Old Res Weather

Lexington, Massachusetts, USA

35°F

2/16/2025 7:17pm

Lexington Conditions: Clear
Temperature: 35.1°F / 1.7°C
Dew Point: 32.4°F
Relative Humidity: 90%
Wind: Calm, 10-min avg: Calm, gust: None
Barometer: 29.00 in Falling Slowly
Visibility: 10 miles
Rain Today: 0.01 in
UV Index: $VPuv None

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 250010
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
810 PM EDT Sat Oct 24 2026

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

&&

.KEY MESSAGES...

- Prolonged stretch of dry weather across southern New England.
  Moderating afternoon temperatures this weekend, though chilly
  mornings will bring widespread frost away from the immediate 
  coast.

&&

.DISCUSSION...
KEY MESSAGE 1...Prolonged stretch of dry weather across southern New 
England. Moderating afternoon temperatures this weekend, though 
chilly mornings will bring widespread frost away from the immediate 
coast.

Strong high pressure continues to sit over southern New England. 
Good radiational cooling overnight with widespread frost can be 
expected tonight and Sunday night. Lows tonight may fall well into 
the 20s in the higher elevations of the interior tonight along with 
other spots that radiate quite well. Closer to the coasts and 
towards Worcester, expect lows in the 40s and upper 30s. 925 mb 
temperatures improve to around 10C overnight and continue Monday, 
then to around 12C overnight Monday. Lows Sunday night won't be
as low as tonight's as a result, but expect temperatures to
still fall into the upper 20s in the interior and generally
settle around freezing in areas that radiate out well, with 40s
and upper 30s still expected in coastal areas. Highs Monday 
will improve to the mid to upper 60s and clear skies are 
expected to continue.

A prolonged stretch of dry but pleasant autumn weather is in store 
for Southern New England that continues into a large portion of
the upcoming workweek. Expansive area of surface high pressure 
of around 1030-1034 mb will remain anchored across the Northeast
and mid- Atlantic region, with mild days and cool nights with 
strong diurnal temperature ranges. About the only nuanced 
difference is that a cold front sags southward Monday night into
Tuesday with a cooler northern-stream airmass filtering 
southward; but the front is moisture-starved and only seems 
capable of producing some enhanced cloudiness Monday evening and
a cooldown in high temps moving into next week. Mildest days 
look to be this weekend with temperatures in the mid to upper 
60s, but there could be a shot at 70 degrees with several days 
of dry weather serving as a mild feedback mechanism for 
overachieving maximum temps over guidance. Highs then cool off 
into the mid 50s to low 60s for early next week as the cooler 
lower-level airmass works it way in (925 mb temps dip to around 
+2 to +4C), only modifying toward mid to late next week.

&&

.AVIATION /00Z SUNDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...

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

00z TAF Update...High confidence.

VFR conditions persist this weekend. Light NW winds continue
along with weak sea breezes along the eastern MA coasts.
Calm/light W winds tonight. Winds shift more SW and remain below
10 kt for Sunday, then calm to light SW winds Sunday night.

KBOS Terminal...High confidence in TAF. Seabreeze could develop
again between ~16-23z.

KBDL Terminal...High confidence in TAF.

Outlook /Monday through Thursday/...

Monday: VFR. 

Monday Night through Tuesday: VFR. Breezy. 

Tuesday Night through Wednesday Night: VFR. 

Thursday: VFR. Breezy.

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Sunday Night...High confidence.

High pressure remains in control, bringing dry weather and generally 
favorable marine conditions for the next several days. Light NW 
winds continue tonight, then shift more SW in the afternoon Sunday. 
These continue into Sunday night as well. Despite these light winds, 
seas in the outer waters remain elevated through tonight at 4-5 ft. 
These are expected to diminish by Sunday morning.

Outlook /Monday through Thursday/...

Monday: Winds less than 25 kt. 

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

Tuesday: Winds less than 25 kt. Areas of rough seas. 

Tuesday Night through Wednesday: Winds less than 25 kt. Seas up
to 5 ft. 

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

Thursday: Winds less than 25 kt.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 6 AM EDT Sunday for ANZ254-255.

&&

$$

DISCUSSION...Loconto/Hrencecin
AVIATION...Loconto/Hrencecin
MARINE...Loconto/Hrencecin