shower development a little closer to the rest of the Massachusetts eastern coast tonight into Wednesday. Although high pressure takes more control as it sinks southward from eastern Canada Thursday, the remains of a disturbance from the west may bring some cloudiness in at times but no threat of precipitation. By Friday the high will shift offshore and low pressure approaches from the west, bringing a modest warm-up and a chance of rain Friday night into the start of the weekend.
Forecast details…
TODAY: Sunny except partly sunny Cape Cod and at times to the eastern MA coast. Highs 27-33. Wind N up to 10 MPH.
TONIGHT: Partly to mostly cloudy. East coastal snow flurries possible. Lows 18-24. Wind NE up to 10 MPH.
WEDNESDAY: Mostly cloudy to partly sunny. Possible snow showers east coastal areas, favoring MA South Shore and Cape Cod where minor accumulation may occur. Highs 28-35. Wind NE 5-15 MPH.
WEDNESDAY NIGHT: Variably cloudy. Lows 12-18. Wind light N.
THURSDAY: Partly sunny. Highs 28-35. Wind light variable.
FRIDAY: Mostly cloudy. Chance of rain at night. Lows in the 20s. Highs in the 40s.
SATURDAY: Cloudy. Periods of rain. Temperatures steady in the 40s.

DAYS 6-10 (DECEMBER 16-20)
Low pressure will continue to influence the weather December 16-17 but most of it shifting south and east of the region with some rain/snow showers possible, becoming breezy, and somewhat colder. Fair, chilly December 18. Slightly milder and watching a disturbance of some kind for a rain/snow shower risk later in the period.

DAYS 11-15 (DECEMBER 21-25)
This period will neither feature a big warm up nor major cold, but temperatures likely starting milder than normal then trending toward normal. Odds are against pre-Christmas snowfall, but a couple minor systems may deliver rain and/or snow showers.

7:14AM

DAYS 1-5 (DECEMBER 10-14)
Low pressure that passed south of the region will expand in the western Atlantic early to mid week as high pressure builds in eastern Canada. This will maintain cold air in the region. By Wednesday, onshore flow may result in some snow showers in eastern coastal areas. High pressure will sink southward and be over the region by early Thursday, but then move off to the east as warmer air begins to arrive aloft, then more at the surface by Friday as we get into a more southerly air flow between that high and approaching low pressure from the west. The large scale pattern, currently dominated by the polar jet stream as had been expected to occur this week, will shift as the split flow becomes even more so with the polar jet lifting into Canada late week as milder air pushes the Arctic air out of Canada west to east.
Forecast details…
TODAY: Sunny. Highs 32-38. Wind NW 5-15 MPH.
TONIGHT: Clear. Lows 15-22. Wind N up to 10 MPH.
TUESDAY: Sunny except some afternoon coastal clouds. Highs 27-33. Wind N up to 10 MPH.
TUESDAY NIGHT: Partly to mostly cloudy. East coastal snow flurries possible. Lows 18-24. Wind NE up to 10 MPH.
WEDNESDAY: Mostly cloudy to partly sunny. Possible snow showers east coastal areas, favoring MA South Shore and Cape Cod where minor accumulation may occur. Highs 28-35. Wind NE 5-15 MPH.
THURSDAY: Sun to clouds. Risk of very light snow/mix late. Lows in the 10s. Highs in the 30s.
FRIDAY: Mostly cloudy. Chance of rain at night. Lows in the 20s. Highs in the 40s.

DAYS 6-10 (DECEMBER 15-19)
A low pressure area will impact the region over the weekend but its track is uncertain. Expecting at least some rain and wind Saturday December 15 and gusty breeze with rain/snow showers Sunday December 16 but a lot of this system may be pushed to the south. Generally dry weather expected December 17-19. Temperatures above normal December 15-16 weekend, near normal December 17-18, milder again end of period.

DAYS 11-15 (DECEMBER 20-24)
This period will neither feature a big warm up nor major cold, but temperatures likely starting milder than normal then trending toward normal. Odds are against pre-Christmas snowfall, but a couple minor systems may deliver rain and/or snow showers as it stands now.

8:14AM

DAYS 1-5 (DECEMBER 9-13)
The cold and dry pattern will be with us for a while longer, but there are changes on the horizon which will present clues of their arrival before the end of this 5-day period. First, we have high pressure protecting the region from a storm which will pass well south of New England over the next couple days, but at this storm blows up offshore it will expand enough that its interaction with high pressure to the north of the region will turn the wind northeast by Wednesday. This, combined with some warming getting start above us at the same time, will create more cloudiness and perhaps some flakes of snow in the area. Not a big storm but something to watch as any time ocean-effect snow is possible there can be at least small areas of greater impact. But that’s a few days away and I have time to focus on it. In the mean time, just cold and dry. That milder air arriving aloft by Wednesday will finally be felt at the surface by the end of this period.
Forecast details…
TODAY: Sunny. Highs 30-36. Wind W up to 10 MPH.
TONIGHT: Clear. Lows 15-22. Wind light W.
MONDAY: Sunny. Highs 34-40. Wind W up to 10 MPH.
MONDAY NIGHT: Clear. Lows 12-18. Wind NW 5-15 MPH.
TUESDAY: Sunny. Highs 26-33. Wind N 5-15 MPH.
WEDNESDAY: Mostly cloudy. Spotty very light snow possible interior especially higher elevations, and scattered snow showers in the eastern coastal plain. Lows in the 20s. Highs from the middle 30s to lower 40s.
THURSDAY: Partly sunny. Lows from the upper 20s to lower 30s. Highs in the 40s.

DAYS 6-10 (DECEMBER 14-18)
A low pressure system will impact the region from December 14 through 16 with cloudiness and possible rain showers or areas of light rain December 14, the greatest chance of rain and wind for at least a portion of December 15, and gusty winds with rain/snow showers December 16. Windy, colder December 17 with possible snow showers otherwise drier then fair and chilly December 18 behind storm system.

DAYS 11-15 (DECEMBER 19-23)
Milder again with possible rain showers in the December 19-20 period for the final two days of astronomical autumn, then a transition to a more seasonable chill and will have to watch a disturbance for possible mix/snow showers at some point December 22-23.