Lexington Weather

Current Conditions [‒] Current Conditions [+]

44.2°F Colder than last hour.

6.8°C

Chilly

Clear

Overnight: Lo 39 °F

Saturday: Hi 53 °F

Dew Point: 35.4°F Decreased 1.5°F since last hour.

Humidity: 71% Increased 1.0% since last hour.

Air Quality Index: 11

Good

(Ozone)

Barometer: 30.22 in Rising 0.03 inHg/hr

1023 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Friday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Overnight, Saturday, & Saturday Night through Friday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Oct 31, 2026 4:05am EDT

Overview:

- Breezy and cool conditions expected for Halloween.

- High pressure maintains quiet weather through at least Thursday with warmer than average highs in the 60s.

Overnight:

Clear

Lo 39 °F

Clear, with a low around 39. Northwest wind around 12 mph.

Saturday:

Sunny

Hi 53 °F

Sunny, with a high near 53. Northwest wind 5 to 10 mph.

Saturday Night:

Clear

Lo 30 °F

Clear, with a low around 30. Northwest wind around 3 mph.

Sunday:

Sunny

Hi 60 °F

Sunny, with a high near 60. West wind around 6 mph.

Sunday Night:

Mostly Clear

Lo 42 °F

Mostly clear, with a low around 42. Southwest wind around 5 mph.

Monday:

Sunny

Hi 68 °F

Sunny, with a high near 68. Southwest wind around 7 mph.

Monday Night:

Partly Cloudy

Lo 45 °F

Partly cloudy, with a low around 45. Southwest wind around 5 mph.

Tuesday:

Mostly Sunny

Hi 67 °F

Mostly sunny, with a high near 67. South wind around 6 mph.

Tuesday Night:

Mostly Cloudy

Lo 48 °F

Mostly cloudy, with a low around 48. South wind around 3 mph.

Wednesday:

Partly Sunny

Hi 69 °F

Partly sunny, with a high near 69. South wind 3 to 8 mph.

Wednesday Night:

Mostly Cloudy

Lo 51 °F

Mostly cloudy, with a low around 51. South wind around 5 mph.

Thursday:

Chance Rain Showers

Hi 69 °F

A chance of rain showers. Partly sunny, with a high near 69. South wind 5 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Thursday Night:

Chance Rain Showers

Lo 54 °F

A chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South wind around 6 mph. Chance of precipitation is 50%.

Friday:

Showers And T-Storms Likely

Hi 66 °F

Friday: Showers And Thunderstorms Likely

Showers and thunderstorms likely. Mostly cloudy, with a high near 66. South wind around 7 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 4am through Sun 2pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Oct 31, 2026 4:05am EDT

4:00am

Clear

43°F
Dew Pt 35°F
Wind Chill: 37°F
Wind from NW

NW 10 mph
Precip: 0%

5:00am

Clear

42°F
Dew Pt 34°F
Wind Chill: 36°F
Wind from NW

NW 12 mph
Precip: 0%

6:00am

Sunny

42°F
Dew Pt 32°F
Wind Chill: 36°F
Wind from NW

NW 10 mph
Precip: 0%

7:00am

Sunny

40°F
Dew Pt 30°F
Wind Chill: 33°F
Wind from NW

NW 10 mph
Precip: 0%

8:00am

Sunny

39°F
Dew Pt 28°F
Wind Chill: 32°F
Wind from NW

NW 10 mph
Precip: 0%

9:00am

Sunny

40°F
Dew Pt 30°F
Wind Chill: 33°F
Wind from NW

NW 10 mph
Precip: 0%

10:00am

Sunny

45°F
Dew Pt 30°F
Wind Chill: 40°F
Wind from N

N 10 mph
Precip: 0%

11:00am

Sunny

47°F
Dew Pt 30°F
Wind Chill: 42°F
Wind from N

N 10 mph
Precip: 0%

12:00pm

Sunny

49°F
Dew Pt 29°F
Wind Chill: 45°F
Wind from N

N 9 mph
Precip: 0%

1:00pm

Sunny

51°F
Dew Pt 29°F
Wind from N

N 8 mph
Precip: 0%

2:00pm

Sunny

52°F
Dew Pt 27°F
Wind from NW

NW 7 mph
Precip: 0%

3:00pm

Sunny

53°F
Dew Pt 26°F
Wind from NW

NW 6 mph
Precip: 0%

4:00pm

Sunny

52°F
Dew Pt 26°F
Wind from NW

NW 6 mph
Precip: 0%

5:00pm

Sunny

51°F
Dew Pt 26°F
Wind from NW

NW 5 mph
Precip: 0%

6:00pm

Mostly Clear

48°F
Dew Pt 28°F
Wind Chill: 47°F
Wind from NW

NW 3 mph
Precip: 0%

7:00pm

Clear

43°F
Dew Pt 30°F
Wind Chill: 41°F
Wind from NW

NW 3 mph
Precip: 0%

8:00pm

Clear

41°F
Dew Pt 29°F
Wind Chill: 39°F
Wind from NW

NW 3 mph
Precip: 0%

9:00pm

Clear

39°F
Dew Pt 29°F
Wind from NW

NW 2 mph
Precip: 0%

10:00pm

Clear

37°F
Dew Pt 29°F
Wind from NW

NW 2 mph
Precip: 0%

11:00pm

Clear

35°F
Dew Pt 28°F
Wind from NW

NW 2 mph
Precip: 0%

Sun
12:00am

Clear

34°F
Dew Pt 28°F
Wind from NW

NW 2 mph
Precip: 0%

Sun
1:00am

Clear

32°F
Dew Pt 28°F
Wind from NW

NW 2 mph
Precip: 0%

Sun
1:00am

Clear

32°F
Dew Pt 28°F
Wind from W

W 2 mph
Precip: 0%

Sun
2:00am

Clear

32°F
Dew Pt 28°F
Wind from W

W 2 mph
Precip: 0%

Sun
3:00am

Clear

30°F
Dew Pt 27°F
Wind Chill: 26°F
Wind from W

W 3 mph
Precip: 0%

Sun
4:00am

Clear

31°F
Dew Pt 27°F
Wind Chill: 28°F
Wind from W

W 3 mph
Precip: 0%

Sun
5:00am

Clear

30°F
Dew Pt 27°F
Wind Chill: 26°F
Wind from W

W 3 mph
Precip: 0%

Sun
6:00am

Sunny

30°F
Dew Pt 27°F
Wind Chill: 26°F
Wind from W

W 3 mph
Precip: 0%

Sun
7:00am

Sunny

31°F
Dew Pt 28°F
Wind Chill: 28°F
Wind from W

W 3 mph
Precip: 0%

Sun
8:00am

Sunny

37°F
Dew Pt 31°F
Wind Chill: 33°F
Wind from W

W 5 mph
Precip: 0%

Sun
9:00am

Sunny

44°F
Dew Pt 33°F
Wind Chill: 41°F
Wind from W

W 5 mph
Precip: 0%

Sun
10:00am

Sunny

50°F
Dew Pt 35°F
Wind Chill: 48°F
Wind from W

W 6 mph
Precip: 0%

Sun
11:00am

Sunny

53°F
Dew Pt 35°F
Wind from W

W 6 mph
Precip: 0%

Sun
12:00pm

Sunny

56°F
Dew Pt 35°F
Wind from W

W 6 mph
Precip: 0%

Sun
1:00pm

Sunny

58°F
Dew Pt 34°F
Wind from W

W 6 mph
Precip: 0%

Sun
2:00pm

Sunny

58°F
Dew Pt 34°F
Wind from W

W 6 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 310500
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
100 AM EDT Sat Oct 31 2026

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

&&

.KEY MESSAGES...

- Breezy and cool conditions expected for Halloween.


- High pressure maintains quiet weather through at least
  Thursday with warmer than average highs in the 60s.

&&

.DISCUSSION...
KEY MESSAGE 1...Breezy and cool conditions expected for
Halloween.

A cooler day is expected today as the post-frontal 
air mass moves in. Aloft, 925 mb temperatures cool to around 0C 
and NW winds continue, yet weaken with high pressure building 
in. Highs on Halloween will only reach the 50s as a result. 
Skies clear, and winds falling to or near calm Halloween night 
will allow for radiational cooling, dropping lows to the 20s and
low 30s for much of the region. As is normally the case, the 
coldest readings will be found across the far interior where 
lows fall to near 20 degrees. 

KEY MESSAGE 2...High pressure maintains quiet weather through 
at least Thursday with warmer than average highs in the 60s.

High pressure will remain firmly in control of southern New 
England's weather clear through at least mid to late week as this 
stretch of pleasant weather continues. A large high moving in from 
New York will initially move overhead on Sunday, replaced by another 
dropping south from Canada into Maine mid week. A weak trough will 
pass over the Canadian maritimes around Tuesday bringing the 
potential for some showers to northern New England but lack of 
moisture and dynamics over SNE will keep us dry. The next chance for 
a pattern change comes around late Thursday/Friday when a mid level 
trough may dig into the mid-Atlantic, but that is not a certainty at 
this point. EPS and GEFS ensembles paint a 70-90% chance of PWATS 
climbing above 1" Thursday-Saturday next week. Run to run 
variability shows less of a signal for QPF with the latest members 
showing probs of >0.5" of 24 hr QPF falling from 60-70% for the 12z 
runs to 30-50%. In the mean time, high pressure maintains a milder 
than average airmass overhead leading to comfortable highs in the 
60s all week. Winds should be light until Friday when our passing 
low would bring a period of gusty winds.


&&

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

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

06z TAF Update: 

Tonight...High confidence. 

Today and Tonight...High confidence.

VFR. NW to N winds around 10-13 kt with gusts in the low 20s kt
range, with gusts easing in the afternoon. Winds then go light 
WNW and to calm overnight.

Sunday...High confidence.

VFR. NW winds shifting to the W at 5-10 kt. Low confidence in a
sea breeze after 15z.

KBOS Terminal... High confidence in TAF. 

KBDL Terminal...High confidence in TAF.

Outlook /Sunday Night through Wednesday/...

Sunday Night: VFR. 

Monday: VFR. Breezy. 

Monday Night through Wednesday: VFR. 

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Saturday Night...High confidence. 

SCAs remain in effect through 18z this afternoon given NW winds
gusting to 30 kt through tonight and seas to 5 ft into this
morning for the outer waters. While winds gradually diminish
through the day seas will generally be between 4-5 feet for the
outer waters. Heading into this evening and overnight, winds 
and seas diminish; winds generally fall to 10 kt or less and 
seas decrease to around 2-3 ft. Tranquil conditions on Sunday
with winds falling to 10-15 kt and 2-3 ft seas.

Outlook /Sunday Night through Wednesday/...

Sunday Night: Winds less than 25 kt. 

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

Monday Night through Wednesday: Winds less than 25 kt. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 AM EDT this morning for 
     ANZ230>237-251-255-256.
     Small Craft Advisory until 2 PM EDT this afternoon for ANZ250-
     254.

&&

$$

DISCUSSION...BW/FT
AVIATION...BW/FT
MARINE...BW/FT

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