Lexington Weather

Lexington, Massachusetts, USA

68°F

6/8/2026 10:58am

Lexington Conditions: Clear
Temperature: 67.5°F / 19.7°C
Dew Point: 53.6°F
Relative Humidity: 61%
Wind: Calm, 10-min avg: Calm, gust: None
Barometer: 30.18 in Steady
Visibility: 10 miles
Rain Today: 0.01 in

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 020543
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
143 AM EDT Tue Jun 2 2026

.WHAT HAS CHANGED...
No significant changes to the forecast.

&&

.KEY MESSAGES...

- Quiet and dry stretch of weather today through the end of the
  work week.

- Potentially unsettled and cooler conditions this weekend into
  early next week.

&&

.DISCUSSION...
KEY MESSAGE 1...Quiet and dry stretch of weather today through the 
end of the work week.

Fairly high confidence in dry weather this week as surface high 
pressure and mid-level ridging develop across the Northeast. Right 
on cue following a cool and damp weekend, warmer and drier weather 
returns to southern New England. There have not been any wholesale 
changes to the forecast, as we continue to anticipate a period of 
dry and warmer weather today through the end of the work week. 

Today, the mid-level trough and shortwave push east. While PWATs are 
quite low, the combination of modest mid-level lift, a cold pool 
aloft, and a few hundred J/kg of CAPE suggests a brief and very 
isolated pop-up shower cannot be ruled out. Otherwise, expect 
diurnal cloud development this afternoon due to daytime heating and 
deep boundary layer mixing. With 850 mb temperatures around +8C, 
highs should reach the lower to middle 70s. 

Mid-level ridging and surface high pressure develop Wednesday 
through Friday, with increasing 850 mb temperatures between +13C and 
+15C Thursday and Friday. While these temperatures alone would 
support highs in the lower to middle 80s, west-northwest flow aloft 
descending from the higher terrain of western Massachusetts should 
promote compressional warming/downsloping. This will likely nudge 
highs into the upper 80s, perhaps near 90 degrees, especially Friday 
afternoon across the Connecticut River Valley, where probabilities 
exceed 75 percent.

KEY MESSAGE 2...Potentially unsettled and cooler conditions this 
weekend into early next week.

Looking toward the weekend, forecast confidence lowers due to 
variability among guidance. The broad thinking remains that surface 
high pressure shifts offshore, mid-level heights fall, and cooler 
temperatures advect aloft.

As noted by a previous forecaster, there is a chance much of 
Saturday remains dry. However, there are enough signals to warrant 
at least a mention of scattered afternoon showers. By Sunday, a low 
pressure system passing near a nearly stalled frontal boundary 
presents a more favorable setup for showers. This front could linger 
into early next week, continuing at least some risk for showers.

This will clearly be something to watch, as we appear to remain in 
an unfortunate pattern of cooler and soggier weekends across the 
Northeast. Temperatures should begin trending cooler Saturday, 
though the cooldown is expected to become more noticeable Sunday 
into early next week.

&&

.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
Forecaster Confidence Levels...

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

06z TAF Update:

Through 12z...High confidence.

VFR. Light to calm winds.

Today through Wednesday...High confidence.

VFR. A low chance for a brief (less than 20 percent), isolated 
shower mainly between 19z-01z, otherwise, dry conditions today 
through Wednesday. Winds today are from the northwest at 8 to 12
knots for interior locations, while coastal sites experience an
onshore wind from the south to southeast. Overnight, light to 
calm winds prevail, followed by light northwest winds across 
interior locations as high pressure settles into the region on 
Wednesday. Coastal locations will have a light onshore wind.

KBOS...High confidence in TAF.

VFR through the TAF period. A sea breeze develops between 15-17z, 
followed by light winds overnight and then a weak sea breeze on 
Wednesday.

KBDL...High confidence in TAF.

VFR with northwest winds today and Wednesday, with light to calm 
winds overnight.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: VFR. 

Thursday: VFR. Breezy. 

Thursday Night: VFR. 

Friday: VFR. Breezy. 

Friday Night: VFR. 

Saturday: VFR. Chance SHRA, slight chance TSRA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Today through Wednesday...High confidence.

In general, conditions today through Wednesday will support 
tranquil boating conditions as surface high pressure remains the
dominant feature. Dry weather prevails as well, though there is
a very low chance of a pop-up shower mainly this afternoon into
the early evening (less than 20 percent), otherwise, dry 
conditions persist into Wednesday. Winds today are generally 
from the south to south-southwest at 10 to 15 knots, becoming 
light and somewhat variable on Wednesday as high pressure 
settles over the region. However, colder sea surface 
temperatures relative to warmer land temperatures will promote 
onshore winds across waters near the immediate coast. Seas 
generally 2 to 4 feet today, subsiding to 1 to 3 feet on 
Wednesday.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: Winds less than 25 kt. 

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

Thursday Night through Friday Night: Winds less than 25 kt.
Seas up to 5 ft. 

Saturday: Winds less than 25 kt. Seas locally approaching 5 ft.
Slight chance of rain showers. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...None.

&&

$$
Dooley