Lexington Weather

Lexington, Massachusetts, USA

54°F

11/10/2025 2:29am

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 032007
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
307 PM EST Mon Nov 3 2025

.SYNOPSIS...
Rain this evening and continues into the first half of the night. A 
cold front passes through overnight, ending the rain and bringing a 
period of gusty winds through Tuesday. A series of cold fronts pass 
through southern New England throughout the week into the weekend, 
leading to more unsettled conditions. These will likely be followed 
by periods of dry weather between fronts as high pressure briefly 
creeps in between them. 

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
Key Messages: 

* Showers this evening, drying out overnight with gusty winds. 

Early this afternoon a mid-level southern stream shortwave moves 
across the waters of southern New England, leading to areas of light 
rain mainly across coastal Rhode Island, southeast Massachusetts, 
Cape cod, and the islands. Next round of showers comes as a cold 
front associated with a robust mid-level trough and surface low 
pressure moving across eastern Canada. Southwesterly flow increases 
Pwats between 0.8" to 1.0", enough moisture for periods of rainfall 
late this evening. Convection-Allowing Models (cams) shows a line of 
heavier showers moving quickly across the region from west to east, 
arriving to western massachusetts between 5pm/7pm and exiting the 
coast around midnight. Greatest rainfall, likely 0.25" to 0.50" 
falls along and east of the I-95 corridor, while areas west 
generally receive 0.10" or less. 

The cold front brings gusty northwest flow due to cold air advection 
(CAA), 925mb wind field are between 40 and 50 knots. Bufkit sounding 
mix down gusts of 25 to 35 mph, a tad stronger on Cape Cod and the 
islands with gusts of 35-45 mph. 

Low temperatures range between the upper 30s to middle 40s, cooler 
in the lower 30s across higher terrain of northwestern Massachusetts.

Given the overall lighter rates and progressive nature of the 
system, flash flooding isn't a concern. However, leaf-clogged storm 
drains this time of year may factor in and keep the risk for 
isolated nuisance flooding/ponding possible.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/...
Key Messages: 

* Strong wind gusts of 40 to 50 mph expected through Tuesday.

Sunshine returns Tuesday, though it's windy, coming in the wake of a 
departing cold front/low pressure system and strong high pressure 
building to the southwest... Resulting in a robust pressure gradient 
Across the northeast. 

Full sunshine helps to deepen the boundary layer and tap into those 
stronger gusts aloft. Bufkit is well-mixed to 850mb+, where winds 
are 45 to 55 knots. With northwest flow, it's possible to tap into 
the stronger gusts and transfer them to the surface. Thinking that 
most of the area experiences gusts between 30 and 40 mph, with the 
strongest gusts across eastern-half of southern New England; such as 
the islands, Cape Cod where gusts are between 40-50 mph.

* Wind Advisory 10pm Mon to 7pm Tue: Nantucket, Martha's Vineyard, 
  Cape Cod, and Block Island for gusts up to 50 mph.

* Wind Advisory 4am to 7pm Tue: All of eastern Massachusetts and 
  Rhode Island for gusts up to 45 mph.

Jet diminishes Tuesday evening, winds at the surface slacken into 
Tuesday night. Strongest winds exit the region by midnight, leaving 
wind gusts around 15 to 20 mph the rest of the night. 

Temperaturewise, highs are middle 50s and nighttime lows in the 
middle to upper 30s. 

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
Key Messages...

* Unsettled pattern with a series of cold fronts passing through 
  during the week into the weekend with periods of dry weather 
  between them during the day

* Gusty winds post-front Wednesday night into Thursday

* Mostly seasonable temperatures through the week with highs 
  mostly in the 50s, occasionally dipping into the 40s

A generally unsettled pattern is expected through the week into the 
weekend interspersed with periods of dry weather. The first of the 
frontal systems is expected to pass through Wednesday night into 
Thursday morning as a low passes over New England. Ahead of the 
front, S to SW flow will help advect in slightly warmer, more moist 
air. This with the lift from the front will produce some showers for 
a short period. Showers may be out of the region heading into the 
later morning hours Thursday. In the front's wake, gusty NW winds 
are expected to dominate much of Thursday, especially with clearing 
skies and good mixing. Winds diminish going into Thursday night as 
high pressure begins to creep in from the SW.

Another frontal system pushes through Friday night, bringing another 
chance for some showers heading into the weekend. NAEFS guidance is 
indicating IVT reaching the 90th percentile of climatology over 
southern New England Friday night, lining up with elevated S flow 
with WAA (925 mb temperatures approach 10C in this period once 
again). Ensemble mean PWAT values range between 0.8" and 0.95" pre-
frontal passage; so with this elevated moisture and the approaching 
front, more showers are expected. High pressure returns once again 
to dry things out briefly heading into Sunday before another system 
pushes through heading into Monday. Through the whole week into the 
weekend, high temperatures are expected to remain primarily in the 
40s and 50s behind the fronts, with some spots reaching the low 60s 
towards the southern coastlines and even up into SE MA ahead of the 
cold fronts amidst WAA.

&&

.AVIATION /20Z MONDAY THROUGH SATURDAY/...
Forecaster Confidence Levels...

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

Today... High confidence in trends, moderate in timing. 

VFR. SW to SSW winds 8 to 12 knots with a few gusts up to 20 knots. 
Showers arriving from west to east after 22z through 04z. Ceilings 
and visibilities drop to MVFR within any areas of rain.

Tonight... High confidence.

Rain exits by 06z. Cold front moves through 01z to 06z from west to 
east with gusty WNW winds behind it. Gusts 25 to 35 knots. Quick 
improvements to VFR behind front.

Tuesday and Tuesday Night... High confidence. 

VFR. Gusty WNW winds 15 to 25 knots with gusts 25 to 35 knots, 
strongest over higher terrain and coastal areas to 40 knots. Wind 
slackens 02z to 06z Wednesday, gusts falling lower than 20 knots. 

KBOS Terminal... High confidence. 

KBDL Terminal... High confidence.

Outlook /Wednesday through Saturday/... 

Wednesday: VFR. Windy with local gusts up to 30 kt. 

Wednesday Night: Mainly VFR, with local MVFR possible. Strong
winds with local gusts up to 40 kt. Chance RA.

Thursday: VFR. Strong winds with local gusts up to 40 kt. 

Thursday Night: VFR. Breezy. 

Friday: VFR. Windy with local gusts up to 30 kt. 

Friday Night: MVFR/IFR conditions possible. Windy with local
gusts up to 30 kt. RA.

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

&&

.MARINE...
Forecaster Confidence Levels...

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

Key Messages:

* Gale Warning brings strong NNW wind tonight through Tuesday.

Monday through Tuesday Night... High confidence. 

Robust cold front brings WNW Gale Force winds of 30 and 40 knots to 
all waters surrounding southern New England tonight and continuing 
though Tuesday evening. 

The passage of the cold front brings showers this evening, but will 
quickly dry out overnight. Seas build overnight into Tuesday with 
seas nearshore 3 to 6 feet and offshore 6 to 9 feet. Seas will begin 
to decrease Tuesday night. 

Outlook /Wednesday through Saturday/... 

Wednesday: Low risk for Small Craft Advisory winds with gusts
up to 30 kt. Local rough seas. 

Wednesday Night: gale force winds with gusts up to 45 kt. Areas
of rough seas. Chance of rain. 

Thursday: Moderate risk for gale force winds with gusts up to
45 kt. Rough seas up to 13 ft. Slight chance of rain. 

Thursday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Local rough seas. 

Friday: Moderate risk for Small Craft Advisory winds with local
gusts up to 30 kt. Seas locally approaching 5 ft. 

Friday Night: Strong winds with gusts up to 35 kt. Areas of
rough seas. Rain likely. 

Saturday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of rough seas. Rain likely. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...Wind Advisory from 4 AM to 7 PM EST Tuesday for MAZ004>007-
     012>021-026.
     Wind Advisory from 10 PM this evening to 7 PM EST Tuesday for 
     MAZ022>024.
RI...Wind Advisory from 4 AM to 7 PM EST Tuesday for RIZ001>007.
     Wind Advisory from 10 PM this evening to 7 PM EST Tuesday for 
     RIZ008.
MARINE...Gale Warning from 7 PM this evening to 7 PM EST Tuesday for 
     ANZ230>237-250-251-254>256.

&&

$$

SYNOPSIS...Dooley/Hrencecin
NEAR TERM...Dooley
SHORT TERM...Dooley
LONG TERM...Hrencecin
AVIATION...Dooley/Hrencecin
MARINE...Dooley/Hrencecin