Lexington Weather

Lexington, Massachusetts, USA

54°F

4/11/2026 12:36am

Lexington Conditions: Overcast
Temperature: 54.3°F / 12.4°C
Dew Point: 35.1°F
Relative Humidity: 48%
Wind: Calm, 10-min avg: Calm, gust: 3 mph
Barometer: 30.00 in Steady
Visibility: 10 miles
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 071119
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
719 AM EDT Tue Apr 7 2026

.WHAT HAS CHANGED...
We increased northwest winds gusts later today into this evening 
and also issued small craft headlines for all our waters. 
Otherwise...no significant changes made to the forecast.

&&

.KEY MESSAGES...

- Scattered rain & snow showers today with perhaps some graupel too. 
  Some locations in the high terrain may see the ground whitened 
  with perhaps up to an inch in parts of the Berks this morning. 
  Becoming windy later today into this evening.

- Dry & cold tonight with windy conditions this evening. Chilly on Wed
  especially near the coast. Lows tonight in the upper teens and 20s. 
  Highs Wed in the 40s/near 50...but upper 30s/lower 40s along parts of 
  the immediate eastern MA coast. 

- Mainly dry & milder weather Thu into the weekend with highs
  generally in the 50s Thu & 60s Fri/Sat/Sun at least away from
  coastal sea breezes. Highs may reach the 70s on Mon ahead of a
  cold front. Dry weather dominates outside a few brief showers
  possible late Fri/early Sat and maybe sometime Mon.

&&

.DISCUSSION...
KEY MESSAGE 1...Scattered rain & snow showers today with perhaps 
some graupel too. Some locations in the high terrain may see the 
ground whitened with perhaps up to an inch in parts of the Berks 
this morning. Becoming windy later today into this evening.

A strong shortwave/cold pool aloft will cross the region today. In 
fact...500T below -30C will create modest instability. Model cross 
sections indicating enough moisture in the lowest 2 KM of the 
atmosphere combined with 1000 to 700 mb lapse rates reaching between 
8C to 9C! This may be enough to result in a few hundred J/KG of 
Cape. While today will not be a washout...scattered rain and snow 
showers will impact the region at times. 

Putting all of that together...expect a round of scattered rain and 
snow showers to cross the region through mid-late morning. This as a 
shortwave and associated mid level warm front crosses the region. 
Ptype may be a mixture of rain/snow showers in the lower elevations 
with no accumulations. Ptype will mainly in the form of snow showers 
in the high terrain. In fact...a few heavier snow showers may whiten 
the ground in some portions of the higher terrain with perhaps up to 
an inch or so of snow in parts of the Berks. Any brief minor travel 
impacts early this morning should be confined to the highest terrain 
of the Berks and northern Worcester Hills. And even if there are 
some brief impacts in the highest terrain...they will be short-lived 
as temps rise by late in the morning.

Otherwise...the first main shield of precipitation should depart by 
mid-late morning. However...an approaching cold front coupled with 
500T below -30C will result in a self destructive atmosphere. So 
despite some peeks of sunshine emerging...scattered rain and snow 
showers will re-develop late this morning and afternoon ahead of an 
approaching cold front. In fact...given a few hundred J/KG of Cape 
and temps aloft may see some graupel and perhaps even a rumble of 
thunder. 

Winds will shift to the northwest behind the cold front later today 
into this evening. It will also become windy with northwest wind 
gusts of 25 to 35 mph developing with a few gusts up to 40 mph.

KEY MESSAGE 2...Dry & cold tonight with windy conditions this 
evening. Chilly on Wed especially near the coast. Lows tonight in 
the upper teens and 20s. Highs Wed in the 40s/near 50...but upper 
30s/lower 40s along parts of the  immediate eastern MA coast. 

Northwest wind gusts of 25 to 35 mph this evening with a few gusts 
up to 40 mph will usher in dry but unseasonably cold temperatures 
tonight. These winds should begin to slacken overnight as a strong 
high pressure approaching 1040 mb builds in from the west. Low temps 
will drop into the 20s tonight...but some of the normally coldest 
spots in western MA may see lows drop into the upper teens. 

Large high pressure nearing 1040 mb centers itself over our region 
on Wed. This will result in plenty of sunshine...but rather limited 
mixing will result in a cool/chilly day especially near the coast. 
Highs will reach the 40s to near 50 inland...but sea breezes will 
develop near the immediate coast holding high temps in the upper 30s 
and lower 40s! 

KEY MESSAGE 3...Mainly dry & milder weather Thu into the weekend 
with highs generally in the 50s Thu & 60s Fri/Sat/Sun at least away 
from coastal sea breezes. Highs may reach the 70s on Mon ahead of a 
cold front. Dry weather dominates outside a few brief showers late 
Fri/early Sat and maybe sometime Mon. 

Upper trough over the Northeast shifts east of the region late this 
week. Westerly flow with above normal height fields are depicted on 
all the ensemble guidance. This will result in moderating temps Thu 
and especially by Fri. Many locations should see highs reach the 50s 
Thu with 60s common on Fri/Sat/Sun. Now it will be cooler at times 
along the immediate coast with typical sea breezes/modified marine 
influences this time of year...but overall expect above normal 
temps. In fact...guidance is showing decent probabilities that highs 
may reach into the 70s by Mon out ahead of an approaching cold front.

A weak cold front crosses the region late Fri into early Sat with 
perhaps a few brief showers. Perhaps a few brief warm advection 
showers sometime Mon too. Otherwise...dry weather dominates given 
the lack of much synoptic scale forcing.

&&

.AVIATION /12Z TUESDAY THROUGH SATURDAY/...
Forecaster Confidence Levels...

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

12z TAF Update...Moderate confidence today and high confidence 
tonight and Wednesday. 

Scattered rain and snow showers at times today...but much of the day 
will be dry at a given location. Conditions will lower to mainly 
MVFR levels this morning into the afternoon across much of eastern 
MA & RI with perhaps even brief IFR conditions between 16-19z.
 
Across the interior...VFR ceilings will probably dominate but 
brief MVFR conditions are possible too especially for a few 
hours this morning. Runways will remain wet even where there is 
snow in the air given relatively warm boundary layer 
temperatures. It is possible that there is some graupel too this
afternoon given the cold temps aloft. 

Winds will be light from the NW across the interior this morning and 
from the E at 5-12 knots along the coast. Winds will be turning NW 
later today from west to east behind a cold front and become quite 
gusty. NW winds will then gust between 25 and 30 knots gusts with a 
few brief gusts around 35 knots possible behind the cold late today 
into this evening...before gradually diminishing after midnight. Any 
lingering MVFR conditions near the coast will become VFR by early 
evening. 

VFR conditions continue on Wed with light N wind becoming light SE 
with sea breezes developing on much of the immediate coast. 

KBOS Terminal...Moderate confidence in TAF. Looking for a windshift 
from the E to the NW after 19z/20z. NW wind gusts of 25-30 knots 
develop with brief gusts up to 35 knots possible. 

KBDL Terminal...Moderate confidence in TAF. 
e gradually diminishing aft
Outlook /Wednesday Night through Saturday/...

Wednesday night through Thursday Night: VFR. Breezy. 

Friday: VFR. 

Friday Night: VFR. Slight chance SHRA.

Saturday: VFR.

&&

.MARINE...
Forecaster Confidence Levels...

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

Today through Wednesday...High confidence.

Winds/seas will remain below small craft advisory thresholds this 
morning...but a cold front will cross the waters later today. Behind 
this front...northwest winds will gust between 25 and 30 knots with 
a few gusts up to 35 knots late this afternoon and especially this 
evening. Small craft headlines posted for all waters. Conditions may 
flirt with gales for an hour or two this evening...but felt small 
craft headlines were more representative. Winds/seas will drop below 
small craft advisory thresholds Wed morning as large high pressure 
builds in from the west. 

Outlook /Wednesday Night through Saturday/...

Wednesday Night through Thursday Night: Winds less than 25 kt. 

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

Friday Night: Winds less than 25 kt. Seas up to 5 ft. Slight
chance of rain showers. 

Saturday: Winds less than 25 kt. Seas up to 5 ft.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 4 PM this afternoon to 5 AM EDT 
     Wednesday for ANZ230-236.
     Small Craft Advisory from 4 PM this afternoon to 8 AM EDT 
     Wednesday for ANZ231>234.
     Small Craft Advisory from 2 PM this afternoon to 8 AM EDT 
     Wednesday for ANZ235-237-255-256.
     Small Craft Advisory from 5 PM this afternoon to 8 AM EDT 
     Wednesday for ANZ250-251-254.

&&

$$

DISCUSSION...Frank
AVIATION...Frank/Dooley
MARINE...Frank