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 062330
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
630 PM EST Thu Nov 6 2025

.SYNOPSIS...
High pressure will build over New England tonight before moving 
offshore Friday. A cold front should bring some showers Friday night 
into Saturday, followed by dry and mild weather Saturday afternoon, 
before another cold front brings more showers Sunday. Colder weather 
will follow much of next week.

&&

.NEAR TERM /THROUGH FRIDAY/...
Updated at 1 PM Thu:

Key Messages:

 * Clearing and cold tonight.
 * Turning breezy and milder Friday.

Strong NW flow aloft and cold advection has led to diurnal
cloudiness across most of region and even a few sprinkles as
seen on radar. These will last for a few more hours and then
diminish by late afternoon as high pressure builds over New 
England tonight. Clearing skies and lighter winds will result
in a cold night with temperatures falling well down into 20s 
away from coast and into 30s elsewhere. 

Broad upper ridge remains in place most of day Friday which should 
keep any showers to our west, while increasing SW winds bring in 
milder air as surface high moves offshore. Forecast soundings
show potential for 20-25 mph gusts, especially near coast Friday
afternoon.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY NIGHT/...
Updated at 1 PM Thu:

Key Messages:

 * Couple of rounds of showers this weekend.
 * Dry and mild in between Saturday afternoon.

Fast upper flow continues this weekend which will bring two weather 
systems through region. 

First system tracks through eastern Great Lakes and pushes a cold 
front through New England Friday night into Saturday morning 
accompanied by a period of showers. Not looking at much in way of 
rainfall, most likely 0.25" or less, as best dynamics remain well to 
our NW and system remains progressive. Saturday afternoon actually 
looks like pick of weekend for outdoor activities as airmass behind 
front isn't cold at all, with 850mb temperatures in the +1 to +6C 
range, and that supports highs in the 50s and lower 60s with 
sunshine and W winds. 

Second system follows quickly sometime Sunday into early Monday as 
primary low tracks through eastern Great Lakes and a weaker 
secondary low tracks near or just offshore of southern New England. 
At this time range we're seeing usual differences in onset of 
showers, with global models being a bit faster than higher-res 
models. Either way, rainfall once again does not appear to be much, 
something like another 0.25 to 0.50".

One other concern Sunday afternoon is some minor coastal flooding 
along the Sound side of Cape Cod (Falmouth) due to lingering high 
astronomical tides and possible brisk S/SE flow ahead of secondary 
low. However, that is highly dependent upon the exact track of the 
low so there is a lot of uncertainty right now. It's more likely 
that the storm tide stays below flood stage but something to keep an 
eye on. Nantucket is also showing a similar potential for borderline 
minor flooding but that is more unlikely given S/SE flow.

&&

.LONG TERM /MONDAY THROUGH THURSDAY/...
Updated at 1 PM Thu:

Key Messages:

 * Turning colder next week with below normal temperatures.
 * Dry overall aside from some flurries/sprinkles near Berkshires.

Much advertised pattern change to colder weather is still on track 
for much of next week as closed upper low rotates around Great Lakes 
and sets up broad trough across eastern states. Core of coldest air 
arrives Tue when daytime temperatures will struggle to get out of 
the upper 30s in the higher terrain and 40s elsewhere, then recover 
into the 40s to around 50 for the rest of the week.

Pattern also looks to be dry, although with strong W/NW flow aloft 
we could see some lake effect snow showers possibly survive the trip 
over Berkshires, bringing flurries or sprinkles, especially to 
locations near the east slopes. Additionally, there will likely be 
bands of rain showers off Cape Cod and Nantucket, but W/NW flow 
should keep these focused offshore.

&&

.AVIATION /00Z FRIDAY THROUGH TUESDAY/...
Forecaster Confidence Levels...

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

00z TAF Update: High confidence.

VFR. Isolated pockets of LLWS with values likely staying below
35kts before weakening quickly after 00z. NW winds will 
continue to diminish this afternoon before dropping below 10kt 
tonight and becoming W. SW winds expected Fri with 20-25kt gusts
in the afternoon, especially near coast.

KBOS Terminal...High confidence in TAF. 

KBDL Terminal...High confidence in TAF.

Outlook /Monday through Tuesday/... 

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.

Monday Night: VFR. Breezy. Chance RA, slight chance SN.

Veterans Day: VFR. Windy with gusts up to 35 kt. Slight chance
RA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Updated 1 PM Thu:

Lowered remaining Gale Warnings on outer waters to Small Craft
Advisories as winds continue to diminish, but expect SCA
conditions through this evening on most of the waters, but
through tonight on outer waters due to lingering 5 ft+ seas.

High pressure building over New England tonight will move
offshore Friday, resulting in increasing SW winds that should
reach 25kt Friday afternoon and Friday night, with a low chance
of seeing marginal 34kt Gales on south coastal waters. Not
enough confidence though for Gale headlines right now.

Outlook /Monday through Tuesday/... 

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. 

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

Monday Night: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Areas of rough seas. Chance of rain. 

Veterans Day: Strong winds with gusts up to 40 kt. Rough seas
up to 13 ft. Chance of rain.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 PM EST this evening for 
     ANZ231>235-237-251.
     Small Craft Advisory until 6 AM EST Friday for ANZ250-254>256.

&&

$$

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