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.

1:44AM

DAYS 1-5 (DECEMBER 8-12)
A cold weekend for southeastern New England with the only precipitation threat being scattered snow showers from a passing trough this evening. A broad low pressure area will pass well south of New England Monday but as it strengthens and turns northeastward in the western Atlantic it will help pull another batch of cold air out of eastern Canada. By Wednesday, warmer air will be trying to move in aloft while the surface is still cold. This will result in at least cloudiness and possibly some very light snow. In addition, surface winds will turn onshore, and some ocean moisture may add snow showers to eastern areas.
Forecast details…
TODAY: Sunny through early afternoon then partly cloudy. Highs 24-31. Wind NW 5-15 MPH.
TONIGHT: Partly cloudy with scattered snow showers evening then clear overnight. Lows 8-14 except 15-20 urban areas. Wind N under 10 MPH.
SUNDAY: Sunny. Highs 30-36. Wind W up to 10 MPH.
SUNDAY NIGHT: Clear. Lows 15-22. Wind light W.
MONDAY: Sunny. Highs 34-40. Wind W up to 10 MPH.
TUESDAY: Sunny. Lows in the 10s. Highs from the middle 20s to lower 30s.
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.

DAYS 6-10 (DECEMBER 13-17)
Milder air becomes more established December 13-14 with some cloudiness and passing rain showers possible each of these days, then a larger storms system brings rain/wind to the region December 15 then lingering rain/mix/snow showers December 16 as the low center crosses the region. Upper level low pressure may bring a few snow showers as it turns slightly colder December 17.

DAYS 11-15 (DECEMBER 18-22)
A transitional pattern with high pressure aloft dominant but moving eastward and then may become strongest in east central Canada while a trough of low pressure undercuts it. This pattern would start mild and trend colder and also be somewhat unsettled with possible episodes of rain/snow. It’s far too soon to know any details in terms of timing and what type of precipitation will occur where and when.

6:23AM

DAYS 1-5 (DECEMBER 7-11)
A surge of modified arctic air arrives today and lasts into the weekend, moderating slightly Monday only to be reinforced again Tuesday. From the end of the weekend to early next week, broad low pressure will pass safely out to sea south of New England.
Forecast details…
TODAY: Mostly sunny. Highs 33-40. Wind NW 10-20 MPH with higher gusts.
TONIGHT: Clear. Lows 10-16 except 17-22 urban centers. Wind NW 5-15 MPH, higher gusts early.
SATURDAY: Sunny. Highs 24-31. Wind NW 5-15 MPH.
SATURDAY NIGHT: Clear. Lows 8-14 except 15-20 urban areas. Wind N under 10 MPH.
SUNDAY: Sunny. Highs 30-36. Wind W up to 10 MPH.
MONDAY: Sunny. Lows from the middle 10s to lower 20s. Highs from the middle 30s to near 40.
TUESDAY: Sunny. Lows in the 10s. Highs from the middle 20s to lower 30s.

DAYS 6-10 (DECEMBER 12-16)
Clouds arrive with a slight risk of light snow/mix later December 12 as warmer air advances toward the region. Milder with a few rain showers possible December 13. A stronger storm system possible, likely rain, during the December 14-15 period as the weather pattern at that time would have a ridge of high pressure to the east of New England and a storm track through the Great Lakes, sending temperatures to above normal levels. Rain/snow showers possible with upper level low pressure crossing the region December 16.

DAYS 11-15 (DECEMBER 17-21)
Turning colder with snow showers possible to start this period. Temperatures moderating to near to above normal with mainly dry weather for the remainder of the period.

7:33AM

DAYS 1-5 (DECEMBER 6-10)
Cold and dry is the theme of this period with the only event of any note being a reinforcing cold front moving through tonight which may produce some snow showers. With more confidence I can now say that a storm we were watching for early next week will pass well south of this area.
Forecast details…
TODAY: Sunny start, clouds arrive later. Highs 35-42. Wind W up to 15 MPH.
TONIGHT: Variably cloudy. Scattered snow showers. Lows 25-32. Wind 10-15 MPH shifting to NW with higher gusts.
FRIDAY: Mostly sunny. Highs 33-40. Wind NW 10-20 MPH with higher gusts.
FRIDAY NIGHT: Clear. Lows 10-16 except 17-22 urban centers. Wind NW 5-15 MPH, higher gusts early.
SATURDAY: Sunny. Highs 24-31. Wind NW 5-15 MPH.
SUNDAY: Sunny. Lows in the 10s, coldest away from urban location. Highs in the 30s.
MONDAY: Sunny. Lows from the middle 10s to lower 20s. Highs from the middle 30s to lower 40s.

DAYS 6-10 (DECEMBER 11-15)
Dry/cold December 11. Clouds arrive with a slight risk of light snow/mix later December 12 as warmer air advances toward the region. Milder with a few rain showers possible December 13. A stronger storm system possible, likely rain, during the December 14-15 period as the weather pattern at that time would have a ridge of high pressure to the east of New England and a storm track through the Great Lakes, sending temperatures to above normal levels.

DAYS 11-15 (DECEMBER 16-20)
Turning colder with snow showers possible to start this period. Confidence lower thereafter as temperatures probably start seasonably chilly then moderate slightly while not ruling out 1 or 2 passing systems with some precipitation.

2:00AM

DAYS 1-5 (DECEMBER 5-9)
High pressure will bring chilly and dry weather to the region for the next few days but the air flow between it and low pressure passing well south of New England will be enough to help develop a few snow showers in some east coastal areas later today and this evening. A fast-moving cold front will cross the region between late Thursday and early Friday, reinforcing the cold air for the weekend as another high pressure area moves in.
Forecast details…
TODAY: Sun filtered through high cloudiness, also coastal lower clouds move in with a slight risk of isolated light snow showers, mainly Cape Cod this afternoon. Highs 32-38. Wind light N shifting to NE then back to N.
TONIGHT: Partly cloudy. Chance of light snow showers MA South Shore early evening, and Cape Cod again late eveningLows 15-22. Wind light NW to W.
THURSDAY: Mostly sunny morning. Partly sunny afternoon. Highs 34-40. Wind SW 5-15 MPH.
THURSDAY NIGHT: Variably cloudy. Scattered snow showers. Lows 18-25. Wind SW 5-15 MPH shifting to NW 10-20 MPH with higher gusts.
FRIDAY: Partly sunny. Scattered snow showers in the morning. Highs 30-36. Wind NW 10-20 MPH with higher gusts.
SATURDAY: Mostly sunny. Lows in the 10s. Highs from the upper 20s to middle 30s.
SUNDAY: Mostly sunny. Lows in the 10s. Highs in the 30s.

DAYS 6-10 (DECEMBER 10-14)
A broad low pressure area passing south of the region December 10-11 should be close enough to bring mix/snow to at least the South Coast and possibly far enough north to impact more of the region with the potential for accumulating snow – will watch and fine tune. Advancing milder air will bring cloudiness back and some light precipitation later December 12 into December 13 followed by a fair and milder end to the period.

DAYS 11-15 (DECEMBER 15-19)
This period likely starts mild as a high pressure ridges transits across the eastern US including the Northeast, then a turn back to more seasonable chill may be preceded by brief wet weather around December 18-19.

7:19AM

DAYS 1-5 (DECEMBER 4-8)
High pressure will bring chilly and dry weather to the region for the next few days. A fast-moving cold front will cross the region between late Thursday and early Friday, reinforcing the cold air for the end of the week.
Forecast details…
TODAY: Sunny. Temperatures steady in the 30s. Wind NW 10-20 MPH, higher gusts, diminishing late.
TONIGHT: Clear evening, high clouds arrive overnight. Lows 18-25. Wind N under 10 MPH.
WEDNESDAY: Sun filtered through high cloudiness. Highs 32-38. Wind light N becoming light variable.
WEDNESDAY NIGHT: Partly cloudy. Lows 15-22. Wind light W.
THURSDAY: Mostly sunny. Clouds and scattered snow showers arrive evening. Highs 34-40. Wind SW 5-15 MPH.
FRIDAY: Partly sunny. Scattered snow showers. Lows from the upper 10s to lower 20s. Highs in the 30s.
SATURDAY: Mostly sunny. Lows in the 10s. Highs from the upper 20s to middle 30s.

DAYS 6-10 (DECEMBER 9-13)
Dry, cold December 9. Will watch a storm passing south of the region December 10-11 in case it ends up far enough north to bring snow/mix to the region. Fair, moderating temperatures later in the period but some cloudiness may arrive with the moderation.

DAYS 11-15 (DECEMBER 14-18)
Mild temperatures for the first couple days with some wet weather possible prior to the return of a more seasonable December chill.

6:44AM

DAYS 1-5 (DECEMBER 3-7)
The transitional pattern is ahead of schedule and nearly complete and the expected turn to a predominately colder/drier pattern arrives this week, but not before a start to the week that will hold both a reminder of recent weather, as the early hours of Monday are damp and grey, and a brief treat as the day turns out quite nice before the cold front arrives that introduces the feel of the upcoming pattern. After this, the polar jet stream becomes the dominant steering influence for systems impacting southeastern New England weather this week, keeping a southern jet stream system well to the south at midweek. Our precipitation threats will be minimal this week, being in the form of patchy drizzle to start today, a possible rain shower a couple times during today, and possible snow showers with a late-week trough. Forecast details…
TODAY: Cloudy with areas of fog and drizzle as well as isolated rain showers into mid morning then a sun/cloud mix with a passing rain shower possible late morning on. Highs 49-56. Wind light variable early, then SW 5-15 MPH.
TONIGHT: Partly to mostly cloudy with a passing rain shower coastal areas and rain or snow shower interior, then clearing before dawn. Temperatures fall to the 30s. Wind SW 10-20 MPH, higher gusts, shifting to NW.
TUESDAY: Sunny. Temperatures steady in the 30s. Wind NW 10-20 MPH, higher gusts, diminishing late.
TUESDAY NIGHT: Clear evening, high clouds arrive overnight. Lows 18-25. Wind N under 10 MPH.
WEDNESDAY: Sun filtered through high cloudiness. Highs 34-41. Wind light N becoming light variable.
THURSDAY: Mostly sunny. Lows in the 10s. Highs in the 30s.
FRIDAY: Partly sunny. Scattered snow showers. Lows from the upper 10s to lower 20s. Highs in the 30s.

DAYS 6-10 (DECEMBER 8-12)
Fair/cold weekend of December 8-9. Will watch a storm passing south of the region December 10 in case it ends up far enough north to bring snow/mix to the region. Fair, chilly December 11-12 though clouds may return to end the period.

DAYS 11-15 (DECEMBER 13-17)
A milder trend expected for much of this period with dry weather for a lot of it, then some wet weather may occur just before a flip back to colder weather at the end of the period.

8:06AM

DAYS 1-5 (DECEMBER 2-6)
Elongated low pressure from the Great Lakes across New England and beyond into the Canadian Maritimes will send a warm front northward through the region today. A large area of rain will cross the region this morning, moving out at midday, leaving a few rain showers behind, but perhaps some lingering drizzle and fog north of the frontal boundary, which will lift northward allowing the mild air into all areas this evening into Monday before a cold front brings a new chilly air mass into the region Tuesday through midweek. During this time, energy will pass south of the region, not allowing what looked like a possible snow threat to materialize. Some upper level energy may cause a few snow showers to develop Wednesday in a slightly unstable atmosphere.
Forecast details…
TODAY: Overcast through early afternoon with rain and areas of fog, but rain tapering off early afternoon rapidly from west to east. Cloudy southern NH and northern MA with patchy drizzle and a chance of rain showers remainder of day while southern MA, eastern CT, and RI are mostly cloudy with a slight risk of rain showers. Highs 42-48 north, 48-55 south. Wind E shifting to N 5-15 MPH in northern areas, SE shifting to SW 10-20 MPH in southern areas.
TONIGHT: Breaking clouds. Lows 40-46. Wind SW 5-15 MPH.
MONDAY: Partly cloudy. Highs 52-58. Wind SW 5-15 MPH, higher gusts.
MONDAY NIGHT: Variably cloudy. Risk of a passing rain shower. Temperatures fall to the 40s. Wind SW 10-20 MPH, shifting to NW late.
TUESDAY: Mostly sunny. Temperatures fall from the 40s to the 30s. Wind NW 10-20 MPH, higher gusts.
WEDNESDAY: Partly sunny. Risk of snow showers. Lows in the 20s. Highs in the 30s.
THURSDAY: Mostly sunny. Lows in the 20s. Highs in the 30s.

DAYS 6-10 (DECEMBER 7-11)
A disturbance brings a risk of snow showers December 7. Timing of next threat looks a little later so fair weather expected December 8-9 with snow/mix threat later December 10 to early December 11 as a system passes near or south of the region. Temperatures below normal.

DAYS 11-15 (DECEMBER 12-16)
Mid month moderation in temperature may come with initial unsettled weather then fair weather to follow.

9:57AM

DAYS 1-5 (DECEMBER 1-5)
And so this is December. Welcome to the 12th month of the calendar year, or the 1st month of Meteorological Winter. What will the first 5 days be like? Read on… The month begins with a tranquil day, light wind, not too cold but a seasonable chill in the air as a small area of high pressure starts overhead then slides away to the east. A broad low pressure area will be moving into the Great Lakes region and stretching out north of the region as its elongating center eventually redevelops across the Canadian Maritimes by Monday. The morphing of this system will send a warm front into the region tonight and Sunday with a period of rain except possibly starting as snow/sleet in interior northern MA and southern NH. But most of the upper level support for steadiest rain will be offshore by early afternoon Sunday, so the morning hours will be wettest. South of the surface boundary will be warmest during the day, and that boundary may hang in the region just north of the Mass Pike for a good portion of the midday and afternoon without making much more progress, so this makes the temperature forecast a little bit of a challenge for areas closest to the boundary. The boundary gets a northward kick Sunday evening when areas to the north may reach their warmest readings of the day and this mild air hangs around Monday before a trough line, remaining from the old stretched out low, and a cold front come southeastward across the region. This will return colder air to the region by Tuesday and Wednesday, a period of time we have been watching for a potential precipitation threat. Most reliable indicators show the bulk of this system passing too far south of the region for any significant impact, but there may be enough upper level energy coming across the region for snow showers Wednesday. At 5 days out this is not a super high confidence forecast but will add the chance in for now and tweak as needed.
Forecast details…
TODAY: Mostly to partly sunny. Highs 36-43. Wind light variable to SE.
TONIGHT: Becoming cloudy. Rain arriving west to east late night probably starting as sleet/snow with a possible coating interior northern MA through southern NH, and possible brief freezing rain higher elevations north central MA to southwestern NH. Lows 30-36. Wind light E.
SUNDAY: Overcast through early afternoon with rain and areas of fog, but rain tapering off early afternoon rapidly from west to east. Cloudy southern NH and northern MA with patchy drizzle and a chance of rain showers remainder of day while southern MA, eastern CT, and RI are mostly cloudy with a slight risk of rain showers. Highs 42-48 north, 48-55 south. Wind E shifting to N 5-15 MPH in northern areas, SE shifting to SW 10-20 MPH in southern areas.
SUNDAY NIGHT: Breaking clouds. Lows 35-42. Wind W 5-15 MPH, higher gusts.
MONDAY: Partly cloudy. Risk of a passing rain shower afternoon or evening. Highs 46-53. Wind W 10-20 MPH, higher gusts.
TUESDAY: Sun to clouds. Risk of brief very light snow at night. Temperatures fall to the 30s day and into the 20s night.
WEDNESDAY: Clouds to sun. Risk of snow showers. Lows in the 20s. Highs in the 30s.

DAYS 6-10 (DECEMBER 6-10)
Fair, cold December 6. Disturbance brings snow shower risk December 7. Watching for potential snow/mix threat late December 8 into December 9. Fair, cold December 10.

DAYS 11-15 (DECEMBER 11-15)
Overall pattern drier, but minor systems may bring brief precipitation. Temperatures near to below normal.

7:40AM

DAYS 1-5 (NOVEMBER 29-DECEMBER 3)
Making no changes today. Tranquil day today with a small area of high pressure overhead but clouds will roll in ahead of a weakening disturbance which, moving right along, may bring a touch of light snow/rain to parts of the region tonight before departing early Saturday. Most places will see nothing from it. Broad low pressure will move in Saturday night into Sunday, bringing milder air and a period of rain. A surface boundary will likely set up somewhere near or north of the Mass Pike, south of which will be the mildest air during the day. This boundary may lift a little north during the night into early Monday before a stronger cold front arrives Monday night to bring colder air back by Tuesday. At that time we will already be watching the approach of another low pressure area from the southwest that previously has been talked about as a snow threat, and still is, but not a great threat as far as we can see with any confidence. Although it remains something to watch.
Forecast details…
TODAY: Sun gives way to clouds. Highs 38-45. Wind light variable.
TONIGHT: Mostly cloudy. Brief very light rain and/or snow possible. Lows 30-36. Wind light variable.
SATURDAY: Partly sunny. Highs 38-45. Wind light SE.
SATURDAY NIGHT: Cloudy. Rain arriving late from west to east, may start as a mix with some snow and/or sleet higher elevations north central MA and southwestern NH. Lows 32-38. Wind E 5-15 MPH.
SUNDAY: Overcast with rain, drizzle, areas of fog morning. Cloudy with areas of drizzle and chance of a rain shower southern NH and northern MA, mostly cloudy with a slight risk of a rain shower southern MA, eastern CT, and RI afternoon. Highs 42-48 southern NH and northern MA, 48-55 southern MA, eastern CT, and RI. Wind light variable northern areas, south to southwest 10-20 MPH southern areas.
MONDAY: Partly sunny. Risk of a passing rain or snow shower evening. Lows from the upper 30s to middle 40s. Highs from the upper 40s to middle 40s.
TUESDAY: Partly to mostly cloudy. Slight risk of snow late. Temperatures fall to the 30s.

DAYS 6-10 (DECEMBER 5-9)
Potential snow December 5 but system may pass largely south of the region. Watching for a disturbance that may bring snow showers late December 6 into December 7 otherwise mainly dry. Another system may threaten with snow/mix later December 8 into December 9 but highly uncertain. Temperatures below normal for the period.

DAYS 11-15 (DECEMBER 10-14)
Still expecting the majority of the subtropical jet stream energy to remain to the south with minor systems in the polar jet stream bringing light precipitation threats and keeping temperatures near to mostly below normal.

8:27AM

DAYS 1-5 (NOVEMBER 29-DECEMBER 3)
No changes to thoughts on upcoming weather. Gusty breeze and a chill today between departing low pressure and approaching high pressure, then more tranquil with high pressure overhead Friday. Weak disturbance may bring spotty very light rain/snow first thing Saturday, probably pre-dawn if at all, but basically a dry day. Broad low pressure approaches and will bring milder air and rain into the region Saturday night into Sunday morning, but this system will be weakening as it passes through. Drier air returns by Monday but not that cold. We’ll have to wait for a cold front to deliver colder air and that is not due to arrive until evening.
Forecast details…
TODAY: Mostly sunny. Highs 35-42. Wind NW 10-20 MPH, higher gusts.
TONIGHT: Mostly clear. Lows 18-25. Wind NW 5-15 MPH, higher gusts.
FRIDAY: Partly cloudy. Highs 38-45. Wind light variable.
FRIDAY NIGHT: Mostly cloudy. Brief very light rain and/or snow possible overnight. Lows 30-36. Wind light SW.
SATURDAY: Mostly cloudy. Rain arriving at night. Highs 38-45. Wind light SE.
SUNDAY: Mostly cloudy. Rain likely morning. Slight chance of a rain shower afternoon. Lows from the upper 30s to lower 40s. Highs from the upper 40s to middle 50s.
MONDAY: Partly sunny. Risk of a passing rain or snow shower evening. Lows in the 30s. Highs in the 40s.

DAYS 6-10 (DECEMBER 4-8)
Will have to watch arrival of colder air timed with a wave of low pressure that can bring snow/mix/rain December 4-5 with timing and details to be sorted out in the days ahead. Drier weather follows for December 6-7 with the next precipitation threat around December 8. Temperatures near to below normal.

DAYS 11-15 (DECEMBER 9-13)
Transitional pattern, active with amount of systems but generally not expecting major storms as the polar jet tries to become dominant and the subtropical jet trends more southward. Still risks of unsettled weather a few times with timing uncertain this far in advance.