DAYS 1-5 (DECEMBER 26-30)
Today will be a cold and blustery day behind a cold front that passed through the region yesterday. Winds will subside later on as high pressure moves closer to the region. Clouds start to move in later today ahead of a clipper low that will dive southeastward and pass south of our region early Saturday. This system will deliver a swath of light to moderate snow to our region late tonight and early Saturday, with the lighter snowfall and lesser amounts northeast and a period of more moderate snowfall with a bit more accumulation further southwest. As the system departs Saturday morning, there may be a few hours where the South Shore of MA through Cape Cod can experience some ocean-effect snow showers with additional minor snow accumulation, so there may be a few bands of accumulation that exceed the area’s general amount, which will still be on the light side either way. With cold air in place, this will be a generally light and fluffy snow where it accumulations and rather easy to remove. The next low pressure area has a different flight plan as the upper winds will have shifted and will take it through the Great Lakes into southeastern Canada later Sunday, to redevelop over Maine and head into Atlantic Canada during Monday. The impact on our region will come in two bursts. The first will be a light rain and icing event Sunday night into early Monday. Icing (freezing rain) is most likely away from the immediate coast and can cause some hazardous travel conditions, coinciding with commute time on Monday morning. Shortly thereafter, the warm front causing this will lift northward and through the region, with a brief shot of milder air, but helping to melt any icing that took place. The storm’s cold front will swing through during midday and afternoon with numerous rain showers, followed by a wind shift to west and the return of cold air Monday night. Additional icing up of untreated surfaces can take place, though the wind and return to dry weather will help dry off many of these surfaces before a freeze-up can occur. Tuesday’s weather will be dry, cold, and windy behind that system.
TODAY: Sunshine followed by increasing high clouds. Highs 21-28. Wind NW 10-20 MPH with higher gusts, diminishing during the afternoon.
TONIGHT: Clouds thicken. Snow arrives late evening into overnight from west to east, accumulating a coating to 1 inch except 1 to 3 inches from Providence to just south of Worcester southwestward into eastern CT, tapering off from west to east around dawn. Lows 15-22. Wind calm to NE under 10 MPH.
SATURDAY: Lots of clouds early with a period of snow showers possible MA South Shore to Cape Cod with additional minor snow accumulation possible, otherwise a sun / cloud mix. Highs 25-32. Wind NE to N 5-15 MPH shifting to NW.
SATURDAY NIGHT: Mostly clear. Lows 16-23. Wind variable up to 10 MPH.
SUNDAY: Increasing clouds. Highs 32-39. Wind variable up to 10 MPH.
SUNDAY NIGHT: Cloudy with freezing rain (inland) and rain (coast) developing. Lows 30-37 evening then a slow temperature rise overnight. Wind N to E under 10 MPH.
MONDAY: Mostly cloudy. Rain showers likely midday into afternoon. Highs 38-45. Wind E shifting to S increasing to 10-20 MPH with higher gusts, shifting to W late-day from west to east.
MONDAY NIGHT: Clearing. Lows 15-22. Wind W 15-25 MPH.
TUESDAY: Mostly sunny. Highs 25-32. Wind W 15-25 MPH.
DAYS 6-10 (DECEMBER 31 – JANUARY 4)
A snow shower threat December 31 and again a time or two in the early days of 2026, otherwise a cold, dry pattern.
DAYS 11-15 (JANUARY 5-9)
Variable but overall near normal temperatures with a couple disturbances to bring some unsettled weather, but no indication of major storms at this time.
Good morning and thank you TK.
13 here and that is the low
Ocean: 45
Some models hint of Ocean effect reaching Boston, however, not quite to the extent of the South Shore region.
Wordle: 5. ZILCH on 1st guess.
6z hrrr
https://www.pivotalweather.com/model.php?m=hrrr&p=snku_acc-imp&rh=2025122606&fh=48&r=us_ne&dpdt=&mc=
Thanks Tk .
Thanks TK
Looking at the latest guidance this could be the biggest snowfall since January 29 2022 for my area of CT. NYC has not had a four inch snowfall since then.
NYC won’t have time to enjoy their snowfall as it’s going to rain Sunday afternoon into Monday. It will be all washed away within 24 hours.
Bottomed out at 10F.
To those in the know: Is this a possible sea smoke day?
I KNOW NOTHING!
1,390 ❄️
First of the 12z runs today.
HRRR
https://www.pivotalweather.com/model.php?m=hrrr&p=snku_acc-imp&rh=2025122612&fh=26&r=us_ne&dpdt=&mc=
Thanks JJ, but I wanted to add to the above by highlighting an
area where there is obvious Ocean Effect enhancement of the snow. Please see area circled in yellow. We need to watch this area.
https://ibb.co/RT59ppFW
Also, compare to 0Z run
https://www.pivotalweather.com/model.php?rh=2025122600&fh=40&dpdt=&mc=&r=us_ne&p=snku_acc-imp&m=hrrr
12Z RAP Kuchera with still a bit of snow falling at the end of the run
https://www.pivotalweather.com/model.php?m=rap&p=snku_acc-imp&rh=2025122612&fh=21&r=us_ne&dpdt=&mc=
I would not be surprised later on if Winter Weather Advisories are extended to Worcester county.
JpDave you mentioned ocean enhancement. Here is what NWS BOS said in their discussion.
The other area of highest
uncertainty is across SE Mass, where ocean enhancement may boost
snow totals into the 3-6 inch range as the system pulls away and
another reinforcing shot of cold air pushes south.
Yes, and even TK mentioned this area.
In looking at the HRRR (and I am NOT saying it is correct, but in case it is) it looks to me as IF “some” of this enhancement makes
it into Boston. Not as much as to SE of the City, but perhaps enough to add an inch or 2??? Will be MOST interesting to see what the other models say and what future runs of the HI_RES models have to say.
Down where Tom & I reside we had some good ocean enhancement snows where an easily 2 + fell in a short time a couple weeks ago
Thanks, TK.
Happy Boxing Day for those who celebrate.
This day in weather history the Boxing Day Blizzard of 2010. This is what kicked off a six week snow blitz that winter.
12Z NAM Kuchera Snow
https://www.pivotalweather.com/model.php?m=nam&p=snku_acc-imp&rh=2025122612&fh=30&r=us_ne&dpdt=&mc=
From Ryan Hanrahan showing HREF model where there is a chance of 2 plus inch per hour snow rates. 40-50% chance for my area.
https://x.com/ryanhanrahan/status/2004548810224083158
12Z 3KM Kuchera Snow
Notice the slight enhancement on the South Shore just SE of Boston
https://www.pivotalweather.com/model.php?m=nam4km&p=snku_acc-imp&rh=2025122612&fh=36&r=us_ne&dpdt=&mc=
Our overnight low was 8 F.
I got Wordle in 4 today.
YAY!!! I am stuck in a 5 groove!!!
That was the area NWS BOS was talking about in their discussion of a possible enhancement.
Thank you TK!
Belated Merry Christmas to the WHW crew! Was a very busy day yesterday and never made it to the blog but did manage to find time to fail Wordle. Today was a 5.