DAYS 1-5 (DECEMBER 19-23)

Upper level low pressure may produce a couple rain and snow showers today as it swings through the region from west to east. A northerly air flow between high pressure to the west and low pressure off the coast will bring fair and seasonably chilly weather Wednesday through Friday. Another disturbance moves into the region on Saturday and may produce some insignificant light snow, except snow or rain near the South Coast.

TODAY: Variably cloudy. Chance of rain showers except mix/snow showers possible in some higher elevations. Highs 38-45. Wind W 5-15 MPH.

TONIGHT: Partly cloudy. Lows 22-29. Wind WNW 10-20 MPH.

WEDNESDAY: Mostly sunny. Highs 37-44. Wind NW 5-15 MPH.

WEDNESDAY NIGHT: Mostly clear. Lows 21-28. Wind N 5-15 MPH.

THURSDAY: Mostly sunny. Highs 36-43. Wind N-NE 5-15 MPH.

THURSDAY NIGHT: Partly cloudy. Lows 21-28. Wind N-NE 5-15 MPH.

FRIDAY: Partly sunny. Highs 35-42. Wind N-NE 5-15 MPH.

FRIDAY NIGHT: Partly cloudy. Lows 20-27. Wind N up to 10 MPH.

SATURDAY: Variably cloudy. A touch of light snow and rain possible. Highs 35-42. Wind variable up to 10 MPH.

DAYS 6-10 (DECEMBER 24-28)

Christmas Eve / Christmas Day feature fair, milder weather with high pressure in control. Watch for a frontal boundary and a rain/snow shower chance December 26. Potential widespread precipitation event later in the period from low pressure associated with the subtropical jet stream.

DAYS 11-15 (DECEMBER 29 – JANUARY 2)

Trend back to mainly dry weather at least through mid period. No major cold.

DAYS 1-5 (DECEMBER 18-22)

A stormy Monday starts this week before Christmas. A well-advertised storm system will move up from the south, with the center of low pressure basically traveling up the Connecticut River Valley during this afternoon. Steadiest rain this morning becomes more showery this afternoon with a general 1 to 3 inch rainfall for the region. Strongest wind gusts from the southeast and south will be around through early afternoon before the wind shifts to the southwest and, while still strong and gusty, the top gusts should be behind us. Coastal flooding will be minor to moderate around the high tide time at midday, most notable along the South Coast. As the storm moves away, we stay breezy into tonight, but dry weather returns. Overnight temperatures should stay above freezing so I’m not concerned about any freezing of leftover puddles and surfaces that don’t dry out quickly. Tuesday, we’ll have upper level low pressure crossing the region, with cooler weather and a chance of a few rain and snow showers, but no big deal. The weather Wednesday through Friday will be governed by high pressure with dry and seasonably chilly weather. A blocking pattern will result in low pressure sitting offshore to our east, but indications are that other than the wind turning more northeast Thursday and/or Friday, and some coastal cloud potential, that the system will not have any significant impact on our weather.

TODAY: Overcast through midday with rain, heavy at times, and a slight chance of thunderstorms. Mostly cloudy with additional rain showers during the afternoon but breaks of sun are also possible. Highs 57-64. Wind SE 15-35 MPH with gusts above 40 MPH inland and above 50 MPH coastal areas, shifting to S.

MONDAY NIGHT: Variably cloudy. Lows 34-41. Wind SW 15-25 MPH, higher gusts.

TUESDAY: Variably cloudy. Chance of rain showers except mix/snow showers possible in some higher elevations. Highs 38-45. Wind W 10-20 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 22-29. Wind WNW 10-20 MPH.

WEDNESDAY: Partly cloudy. Highs 37-44. Wind NW 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows 21-28. Wind N 5-15 MPH.

THURSDAY: Mostly sunny to partly cloudy. Highs 36-43. Wind N-NE 5-15 MPH.

THURSDAY NIGHT: Partly cloudy. Lows 21-28. Wind N-NE 5-15 MPH.

FRIDAY: Partly sunny. Highs 35-42. Wind N-NE 5-15 MPH.

DAYS 6-10 (DECEMBER 23-27)

Blocking breaks down and a more zonal flow takes over the pattern. Disturbance may bring a few rain and snow showers on December 23. High pressure brings fair, milder weather for Christmas Eve / Christmas Day. Watching for a more significant precipitation event, probably rain, later in the period as low pressure approaches from the southwest.

DAYS 11-15 (DECEMBER 28 – JANUARY 1)

Storm system may be nearby early in the period then quieter again. No major cold.

DAYS 1-5 (DECEMBER 17-21)

The last of high pressure keeps us rain-free during the daylight hours today, but any sun you may see this morning is a bonus as the clouds will take over for an overcast sky. A fast-moving low pressure area is set to bring a wind and rain event to our region tonight and Monday. The set-up looks the same as described in yesterday’s blog post. The low center will travel just west of our area – generally up the Hudson Valley – with moderate to strong winds from the southeast eventually shifting to the south then southwest as the low goes by, and a trough extending southward from it swings through. Heaviest rainfall takes place during the first 12 hours of Monday, with a potential dry slot and cloud breaks before the trough swings through with another batch of rain showers. Still cannot rule out thunder but that’s a low probability. The bigger impacts with this system will be wind with gusts above 40 MPH inland and above 50 MPH near the coast, potentially over 60 MPH over Cape Cod, and heavy rainfall of 1 to 3 inches with local flooding in prone areas, low visibility during heaviest rain, and some coastal flooding, especially South Coast, focused around Monday’s high tide time. After this system departs, upper level low pressure keeps it somewhat unsettled Tuesday with lots of clouds and a few rain and snow showers. Midweek will see dry and seasonably chilly weather between high pressure to our west and an evolving offshore low pressure area.

TODAY: Partial sun into mid morning especially I-95 belt eastward, otherwise cloudy. A patch of drizzle or an isolated rain shower possible in the afternoon. Highs 47-54. Wind E 5-15 MPH.

TONIGHT: Cloudy. Rain arrives, may be heavy at times overnight. Temperatures rise to 50-57. Wind SE increasing to 15-35 MPH with higher gusts, especially coast.

MONDAY: Overcast through midday with rain, heavy at times, and a slight chance of thunderstorms. Mostly cloudy with additional rain showers during the afternoon but breaks of sun are also possible. Highs 57-64. Wind SE 15-35 MPH with gusts above 40 MPH inland and above 50 MPH coastal areas, shifting to S.

MONDAY NIGHT: Variably cloudy. Passing rain showers possible evening. Lows 37-44. Wind SW 15-25 MPH, higher gusts.

TUESDAY: Variably cloudy. Chance of rain showers except mix/snow showers possible in some higher elevations. Highs 38-45. Wind W 15-25 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 22-29. Wind WNW 10-20 MPH.

WEDNESDAY: Partly cloudy. Highs 37-44. Wind NW 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows 21-28. Wind N 5-15 MPH.

THURSDAY: Mostly sunny. Highs 36-43. Wind N 5-15 MPH.

DAYS 6-10 (DECEMBER 22-26)

A blocking pattern keeps low pressure over the ocean to our east and high pressure just to the west until about Christmas Day. A weak disturbance or two may produce a touch of light precipitation. Will watch the end of the period for things to un-block in the pattern and a new low pressure system approaching from the southwest with a greater threat of precipitation.

DAYS 11-15 (DECEMBER 27-31)

A little more active outlook in this time frame with more west to east flow and the ability of jet stream disturbances to move into the Northeast. Overall pattern still appears mild with no major cold in sight.

DAYS 1-5 (DECEMBER 16-20)

An area of high pressure keeps our weather fair today. A quick-moving, potent low pressure area that originated in the Gulf of Mexico will fly north northeastward as an inside runner storm – one that has an inland track – bringing us a bout of wind and rain Sunday night into Monday. Ahead of it, a moistening east to southeast air flow will send clouds in tonight into Sunday, but other than a patch of drizzle or a couple “in-advance” rain showers, we won’t see much in the way of rainfall until after dark Sunday, with the most solid rain area coming through during the first 10 to 12 hours of Monday. As low pressure tracks west of the WHW forecast area, a dry slot will shut off the main rainfall and we may even see some breaks in the clouds for a while Monday afternoon before a trough of low pressure trailing the main low center swings through with more showery rainfall Monday evening. This system exits overnight and on Tuesday we’re left with upper level low pressure swinging through the region. This will keep it unsettled with a chance of additional rain showers, possibly mixed with snow in higher elevations as colder air starts to move in. By Wednesday, we’ll be in a dry northwesterly flow between evolving low pressure well offshore and high pressure nudging in from the Ohio Valley / Great Lakes.

TODAY: Mostly sunny. Highs 45-52. Wind N 5-15 MPH shifting to E.

TONIGHT: Clouds increase. Lows 32-39. Wind E under 10 MPH.

SUNDAY: Cloudy. A patch of drizzle or an isolated rain shower possible in the afternoon. Highs 47-54. Wind E 5-15 MPH.

SUNDAY NIGHT: Cloudy. Rain arrives, may be heavy at times overnight. Temperatures rise to 50-57. Wind SE increasing to 15-35 MPH with higher gusts, especially coast.

MONDAY: Overcast through midday with rain, heavy at times, and a slight chance of thunderstorms. Mostly cloudy with additional rain showers during the afternoon but breaks of sun are also possible. Highs 57-64. Wind SE 15-35 MPH with gusts above 40 MPH inland and above 50 MPH coastal areas, shifting to SW.

MONDAY NIGHT: Variably cloudy. Passing rain showers possible evening. Lows 37-44. Wind SW-W 15-25 MPH, higher gusts.

TUESDAY: Variably cloudy. Chance of rain showers except mix/snow showers possible in some higher elevations. Highs 38-45. Wind W 15-25 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 22-29. Wind WNW 10-20 MPH.

WEDNESDAY: Partly cloudy. Highs 37-44. Wind NW 5-15 MPH.

DAYS 6-10 (DECEMBER 21-25)

A blocking pattern keeps low pressure over the ocean to our east and high pressure just to the west from the Winter Solstice to Christmas Day. This is generally a dry pattern with the only chance of precipitation limited to a few rain/mix/snow showers from weak disturbance or two moving through.

DAYS 11-15 (DECEMBER 26-30)

A little more active outlook in this time frame with more west to east flow and the ability of jet stream disturbances to move into the Northeast. Overall pattern still appears mild with no major cold in sight.

DAYS 1-5 (DECEMBER 15-19)

High pressure continues its domination of our weather through Saturday with fair weather and moderating temperatures. Low pressure coming out of the Gulf of Mexico will accelerate north northeastward, spreading clouds in on Sunday followed by a bout of rain and wind Sunday night and Monday, before it departs Monday night. Tuesday, upper level low pressure will still be over us but colder air will have returned so there can be some rain and snow showers, but for the most part it looks drier and chilly again at that time. More details about rainfall amounts and wind for the upcoming storm in the next update.

TODAY: Mostly sunny. Highs 42-49. Wind SW 5-15 MPH.

TONIGHT: Mostly clear. Lows 23-30. Wind SW up to 10 MPH.

SATURDAY: Mostly sunny. Highs 44-51. Wind SW 5-15 MPH.

SATURDAY NIGHT: Mostly clear. Lows 27-34. Wind W under 10 MPH.

SUNDAY: Increasing clouds. Highs 47-54. Wind SE 5-15 MPH.

SUNDAY NIGHT: Cloudy. Rain arrives. Lows 40-47. Wind SE 10-20 MPH, higher gusts especially coastal areas.

MONDAY: Cloudy. Rain likely. Highs 48-55. Wind SE-S 15-25 MPH, higher gusts especially coastal areas.

MONDAY NIGHT: Mostly cloudy with additional rain showers and a possible thunderstorm early, then variably cloudy. Lows 37-44. Wind SW-W 15-25 MPH, higher gusts.

TUESDAY: Variably cloudy. Chance of rain and snow showers. Highs 38-45. Wind W-NW 15-25 MPH, higher gusts.

DAYS 6-10 (DECEMBER 20-24)

Trend is for mainly dry weather with low pressure offshore and high pressure to the west, with a generally north to northwest flow of seasonably chilly weather. A disturbance somewhere in there may cause a few snow/mix showers.

DAYS 11-15 (DECEMBER 25-29)

White Christmas odds remain below climatology. Pattern get more active later in the period with higher odds for precipitation.

DAYS 1-5 (DECEMBER 14-18)

High pressure provides quiet mid December weather for the next few days, well into the weekend in fact, with one cold day today, then a moderation. Late in the weekend we’ll see clouds arrive ahead of low pressure which is expected to send its moisture our way for a bout of rain and some wind Sunday night and especially Monday. The sensible weather details still have to be worked out, but the overall idea is a low pressure area that will intensify and mature well to our south, but elongate and move its way up here. What is high confidence is that the air will be too mild to support any frozen precipitation, so we’re looking at a rain event.

TODAY: Sunny to partly cloudy. Highs 32-39. Wind W 5-15 MPH, higher gusts.

TONIGHT: Partly cloudy. Lows 17-24. Wind W up to 10 MPH.

FRIDAY: Mostly sunny. Highs 42-49. Wind SW 5-15 MPH.

FRIDAY NIGHT: Mostly clear. Lows 23-30. Wind SW up to 10 MPH.

SATURDAY: Mostly sunny. Highs 44-51. Wind SW 5-15 MPH.

SATURDAY NIGHT: Mostly clear. Lows 27-34. Wind W under 10 MPH.

SUNDAY: Increasing clouds. Highs 47-54. Wind SE 5-15 MPH.

SUNDAY NIGHT: Cloudy. Rain arrives. Lows 40-47. Wind SE 10-20 MPH, higher gusts especially coastal areas.

MONDAY: Cloudy. Rain likely. Highs 48-55. Wind SE-S 15-25 MPH, higher gusts especially coastal areas.

DAYS 6-10 (DECEMBER 19-23)

The large scale pattern features a polar jet stream displaced far to the north and generally out of the picture while there is a blocky southern jet stream pattern. This keeps it somewhat unsettled here early in this period, with additional rain that may transition to rain/snow showers as it cools down and low pressure eventually pulls to the north and east. A slightly colder north to northeast flow mid to late period may result in periods of clouds and ocean effect snow/mix showers. Much lower confidence that far in advance.

DAYS 11-15 (DECEMBER 24-28)

White Christmas odds remain below climatology. Overall drier pattern here but watch for a weaker system around the middle of the period with a minor precipitation threat. No major cold.

DAYS 1-5 (DECEMBER 13-17)

A cold front crosses the region later today with a few snow showers possible in the region, favoring southern NH and northern MA. Otherwise, we stay in a dry pattern into the coming weekend. The coldest day of this stretch will be Thursday, and a moderation will follow. When we get to Sunday, we’ll be watching low pressure down the Atlantic Coast. Guidance is in good agreement that a large low pressure system will get going down there, but the details of its evolution are a little fuzzy still. My early idea is for a system that matures pretty far south and while the primary low sits down there longer, it sends a plume of moisture up the coast and that will be our best chance of getting some rainfall up here. Based on moderate confidence current timing I’d expect this to be late Sunday. (More in the 6-10 day section.)

TODAY: Sunny start, then a sun/cloud mix. A passing snow shower possible this afternoon, especially north of I-90. Highs 36-43. Wind W 5-15 MPH, higher gusts, shifting to NW by late in the day.

TONIGHT: Partly cloudy early with a brief snow shower possible, mainly northern MA and southern NH, then clearing. Lows 21-28. Wind WNW 5-15 MPH, higher gusts.

THURSDAY: Sunny to partly cloudy. Highs 32-39. Wind W 5-15 MPH, higher gusts.

THURSDAY NIGHT: Mostly clear. Lows 15-22. Wind W up to 10 MPH.

FRIDAY: Mostly sunny. Highs 42-49. Wind SW 5-15 MPH.

FRIDAY NIGHT: Mostly clear. Lows 23-30. Wind SW up to 10 MPH.

SATURDAY: Mostly sunny. Highs 44-51. Wind SW 5-15 MPH.

SATURDAY NIGHT: Mostly clear. Lows 27-34. Wind W under 10 MPH.

SUNDAY: Increasing clouds. Chance of rain late-day or night. Highs 45-52. Wind SE 5-15 MPH.

DAYS 6-10 (DECEMBER 18-22)

While there is uncertainty in the eventual evolution of low pressure on the East Coast, and some guidance showing a vastly different scenario, my early meteorological opinion is that the broad low pressure system will be shunted eastward after the initial push of wet weather goes by our area. This would lead to a return to dry and seasonable to mild weather for much of next week. Not a high-confidence forecast, but the leaning at this time, and to be updated as things become more clear.

DAYS 11-15 (DECEMBER 23-27)

Fairly dry, seasonable to mild pattern leading up to about Christmas. Possible unsettled weather late in the period. White Christmas chances are lower than climatology for southeastern New England in the expected pattern, but will watch for any “surprises”.

DAYS 1-5 (DECEMBER 12-16)

A quiet weather pattern is ours over the next 5 days. We’ll have mainly dry weather with the only precipitation chance being a possible snow shower with a weak cold front scooting across the region during Wednesday. Temperatures trend a little colder through Thursday, before moderating late in the week.

TODAY: Mostly sunny to partly cloudy. Highs 38-45. Wind W 5-15 MPH.

TONIGHT: Partly cloudy. Lows 25-32. Wind W 5-15 MPH.

WEDNESDAY: Partly sunny. A passing snow shower possible. Highs 37-44. Wind W 5-15 MPH, higher gusts.

WEDNESDAY NIGHT: Partly cloudy then clearing. Lows 22-29. Wind WNW 5-15 MPH, higher gusts.

THURSDAY: Sunny to partly cloudy. Highs 32-39. Wind W 5-15 MPH, higher gusts.

THURSDAY NIGHT: Mostly clear. Lows 17-24. Wind W up to 10 MPH.

FRIDAY: Mostly sunny. Highs 42-49. Wind SW 5-15 MPH.

FRIDAY NIGHT: Mostly clear. Lows 23-30. Wind SW up to 10 MPH.

SATURDAY: Mostly sunny. Highs 44-51. Wind SW 5-15 MPH.

DAYS 6-10 (DECEMBER 17-21)

Low pressure to the south spreads clouds our way by the end of the weekend and may send some wind/rain into the region for a brief time early next week, depending on its track, before dry weather makes a return. Temperatures variable but averaging slightly above normal.

DAYS 11-15 (DECEMBER 22-26)

Fairly dry, seasonable to mild pattern leading up to about Christmas. Possible unsettled weather late in the period. White Christmas chances are lower than climatology for southeastern New England in this pattern.

DAYS 1-5 (DECEMBER 11-15)

A cold front will pull offshore to the east by mid morning, putting an end to the rain and wind event. The strongest winds ended up more confined to Cape Cod and were very limited elsewhere, which is good. Heavy rainfall has resulted in some street and minor stream flooding, but in general with the lack of heavier rainfall events recently, the drainage system took it well, other than parking lot and road drains that may have been debris-blocked. Watch for ponding of water and additional heavy rain early on if you are about to travel mainly from I-95 eastward, but these issues quickly go away. The rest of today will see a drying trend with a gusty breeze and a chill-down. But this is not arctic air moving in behind this front, so just chilly and not “wicked cold”. The weather pattern for the rest of the week will be quiet. A broad low pressure trough will keep it chilly through midweek. A reinforcing cold front swings through Wednesday with a possible flurry, otherwise dry weather prevails. The trough exits and a flat upper ridge arrives to initiate a temperature moderation at the end of the week.

TODAY: Cloudy into mid morning with rain exiting from west to east. Sun/cloud mix late morning on with a passing afternoon snow shower possible favoring higher elevations central MA and southwestern NH. Highs 40-47 except 48-55 Cape Cod early before falling. Wind S 15-30 MPH with higher gusts over Cape Cod early, otherwise W 10-20 MPH with higher gusts.

TONIGHT: Partly cloudy. Lows 22-29. Wind chill below 20. Wind W 10-20 MPH, higher gusts, diminishing overnight.

TUESDAY: Mostly sunny to partly cloudy. Highs 38-45. Wind W 5-15 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 25-32. Wind W 5-15 MPH.

WEDNESDAY: Partly sunny. A passing snow shower possible. Highs 37-44. Wind W 5-15 MPH, higher gusts.

WEDNESDAY NIGHT: Partly cloudy then clearing. Lows 22-29. Wind WNW 5-15 MPH, higher gusts.

THURSDAY: Sunny to partly cloudy. Highs 32-39. Wind W 5-15 MPH, higher gusts.

THURSDAY NIGHT: Mostly clear. Lows 17-24. Wind W up to 10 MPH.

FRIDAY: Mostly sunny. Highs 42-49. Wind SW 5-15 MPH.

DAYS 6-10 (DECEMBER 16-20)

Overall pattern is expected to feature a westerly flow with near to above normal temperatures and below normal precipitation heading through the final days of astronomical autumn. Southern jet stream moisture is expected to remain far to the south, with an ocean storm staying well offshore mid to late period. A weaker disturbance or two can swing through here via the Great Lakes and cause minor rain/snow showers a couple times with short-lived colder shots in an overall milder pattern.

DAYS 11-15 (DECEMBER 21-25)

A similar but possibly slightly more amplified pattern heading from the Winter Solstice to Christmas. No indications of major storminess. We do have a shot at a quick precipitation event or two. Temperatures are likely to be variable, but average near to above normal for the period.

DAYS 1-5 (DECEMBER 10-14)

We haven’t had many solid rain events since September, and we’ve had very few wind events this year. Later today to early Monday we get both! This event is being driven by a strong trough of low pressure swinging through the eastern US, and plentiful moisture flowing northward along a frontal boundary that will be moving fairly slowly across our region. A couple waves of low pressure will be moving up along this front, keeping its movement slow, and increasing the amount of rainfall we can see from the system. We have a slow beginning to the system, with just a cloudy sky and areas of fog for this morning before rainfall, initially in the form of quick-moving showers, moves in from west to east (elements moving south to north). Tonight it’s a much more widespread band of rain with embedded downpours and even possible thunder. Finally, a stronger low center get going and as it rapidly intensifies it will pull the front through and offshore, putting an end to the rain and strongest wind during Monday morning. Impacts from this system include potential damaging wind gusts, and some resultant power outages, with highest chance of that east of I-95, some coastal flooding at high tide time Monday morning (primary threat window 4 a.m. to 8 a.m.), and areas of flooding from heavy rainfall on roads, poor drainage areas, and small streams, with the highest chance west of I-95 where where rainfall amounts of 2 to 4 inches will be common (lesser rain expected to the east of there). By midday Monday, the rain is exiting (or already gone), and we’ll see some clearing, drying, and a temperature fall. The good news is most surfaces will dry adequately before temperatures drop below freezing Monday night. However, any remaining standing water will freeze, so keep this in mind if it’s a factor in your walking or driving travel Monday night / early Tuesday. Any snow from this system? That will be mainly in the mountains to our west and northwest, but a few snow showers can make their way into the higher elevations of central MA and southwestern NH as the colder air arrives during Monday afternoon and evening. After this event, the weather pattern is quiet through midweek with seasonably chilly and dry weather. A weak cold front will swing through the region Wednesday with little fanfare.

TODAY: Cloudy. Rain showers possible in the afternoon, especially I-95 belt westward. Highs 56-63. Wind S 5-15 MPH morning, 15-25 MPH afternoon, higher gusts.

TONIGHT: Cloudy with rain and embedded thunderstorms. Lows 50-57. Wind S 15-30 MPH, higher gusts – above 40 MPH inland, above 50 MPH coastal areas.

MONDAY: Cloudy into mid morning with rain exiting from west to east. Sun/cloud mix late morning on with a passing afternoon snow shower possible favoring higher elevations central MA and southwestern NH. Highs 52-59 early, then cooling into and through 40s. Wind W 15-25 MPH, higher gusts.

MONDAY NIGHT: Partly cloudy. Lows 22-29. Wind chill below 20. Wind W 10-20 MPH, higher gusts, diminishing overnight.

TUESDAY: Mostly sunny to partly cloudy. Highs 38-45. Wind W 5-15 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 25-32. Wind W 5-15 MPH.

WEDNESDAY: Partly sunny. Highs 38-45. Wind W 5-15 MPH, higher gusts.

WEDNESDAY NIGHT: Partly cloudy then clearing. Lows 22-29. Wind WNW 5-15 MPH, higher gusts.

THURSDAY: Sunny to partly cloudy. Highs 35-42. Wind W 5-15 MPH.

DAYS 6-10 (DECEMBER 15-19)

Latest indications are that any additional storminess mid to late period stays mostly to the south, but may be a close call. Overall pattern is dry with no temperature extremes.

DAYS 11-15 (DECEMBER 20-24)

Other than 1 or 2 fairly minor systems the overall pattern looks fairly quiet with no major temperature extremes.

DAYS 1-5 (DECEMBER 9-13)

This weekend will end very differently than it begins. Today we have a tranquil and mild day as high pressure slides offshore, with a sun/cloud mix giving way to more clouds. A sharp low pressure trough and associated strong cold front will move eastward into the region during Sunday and Sunday night. This system is going to bring a surge of warmer air and a fairly short-duration but high impact wind/rain event to the region Sunday night. The first rain showers move into the region Sunday afternoon, but a more general band of rain, some heavy, with potential embedded thunder, will cross the region Sunday night from west to east, while the individual elements are moving northward. The strongest wind and heaviest rain will occur in the warm sector ahead of the cold front, which will also have a wave of low pressure develop near the northern Mid Atlantic and strengthen rapidly as it moves up across our region in the early hours of Monday. This prolongs the heavy rain enough for a general 1-3 inches, with heaviest expected to be west of I-95 where some flooding of streams and poor drainage areas is most likely. Ponding of water on roadways can be a driving hazard anywhere during the event. The wind gusts will be strongest in areas east of I-95, particularly coastal locations, where there is the greatest risk of tree damage and isolated to scattered power outages. As the cold front is pulled quickly eastward after the low pressure wave moves north of our latitude, we’ll see a fairly quick shut-off to the rainfall, a wind shift to the west and an end to the strongest wind. We’ll also experience a steady temperature fall on Monday from very mild early morning highs to a more seasonably chilly finish. The arrival of cold air will be met with drying, but there will be enough moisture wrapping around the back side of the strengthening and departing low pressure area to cause some snow showers, mainly over higher elevations of central MA to southwestern NH Monday afternoon and evening. Gusty winds continue through Monday evening as we get a quick shot of cold air. Tuesday and Wednesday will feature fair, dry weather and more seasonably chilly air with a westerly flow. A cold front will approach from a weak low traveling eastward to the north of our region on Wednesday, which will feature more clouds than Tuesday.

TODAY: Sun/cloud mix – clouds win out later. Highs 44-51. Wind SW 5-15 MPH.

TONIGHT: Mostly cloudy. Lows 35-42. Wind S 5-15 MPH.

SUNDAY: Cloudy. Rain showers possible in the afternoon, especially I-95 belt westward. Highs 56-63. Wind S 5-15 MPH morning, 15-25 MPH afternoon, higher gusts.

SUNDAY NIGHT: Cloudy with rain and embedded thunderstorms. Lows 50-57. Wind S 15-30 MPH, higher gusts – above 40 MPH inland, above 50 MPH coastal areas.

MONDAY: Cloudy into mid morning with rain exiting from west to east. Sun/cloud mix late morning on with a passing afternoon snow shower possible favoring higher elevations central MA and southwestern NH. Highs 52-59 early, then cooling to 40s. Wind W 15-25 MPH, higher gusts.

MONDAY NIGHT: Partly cloudy. Lows 22-29. Wind chill below 20. Wind W 10-20 MPH, higher gusts, diminishing overnight.

TUESDAY: Mostly sunny to partly cloudy. Highs 38-45. Wind W 5-15 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 25-32. Wind W 5-15 MPH.

WEDNESDAY: Partly sunny. Highs 38-45. Wind W 5-15 MPH, higher gusts.

DAYS 6-10 (DECEMBER 14-18)

Fair, seasonably cool followed by a slight milder trend December 14-16. Watching December 17-18 period for potential impact from low pressure with a precipitation chance – early idea is rain favored over frozen precip.

DAYS 11-15 (DECEMBER 19-23)

No temperature extremes. Overall west to northwest flow and generally dry weather, but may need to watch for a system with potential precipitation near the end of this period.

DAYS 1-5 (DECEMBER 8-12)

High pressure over the region will slide offshore through Saturday with fair weather and a milder trend. A low pressure trough swinging into the Northeast will propel a strong frontal boundary across our region later Sunday through early Monday, parented by low pressure passing to our northwest. A surge of warmer air and increasing wind ahead of this system culminates in a band of moderate to heavy rain with possible thunder, and strong wind gusts from the south. As the front crosses the region and exits to the east near or shortly after sunrise Monday, then rain will abruptly shut off and the wind, which will drop off slightly, will shift to the west. During the day Monday we can expect a cool-down with gusty winds while we dry out. Cold advection snow showers should remain generally west and northwest of our region, but I can’t rule out a stray snow flurry later in the day in the hilly terrain of north central MA through southwestern NH. A quick and sharp shot of cold will be felt along with wind chill Monday night. Tuesday, except fair weather and a seasonable chill as we’ll be influenced by high pressure to our southwest.

TODAY: Partly to mostly sunny. Highs 38-45. Wind SW up to 10 MPH.

TONIGHT: Partly to mostly cloudy. Lows 28-35. Wind SW up to 10 MPH.

SATURDAY: Partly sunny. Highs 43-50. Wind SW 5-15 MPH.

SATURDAY NIGHT: Mostly cloudy. Lows 35-42. Wind S 5-15 MPH.

SUNDAY: Mostly cloudy. Highs 56-63. Wind S 10-20 MPH with higher gusts.

SUNDAY NIGHT: Cloudy with rain and embedded thunderstorms. Lows 50-57. Wind S 15-30 MPH, higher gusts – above 40 MPH inland, above 50 MPH coastal areas.

MONDAY: Cloudy at dawn with rain exiting west to east early morning, then a sun/cloud mix. A late-day snow shower possible north central MA / southwestern NH. Highs 52-59 early, then cooling to 40s. Wind W 15-25 MPH, higher gusts.

MONDAY NIGHT: Partly cloudy. An early evening snow shower possible north central MA / southwestern NH. Lows 22-29. Wind chill below 20. Wind W 10-20 MPH, higher gusts, diminishing overnight.

TUESDAY: Mostly sunny to partly cloudy. Highs 38-45. Wind WSW 5-15 MPH.

DAYS 6-10 (DECEMBER 13-17)

A brief rain or snow shower possible December 13 as a cold front moves through. Fair and seasonable mid period. Watching for the return of clouds and possible precipitation end of the period but low confidence.

DAYS 11-15 (DECEMBER 18-22)

Up and down temps, no extremes, and a mainly dry pattern during this period with a mostly west to northwest flow dominating the region.

DAYS 1-5 (DECEMBER 7-11)

A north-to-south high pressure elongation, axis just to our west today, will drift eastward across the region by tonight and then off to the east Friday into the weekend. A disturbance in a northwesterly flow aloft between 2 stronger centers of the high will drive lots of high level cloudiness across our sky today to limit the sun at times, and we’ll have a very chilly day too. A milder trend begins Friday and continues as we head into and through the weekend. Fair weather continues Friday through Saturday, but we’ll see more in the way of cloudiness Saturday as a trough approaches from the west. This trough is set to swing across our region Sunday and early Monday. Associated with it will be a strong frontal boundary. The parent low of this front will pass to our northwest late Sunday through early Monday. Ahead of the front we can expect an increasing southerly air flow and a tightening pressure gradient means we’ll see a decent wind event. A few showers can come through the region Sunday afternoon, but the main band of rain with the frontal boundary will come through here Sunday night, maybe slowed slightly by an additional wave of low pressure on the front, but once main low pressure is north of our region, the front will swing through more quickly and offshore by early Monday, causing a wind shift to west, but still strong wind potential for a good part of the day Monday, even as we quickly return to dry weather with a chill-down.

TODAY: Sun often filtered by lots of high clouds. Highs 33-40. Wind NW up to 10 MPH, becoming variable.

TONIGHT: Clearing. Lows 18-25. Wind variable under 10 MPH.

FRIDAY: Mostly sunny. Highs 38-45. Wind SW up to 10 MPH.

FRIDAY NIGHT: Partly cloudy. Lows 28-35. Wind SW up to 10 MPH.

SATURDAY: Partly sunny. Highs 43-50. Wind SW 5-15 MPH.

SATURDAY NIGHT: Mostly cloudy. Lows 35-42. Wind S 5-15 MPH.

SUNDAY: Mostly cloudy. Chance of a few rain showers. Highs 56-63. Wind S 10-20 MPH with higher gusts.

SUNDAY NIGHT: Cloudy with rain and embedded thunderstorms. Lows 50-57. Wind S 15-30 MPH, higher gusts.

MONDAY: Sun/cloud mix. Temperatures fall into 40s. Wind W 15-30 MPH, higher gusts.

DAYS 6-10 (DECEMBER 12-16)

Watch for a minor system to bring clouds / light precipitation around the middle of next week but no major storminess indicated. Temperatures variable, averaging near to above normal.

DAYS 11-15 (DECEMBER 17-21)

Best chance of unsettled weather is mid period, but no major storms indicated. Temperatures near to above normal.

DAYS 1-5 (DECEMBER 6-10)

Two days of cold will be followed by a warm up Friday through the weekend. A short-duration snow shower event this morning will be focused in eastern MA and parts of southeastern NH, and into RI as well. This will be the result of a northeasterly air flow at the surface, an inverted trough off low pressure well to our southeast, and a weak disturbance passing through above us. This afternoon, we’ll be in a drier northwesterly air flow which will then last through Thursday, as a north-south elongated high pressure area approaches from the west. A weak warm front will pass by uneventfully Thursday night, and as high pressure slides offshore we’ll start a warm-up on Friday which will last through the weekend. Fair weather will be with us Friday and Saturday. A vigorous trough and frontal system trailing a low set to pass to our north will approach later Sunday. We’ll see the wind pick up ahead of this, and a period of strong wind and heavy rain / possible thunder is anticipated as the front crosses the region during Sunday night. More detail can be given for that event as we get closer to its occurrence.

TODAY: Cloudy this morning with snow showers likely from the I-95 belt eastward and a chance of a few snow showers to the west. Snowfall accumulation generally traces / under 1 inch, but 1-2 inches possible on unpaved surfaces just inland mainly Plymouth County MA. Breaking clouds / partial sun this afternoon. Highs 33-40. Wind NE up to 10 MPH shifting to NW.

TONIGHT: Clearing. Lows 20-27. Wind NW up to 10 MPH.

THURSDAY: Mostly sunny. Highs 32-39. Wind NW to variable up to 10 MPH.

THURSDAY NIGHT: Variably cloudy. Lows 20-27. Wind variable under 10 MPH.

FRIDAY: Partly cloudy. Highs 38-45. Wind SW up to 10 MPH.

FRIDAY NIGHT: Partly cloudy. Lows 28-35. Wind SW up to 10 MPH.

SATURDAY: Partly sunny. Highs 43-50. Wind SW 5-15 MPH.

SATURDAY NIGHT: Mostly cloudy. Lows 35-42. Wind S 5-15 MPH.

SUNDAY: Mostly cloudy. Chance of a few rain showers. Heavier rain and possible thunder at night. Highs 55-62. Wind S 10-20 MPH, higher gusts.

DAYS 6-10 (DECEMBER 11-15)

Breezy, dry December 11. Watch for a minor system to bring clouds / light precipitation around the middle of next week but no major storminess indicated. Temperatures variable, averaging near to above normal.

DAYS 11-15 (DECEMBER 16-20)

One or two low pressure systems bring temperature swings and mostly minor precipitation threats with no major storms indicated during this period. Temperatures near to above normal.

DAYS 1-5 (DECEMBER 5-9)

We will be in a chilly northerly air flow during the next three days between high pressure to the west and low pressure well to our southeast. An inverted trough from the low will be nearby later today through early Wednesday, and this, combined with a surface wind that turns northeast and another upper disturbance moving through the region will cause some snow shower activity from tonight into Wednesday morning. This activity will favor the region from the NH Seacoast through eastern and southeastern MA. Some areas will see a minor snowfall accumulation. This event won’t cause many problems, but it can result in temporarily slick conditions on untreated surfaces early Wednesday morning, and again Wednesday evening / night when any meltwater re-freezes. High pressure edges closer to bring dry weather and more sun Thursday, which will also be the coldest day of this 5-day period. Clouds move through Thursday night – an indication of warmer air arriving aloft. At the surface, we’ll see a temperature rebound begin Friday and continue Saturday as the high pressure area slides off to the east and a southwesterly air flow develops. We’ll continue to see dry weather during this late-week period.

TODAY: Partly sunny. Highs 36-43. Wind N up to 10 MPH.

TONIGHT: Cloudy. Snow showers develop, except some mix/rain showers immediate coast / Cape Cod. Snow accumulation less than 1 inch possibly 1-2 inches in a band or two just inland from the MA South Shore (Plymouth / Bristol Counties). Lows 26-33. Wind NE 5-15 MPH.

WEDNESDAY: Mostly cloudy with a chance of snow showers early, then partial sunshine. Highs 33-40. Wind NE to N up to 10 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows 21-28. Wind NW up to 10 MPH.

THURSDAY: Mostly sunny. Highs 32-39. Wind NW to variable up to 10 MPH.

THURSDAY NIGHT: Variably cloudy. Lows 20-27. Wind variable under 10 MPH.

FRIDAY: Partly cloudy. Highs 38-45. Wind SW up to 10 MPH.

FRIDAY NIGHT: Partly cloudy. Lows 28-35. Wind SW up to 10 MPH.

SATURDAY: Partly sunny. Highs 43-50. Wind SW 5-15 MPH.

DAYS 6-10 (DECEMBER 10-14)

A shot of warm air, lots of wind, and a band of rain moving through during December 10 (timing / details to be refined, but leaning toward evening for the best rain chance). Windy, dry, cold air returns December 11. Watch for a minor system to bring clouds / light snowfall/mix toward the middle of next week but no major storminess indicated.

DAYS 11-15 (DECEMBER 15-19)

One or two low pressure systems bring temperature swings and mostly minor precipitation threats with no major storms indicated during this period.