Lexington Weather

Current Conditions [‒] Current Conditions [+]

56.5°F Colder than last hour.

13.6°C

Cool

Few Clouds

Overnight: Lo 54 °F

Friday: Hi 69 °F

Dew Point: 52.9°F Decreased 0.2°F since last hour.

Humidity: 88%

Air Quality Index: 29

Good

(Fine Particles)

Barometer: 29.87 in S

1012 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Thursday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 1 mph

OTHER PERSONAL WEATHER STATIONS

Alerts / Advisories [‒] Alerts / Advisories [+]

Southeast Middlesex County, MA - Special Weather Statement
- SEE ALL NEARBY ALERTS -

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Fri Oct 30, 2026 1:28am EDT

Overview:

- A much drier air mass arrives today as a cold front pushes offshore. Expect windy conditions this afternoon behind the front.

- Yet more high pressure arrives this weekend into much of next week with a moderating temperature trend. The next bonafide chance for widespread precipitation arrives later next week.

Special Weather Statement

Overnight:

Mostly Cloudy

Lo 54 °F

Mostly cloudy, with a low around 54. Southwest wind around 8 mph.

Friday:

Mostly Sunny

Hi 69 °F

Mostly sunny. High near 69, with temperatures falling to around 63 in the afternoon. West wind 7 to 12 mph, with gusts as high as 25 mph.

Friday Night:

Clear

Lo 40 °F

Clear, with a low around 40. Northwest wind around 10 mph, with gusts as high as 24 mph.

Saturday:

Sunny

Hi 56 °F

Sunny, with a high near 56. Northwest wind 3 to 9 mph.

Saturday Night:

Clear

Lo 31 °F

Clear, with a low around 31. Northwest wind around 3 mph.

Sunday:

Sunny

Hi 61 °F

Sunny, with a high near 61. West wind around 6 mph.

Sunday Night:

Mostly Clear

Lo 40 °F

Mostly clear, with a low around 40. Southwest wind around 6 mph.

Monday:

Mostly Sunny

Hi 67 °F

Mostly sunny, with a high near 67. Southwest wind around 8 mph.

Monday Night:

Partly Cloudy

Lo 47 °F

Partly cloudy, with a low around 47. West wind around 5 mph.

Tuesday:

Partly Sunny

Hi 65 °F

Partly sunny, with a high near 65. Northeast wind 3 to 7 mph.

Tuesday Night:

Mostly Cloudy

Lo 46 °F

Mostly cloudy, with a low around 46. East wind around 6 mph.

Wednesday:

Partly Sunny

Hi 66 °F

Partly sunny, with a high near 66. Southeast wind 3 to 7 mph.

Wednesday Night:

Mostly Cloudy then Slight Chance Rain Showers

Lo 50 °F

A slight chance of rain showers after 5am. Mostly cloudy, with a low around 50. Southeast wind around 5 mph.

Thursday:

Chance Rain Showers

Hi 67 °F

A chance of rain showers. Partly sunny, with a high near 67. Southeast wind 6 to 9 mph, with gusts as high as 23 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 5am through Sat 4pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Fri Oct 30, 2026 1:28am EDT

5:00am

Mostly Cloudy

55°F
Dew Pt 51°F
Wind from SW

SW 7 mph
Precip: 0%

6:00am

Mostly Cloudy

55°F
Dew Pt 51°F
Wind from SW

SW 7 mph
Precip: 0%

7:00am

Cloudy

54°F
Dew Pt 51°F
Wind from SW

SW 7 mph
Precip: 0%

8:00am

Mostly Sunny

56°F
Dew Pt 52°F
Wind from W

W 7 mph
Precip: 0%

9:00am

Sunny

57°F
Dew Pt 53°F
Wind from W

W 7 mph
Precip: 0%

10:00am

Sunny

62°F
Dew Pt 53°F
Wind from W

W 8 mph
Precip: 0%

11:00am

Sunny

66°F
Dew Pt 52°F
Wind from W

W 9 mph
Precip: 0%

12:00pm

Sunny

68°F
Dew Pt 50°F
Wind from W

W 10 mph
Precip: 0%

1:00pm

Sunny

68°F
Dew Pt 47°F
Wind from W

W 12 mph
Precip: 0%

2:00pm

Sunny

69°F
Dew Pt 44°F
Wind from NW

NW 12 mph
Precip: 0%

3:00pm

Sunny

66°F
Dew Pt 42°F
Wind from NW

NW 12 mph
Precip: 0%

4:00pm

Sunny

65°F
Dew Pt 40°F
Wind from NW

NW 12 mph
Precip: 0%

5:00pm

Sunny

63°F
Dew Pt 38°F
Wind from NW

NW 12 mph
Precip: 0%

6:00pm

Mostly Clear

57°F
Dew Pt 38°F
Wind from NW

NW 10 mph
Precip: 0%

7:00pm

Clear

54°F
Dew Pt 38°F
Wind from NW

NW 10 mph
Precip: 0%

8:00pm

Clear

53°F
Dew Pt 39°F
Wind from NW

NW 9 mph
Precip: 0%

9:00pm

Clear

51°F
Dew Pt 38°F
Wind from NW

NW 9 mph
Precip: 0%

10:00pm

Clear

50°F
Dew Pt 38°F
Wind Chill: 47°F
Wind from NW

NW 8 mph
Precip: 0%

11:00pm

Clear

48°F
Dew Pt 38°F
Wind Chill: 44°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
12:00am

Clear

47°F
Dew Pt 38°F
Wind Chill: 43°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
1:00am

Clear

46°F
Dew Pt 37°F
Wind Chill: 42°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
2:00am

Clear

46°F
Dew Pt 38°F
Wind Chill: 42°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
3:00am

Clear

45°F
Dew Pt 36°F
Wind Chill: 41°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
4:00am

Clear

44°F
Dew Pt 34°F
Wind Chill: 39°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
5:00am

Clear

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

NW 10 mph
Precip: 0%

Sat
6:00am

Sunny

42°F
Dew Pt 33°F
Wind Chill: 36°F
Wind from NW

NW 9 mph
Precip: 0%

Sat
7:00am

Sunny

40°F
Dew Pt 32°F
Wind Chill: 35°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
8:00am

Sunny

40°F
Dew Pt 31°F
Wind Chill: 35°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
9:00am

Sunny

42°F
Dew Pt 31°F
Wind Chill: 36°F
Wind from NW

NW 9 mph
Precip: 0%

Sat
10:00am

Sunny

46°F
Dew Pt 31°F
Wind Chill: 41°F
Wind from NW

NW 9 mph
Precip: 0%

Sat
11:00am

Sunny

48°F
Dew Pt 30°F
Wind Chill: 44°F
Wind from NW

NW 9 mph
Precip: 0%

Sat
12:00pm

Sunny

50°F
Dew Pt 29°F
Wind Chill: 47°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
1:00pm

Sunny

53°F
Dew Pt 28°F
Wind from NW

NW 8 mph
Precip: 0%

Sat
2:00pm

Sunny

54°F
Dew Pt 27°F
Wind from NW

NW 7 mph
Precip: 0%

Sat
3:00pm

Sunny

54°F
Dew Pt 26°F
Wind from NW

NW 6 mph
Precip: 0%

Sat
4:00pm

Sunny

55°F
Dew Pt 26°F
Wind from NW

NW 5 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 300539
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
139 AM EDT Fri Oct 30 2026

.WHAT HAS CHANGED...
Issued a Small Craft Advisory for the waters valid from this 
afternoon through Saturday morning. 

&&

.KEY MESSAGES...

- A much drier air mass arrives today as a cold front pushes 
  offshore. Expect windy conditions this afternoon behind the 
  front. 


- Yet more high pressure arrives this weekend into much of next
  week with a moderating temperature trend. The next bonafide 
  chance for widespread precipitation arrives later next week. 

&&

.DISCUSSION...
KEY MESSAGE 1...A much drier air mass arrives today as a cold front 
pushes offshore. Expect windy conditions this afternoon behind the 
front. 

Cold front quickly pushes offshore early this morning. It will be 
moisture starved with a very dry antecedent air mass. Will see 
increasing winds and falling dewpoints this afternoon as the 
boundary layer becomes well-mixed. The combination of falling 
relative humidity values (>40%) and gusty winds between 25 and 35 
mph will pair to increase the fire risk. While we typically look for 
RH values at 35 percent and below, the prolonged dry stretch and 
leaf drop prior to today's elevated wind along with input from state 
forestry and fire weather partners has prompted fire weather SPS's 
for the entire region. In terms of temperatures, expect a warmer day 
along the I-95 corridor with highs near 70 degrees. Further inland, 
locations will see cooler temps as diabatic warming competes with 
moderate to strong cold air advection.  A sustained pretty tight 
pressure gradient continues into Friday evening, which casts some 
uncertainty on low temperatures. We opted to keep temps from the mid 
30s to the low/mid 40s, highest towards the RI/eastern MA coasts 
where winds will take longer to slacken off, and coolest readings 
inland. 

KEY MESSAGE 2...Yet more high pressure arrives this weekend into 
much of next week with a moderating temperature trend. The next 
bonafide chance for widespread precipitation arrives later next 
week. 

A series of high pressures will dominate the weather pattern over 
southern New England this weekend clear through much of next week. 
The post frontal airmass kicks off the weekend much cooler as 925 mb 
temps drop from 12-15C Friday to 0-3C Saturday. Under dry NW flow 
beneath a high building in from New York we'll see high temperatures 
climb just into the mid to upper 50s on Halloween with evening temps 
in the 40s. Fortunately, by then the pressure gradient should have 
lessened enough that winds will be light. The light winds and clear 
post-frontal skies allow for radiational cooling Halloween night 
with lows in the 20s inland and 30s across the coastal plain. 
Similar weather picture on Sunday albeit a bit warmer as a weak 
southwesterly return flow develops as the center of high pressure 
moves offshore. 

A mid-level trough looks to pass well to our northeast around 
Tuesday but lack of moisture and the transient nature of the feature 
will likely keep rain away before another high pressure takes hold 
Wednesday into Thursday keeping dry and warmer than average weather 
in place until the pattern may break down moving into next weekend. 
Guidance is still largely split on the eventual evolution of the 
upper level pattern with a wide range of solutions possible. The 
most aggressive guidance wrt to a pattern change is the GFS which 
depicts a deep shortwave trough over the eastern CONUS by Thursday. 


&&

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

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

06z TAF Update: 

Today and Tonight: High confidence in TAF. 

VFR. Gusty windshift to NW 14-18 kt with gusts 25-30 kt during 
at least the daytime hours. Guidance has trended towards
maintaining breezy conditions through much of the overnight at
most TAF sites.

KBOS Terminal... High confidence in TAF. 

KBDL Terminal...High confidence in TAF.

Outlook /Saturday through Tuesday/...

Saturday: VFR. Breezy. 

Saturday Night through Sunday Night: VFR. 

Monday: VFR. Breezy. 

Monday Night through Tuesday: VFR. 

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Friday Night: High confidence. 

SCA issued for the eastern near coastal and outer waters. SCA in
effect from 18z Friday to 12z Saturday for the near coastal
waters. SCA conditions linger a bit longer for the outer waters
where the advisory is in effect through 18z Saturday. SCA
conditions will be driven by a cold front which brings a period
of gusty NW winds between 25-30 kt this afternoon into Saturday
morning. Seas gradually build to 3-5 ft this afternoon and
maintain through much of the day on Saturday. Conditions
gradually improve Saturday evening and overnight. 


Outlook /Saturday Night through Tuesday/...

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

Sunday through Tuesday: Winds less than 25 kt. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 2 PM this afternoon to 8 AM EDT 
     Saturday for ANZ231-232-255-256.
     Small Craft Advisory from 2 PM this afternoon to 2 PM EDT 
     Saturday for ANZ250-254.

&&

$$

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

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