Lexington Weather

Lexington, Massachusetts, USA

28°F

2/14/2026 5:06am

Lexington Conditions: Overcast
Temperature: 27.7°F / -2.4°C
Dew Point: 16.7°F
Relative Humidity: 63%
Wind: Calm, 10-min avg: Calm, gust: 1 mph
Barometer: 29.97 in Steady
Visibility: 10 miles
Snow Today: 0.0 in

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 091110
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
610 AM EST Mon Feb 9 2026

.WHAT HAS CHANGED...
Snowfall amounts increased slightly for late Tuesday into
Tuesday night, mainly across northern and northeast MA.

&&

.KEY MESSAGES...

- Moderating temps today but another cold night tonight with 
  less wind.

- A quick moving clipper system will bring a period of
  accumulating snow late Tue into Tue night.

- Drier for the second half of the week following Tuesday's
  clipper system. More seasonable temperatures make a return.

&&

.DISCUSSION...
Key Message 1...Moderating temps today but another cold night 
tonight with less wind.

Rising heights today and ridging aloft moves east from the Gt 
Lakes. After a very cold start to the morning, this will allow 
temps to recover into the upper 20s with mostly sunny skies. 
Mixed boundary layer is shallow but enough wind in the low 
levels to support gusts to 25 mph at times. Winds should 
decouple tonight but there will be some increase in mid-high 
clouds which may limit radiational cooling somewhat. Expect 
lows in the single numbers and teens. 

Key message 2...A quick moving clipper system will bring a 
period of accumulating snow late Tue into Tue night.

Fairly potent northern stream shortwave moves into New Eng Tue 
night as the parent surface low passes to the north. A modest 
LLJ ahead of the trough will advect higher PWATs over 0.5" into 
SNE. Forcing for ascent ahead of the warm front will be enhanced
at the nose of the LLJ to bring a period of snow late Tue into 
the first half of Tue night. The snow growth region dries out 
pretty quickly after midnight which should bring and end to the 
snow. The column is plenty cold enough for snow for much of the 
event, but low level warming may introduce a mix or change to 
rain along the immediate south coast and Cape/Islands before the
precip ends. This does not appear to be a significant QPF event
but will have to watch for secondary low development further 
south Tue night. Consensus of the guidance favors development 
mostly east of New Eng which would favor areas to the north for 
the heavier QPF and snowfall. Inverted trough expected to 
develop but convergence is favored across Maine at this time. 
Preliminary snowfall forecast is 1-3 inches with the highest 
amounts favored across northern and NE MA where locally up to 4
inches is possible. Amounts may be limited to less than an inch
along the immediate south coast.

Key Message 3...Drier for the second half of the week following 
Tuesday's clipper system. More seasonable temperatures make a return.

As the clipper system continues east Wednesday, some snow
showers may linger in the afternoon and evening hours towards 
eastern MA. These could last longer for the outer Cape, but
exact details are still unknown this far out. NW flow returns 
as a secondary low that develops offshore circulates and shifts 
off to the northeast before winds weaken more heading into 
Friday. Behind this whole clipper system, high pressure starts 
to build back in over the region for the second half of the week
and drier conditions prevail. With the arctic airmass overhead 
gone, a more climatologically normal airmass for this time of 
year settles in with 925 mb temperatures back to around -10C to 
-5C. Highs make it back to the mid to upper 30s over southern 
New England from Wednesday onward, though nighttime lows will 
still fall into the teens and low 20s, with some spots in the 
interior in the single digits. Though, notably, wind chills will
not be as brutally cold.

&&

.AVIATION /12Z MONDAY THROUGH FRIDAY/...
Forecaster Confidence Levels...

Low - less than 30 percent. 
Moderate - 30 to 60 percent. 
High - greater than 60 percent.

12z TAF Update...No major changes.

VFR through much of Tue, but some MVFR possible by late in the day 
across portions of northern and NE MA as light snow develops. NW 
gusts to 20-25 kt today diminishing and becoming light N-NW tonight.

Outlook /Tuesday Night through Friday/...

Tuesday Night: Mainly VFR, with local IFR possible. Chance SN.

Wednesday: Mainly VFR, with local MVFR possible. Breezy. Slight
chance SN.

Wednesday Night: VFR. Slight chance SN.

Thursday: VFR. Breezy. 

Thursday Night through Friday: VFR.

&&

.MARINE...
Forecaster Confidence Levels...

Low - less than 30 percent. 
Moderate - 30 to 60 percent. 
High - greater than 60 percent.

Marginal SCA gusts today 20-25 kt diminishing tonight, then 
becoming SW around 10 kt Tue. Seas subsiding through tonight 
and dropping below SCA on the outer waters Tue. Freezing spray 
gradually diminishing through today.

Outlook /Tuesday Night through Friday/...

Tuesday Night: Winds less than 25 kt. Seas locally approaching
5 ft. Chance of rain, chance of snow. Local visibility 1 nm or
less.

Wednesday: Winds less than 25 kt. Areas of seas approaching
5 ft. Slight chance of snow. 

Wednesday Night: Winds less than 25 kt. Local rough seas.
Slight chance of snow. 

Thursday: Winds less than 25 kt. Areas of seas approaching
5 ft. 

Thursday Night: Winds less than 25 kt. Seas locally approaching
5 ft. 

Friday: Winds less than 25 kt.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Cold Weather Advisory until 10 AM EST this morning for 
     CTZ002>004.
MA...Cold Weather Advisory until 10 AM EST this morning for 
     MAZ002>004-008>012-026.
RI...None.
MARINE...Small Craft Advisory until 5 PM EST this afternoon for ANZ230.
     Small Craft Advisory until 7 PM EST this evening for ANZ231-
     232-251.
     Freezing Spray Advisory until 1 PM EST this afternoon for 
     ANZ231>237-250-251-254>256.
     Small Craft Advisory until 7 AM EST Tuesday for ANZ250-254>256.

&&

$$

DISCUSSION...KJC/Hrencecin
AVIATION...KJC/Hrencecin
MARINE...KJC