Lexington Weather

Lexington, Massachusetts, USA

54°F

11/10/2025 2:31am

Lexington Conditions: Fog, Overcast
Temperature: 54.0°F / 12.2°C
Dew Point: 52.9°F
Relative Humidity: 96%
Wind: Calm, 10-min avg: Calm, gust: None
Barometer: 29.62 in Falling Slowly
Visibility: ¼ mile
Rain Today: 0.00 in

Southeast Middlesex County, MA - Special Weather Statement
- SEE ALL NEARBY ALERTS -

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 060826
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
326 AM EST Thu Nov 6 2025

.SYNOPSIS...
Mix of sun and clouds today, with gusty conditions for the 
first part of the day before steadily decreasing into the 
afternoon. High pressure building in tonight brings a clear and
chilly night, but clouds increase again Friday to go along with
increasing southwest breezes. A cold front approaches Friday 
night into early Saturday with a period of showers, followed by 
dry and mild weather Saturday afternoon. Another cold front 
brings more showers to the region sometime Sunday into early 
Monday, followed by much chillier weather later Monday and 
especially by Tuesday. Slight improvements in temperatures 
Wednesday before a reinforcing trough arrives later next week. 

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
300 AM Update:

Key Messages: 

* Windy through early-morning, with gusts in the 40-50 mph range; 
  gusts then steadily decrease through the day. 

* Mix of sun and clouds, dry with highs in the upper 40s to mid 50s.

Details:

Rather gusty WNW winds out across much of Southern New England early 
this morning. Although to be honest, observations bear out that
the gusts to this point have underperformed. The peak of the 
wind gusts is taking place currently, though that's only 
translated to gusts around 45-50 mph in isolated instances, and
are more commonly in the 35-40 mph range. Upstream Doppler 
radar velocity wind profiler data indicate the low-level jet is 
weakening too. For the purposes of the early morning forecast 
package, we opted to downshift the high wind warnings over the 
Cape and Islands to wind advisories valid thru 13z. Will then 
revisit the wind headlines during the pre-dawn hrs; it's 
definitely becoming more difficult to justify having wind 
headlines up, and the potential for an early cancellation is in 
the cards. 

Intervals of sun and stratocumulus clouds today, combined with cold 
advection today will bring a deepening mixed layer. Since we'll be 
able to tap into a deeper portion of the lower atmosphere, we could 
see a secondary perk-up in gusts but BUFKIT momentum transfer progs 
suggest winds in the top of the mixed layer around 35 kt thru early 
afternoon. So thinking NW gusts more in the 25-35 mph range through 
the early afternoon, and then continuing to decrease as we near 
sundown. 

Current temps are in the upper 40s to mid 50s; temperatures not 
likely to climb much as sunshine is offset by strong cold advection. 
Highs may only climb a couple degrees from current values. 

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/...
300 AM Update:

Key Messages: 

* Clear, light winds, rather chilly tonight. Lows in the 20s in most 
  areas!

* Increasing clouds Fri, but dry with modest SW gusts to 25 mph. 
  Highs upper 40s terrain to the mid/upper 50s rest of Southern New 
  England.

Details: 

WNW winds slacken early tonight as p-gradient relaxes. Sfc ridge in 
place with very dry air and 925-850 mb thermal trough at -1 to -3C 
gradually moving offshore. Combined with "solar winter"/longer 
nights, it will set the stage for a rather chilly night, and it 
could end up being one of the coldest nights we've seen in quite
some time. Undercut NBM on lows, with widespread mid/upper 20s 
being pretty common, except around freezing for Boston and out 
over the Outer Cape. 

High pressure then shifts offshore Fri, with returning moderately-
strong warm advection pattern for the aftn. Pretty chilly start to 
Fri and shallow mixing depths too, but despite early-day advance of 
mid to high clouds, temps should rebound into the upper 40s to the 
mid/upper 50s. Tightening SWly pressure gradient supports 20-25 mph 
gusts despite shallow mixing too. NBM too early/aggressive with PoPs 
associated with front, and sided things dry. Better chances after 

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
Key Messages:

* One round of showers Fri night into Sat AM followed by another 
  period of showers sometime Sun into early Mon

* Highs mainly in the 50s to near 60 Fri & Sun with Sat the mildest 
  day with highs in the lower to middle 60s

* Turning colder later Mon with highs Tue in the upper 30s & 40s 
  with even some flurries/sprinkles possible 

Details...

This weekend...

A shortwave/cold front crosses the region Fri night into early Sat. 
Ahead of this front...a modest southwest LLJ of 50+ knots coupled 
with a Pwat surge over 1 inch will bring a period of showers 
sometime Fri night into early Sat. Drier weather follows by Sat 
afternoon but the airmass is still quite mild. 850T of +4C or 
greater coupled with good mixing on westerly flow should allow for a 
mild Sat afternoon. High temps should top off in the lower to middle 
60s across much of the region...a solid 10 degrees above normal for 
this time of year. 

Monday through Thursday...

The next low pressure system will be lifting northeastward across 
the eastern Great Lakes and into eastern Canada Sun into early Mon. 
There also may be some secondary development near the coast. This 
should result in another round of showers sometime Sun into early 
Mon. Much chillier weather follows later Mon into Tue as a deep 
upper trough crosses the region. Looking at a slight moderation in 
temps Wednesday as heights rise before a reinforcing shortwave 
arrives Thursday. In fact...high temps on Tue will only be in the 
upper 30s and 40s with a gusty west wind. There might be a few 
flurries/sprinkles with the shortwave trough. Lows Tue night will be 
mainly in the 20s with dry weather following for Wed and highs in 
the 40s to near 50.

&&

.AVIATION /08Z THURSDAY THROUGH MONDAY/...
Forecaster Confidence Levels...

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

06z TAF Update...High confidence.

The bulk of the -SHRA have cleared and will be followed by 
strong W/NW wind gusts for about 2-4 hours. Most sites should 
see 40-50 knot wind gusts. NW winds slowly diminish Thu but 
probably don't drop below 30kt gusts until late afternoon/early 
evening.


KBOS Terminal... High confidence in TAF.

KBDL Terminal... High confidence in TAF.

Outlook /Friday Night through Monday/... 

Friday Night: Mainly MVFR, with areas VFR possible. Windy with
areas of gusts up to 30 kt. RA likely.

Saturday: Mainly VFR, with local MVFR possible. Breezy. Chance
RA.

Saturday Night: VFR. 

Sunday: MVFR/IFR conditions possible. Breezy. RA likely.

Sunday Night: Mainly VFR, with local IFR possible. Breezy. RA
likely.

Monday: Mainly VFR, with local MVFR possible. Breezy. Chance
RA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Have started to transition storm warnings over to gale warnings
on most waters. SCA conditions anticipated by tonight as gusts
continue to ease.

NW gusts in the 40 to 45 kt range early today, which continue 
to decrease into the 30-35 kt range this afternoon and into the 
SCA range (25-30 kt) by early tonight, then become sub-SCA gusts
overnight. Rough seas around 6-11 ft to slowly decrease through
tonight.

SW winds increase again for Fri, and trend toward 25-30 kt on
most waters by Fri aftn. Low chance at gale force gusts on the
southern waters. 

Outlook /Friday Night through Monday/... 

Friday Night: Strong winds with gusts up to 30 kt. Areas of
rough seas. Rain likely. 

Saturday: Winds less than 25 kt. Local rough seas. Chance of
rain. 

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

Sunday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of seas approaching 5 ft. Rain likely. 

Sunday Night: Winds less than 25 kt. Local rough seas. Rain
likely, isolated thunderstorms. 

Monday: Winds less than 25 kt. Areas of rough seas. Chance of
rain. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Wind Advisory until 8 AM EST this morning for CTZ002>004.
MA...Wind Advisory until 8 AM EST this morning for MAZ002>024-026.
RI...Wind Advisory until 8 AM EST this morning for RIZ001>008.
MARINE...Gale Warning until 1 PM EST this afternoon for ANZ230>237-251-
     255-256.
     Storm Warning until 7 AM EST this morning for ANZ250-254.

&&

$$

SYNOPSIS...Loconto/FT
NEAR TERM...Loconto
SHORT TERM...Loconto
LONG TERM...FT
AVIATION...Loconto/FT
MARINE...Loconto/FT