Lexington Weather

Current Conditions [‒] Current Conditions [+]

46.6°F Colder than last hour.

8.1°C

Chilly

Overcast

This Afternoon: Hi 51 °F

Tonight: Lo 40 °F

Dew Point: 36.1°F

Humidity: 67% Increased 2.0% since last hour.

Air Quality Index: 55

Moderate

(Fine Particles)

Barometer: 29.55 in S

1001 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Tuesday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

Expected Snow [‒] Expected Snow [+]

Tap Click image to go to NWS winter weather page

Trace of snow expected in Lexington.

Forecast [‒] Forecast [+]

Daily Forecast
Hourly Forecast

NWS Weather Forecast -
This Afternoon, Tonight, & Thursday through Tuesday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Wed Jan 14, 2026 1:13pm EST

This Afternoon:

Slight Chance Light Rain

Hi 51 °F

A slight chance of rain after 5pm. Mostly cloudy, with a high near 51. South wind around 7 mph. Chance of precipitation is 20%.

Tonight:

Light Rain Likely

Lo 40 °F

A chance of rain before midnight, then rain likely and patchy fog. Cloudy, with a low around 40. South wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Thursday:

Patchy Fog then Mostly Cloudy

Hi 48 °F

Patchy fog and a slight chance of rain before 11am. Mostly cloudy. High near 48, with temperatures falling to around 39 in the afternoon. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Thursday Night:

Partly Cloudy

Lo 18 °F

Partly cloudy, with a low around 18. West wind around 12 mph, with gusts as high as 29 mph.

Friday:

Mostly Sunny

Hi 31 °F

Mostly sunny, with a high near 31. West wind 8 to 13 mph, with gusts as high as 32 mph.

Friday Night:

Mostly Cloudy then Slight Chance Light Snow

Lo 25 °F

A slight chance of snow after 3am. Mostly cloudy, with a low around 25. Southwest wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Saturday:

Slight Chance Light Snow then Chance Rain And Snow

Hi 41 °F

A slight chance of snow before 9am, then a chance of rain and snow. Mostly cloudy, with a high near 41. Southwest wind around 8 mph. Chance of precipitation is 40%.

Saturday Night:

Chance Light Rain then Slight Chance Light Snow

Lo 28 °F

A chance of rain before 2am, then a slight chance of snow between 2am and 4am. Mostly cloudy, with a low around 28. Southwest wind around 6 mph. Chance of precipitation is 30%.

Sunday:

Slight Chance Light Snow

Hi 36 °F

A slight chance of snow after 11am. Mostly cloudy, with a high near 36. West wind around 8 mph.

Sunday Night:

Slight Chance Light Snow

Lo 20 °F

A slight chance of snow before 3am. Mostly cloudy, with a low around 20. West wind around 7 mph.

M.L. King Jr. Day:

Mostly Sunny

Hi 32 °F

Mostly sunny, with a high near 32. West wind 7 to 10 mph.

Monday Night:

Partly Cloudy

Lo 16 °F

Partly cloudy, with a low around 16. Southwest wind around 8 mph.

Tuesday:

Mostly Sunny

Hi 24 °F

Mostly sunny, with a high near 24. West wind 8 to 12 mph, with gusts as high as 23 mph.

Tuesday Night:

Mostly Clear

Lo 12 °F

Mostly clear, with a low around 12. West wind around 10 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 5pm through Fri 4am

Issued by:
National Weather Service Boston / Norton, MA
Updated Wed Jan 14, 2026 1:13pm EST

5:00pm

Slight Chance Light Rain

48°F
Dew Pt 36°F
Wind Chill: 46°F
Wind from S

S 5 mph
Precip: 16%

6:00pm

Slight Chance Light Rain

46°F
Dew Pt 36°F
Wind Chill: 44°F
Wind from S

S 5 mph
Precip: 19%

7:00pm

Slight Chance Light Rain

44°F
Dew Pt 36°F
Wind Chill: 42°F
Wind from S

S 5 mph
Precip: 24%

8:00pm

Chance Light Rain

43°F
Dew Pt 37°F
Wind Chill: 41°F
Wind from S

S 3 mph
Precip: 30%

9:00pm

Chance Light Rain

42°F
Dew Pt 37°F
Wind Chill: 40°F
Wind from S

S 3 mph
Precip: 40%

10:00pm

Chance Light Rain

43°F
Dew Pt 38°F
Wind Chill: 41°F
Wind from S

S 3 mph
Precip: 48%

11:00pm

Chance Light Rain

42°F
Dew Pt 39°F
Wind Chill: 40°F
Wind from S

S 3 mph
Precip: 53%

Thu
12:00am

Light Rain Likely

42°F
Dew Pt 39°F
Wind Chill: 40°F
Wind from S

S 3 mph
Precip: 61%

Thu
1:00am

Light Rain Likely

41°F
Dew Pt 39°F
Wind Chill: 39°F
Wind from S

S 3 mph
Precip: 64%
Rain: 0.01 in

Thu
2:00am

Light Rain Likely

41°F
Dew Pt 40°F
Wind Chill: 39°F
Wind from S

S 3 mph
Precip: 55%

Thu
3:00am

Light Rain Likely

42°F
Dew Pt 40°F
Wind Chill: 40°F
Wind from S

S 3 mph
Precip: 56%

Thu
4:00am

Chance Light Rain

42°F
Dew Pt 40°F
Wind Chill: 40°F
Wind from S

S 3 mph
Precip: 33%

Thu
5:00am

Chance Light Rain

41°F
Dew Pt 40°F
Wind Chill: 38°F
Wind from S

S 5 mph
Precip: 28%

Thu
6:00am

Patchy Fog

40°F
Dew Pt 40°F
Wind Chill: 37°F
Wind from S

S 5 mph
Precip: 20%

Thu
7:00am

Patchy Fog

42°F
Dew Pt 41°F
Wind Chill: 39°F
Wind from S

S 5 mph
Precip: 17%

Thu
8:00am

Patchy Fog

42°F
Dew Pt 41°F
Wind Chill: 38°F
Wind from S

S 6 mph
Precip: 14%

Thu
9:00am

Patchy Fog

44°F
Dew Pt 42°F
Wind Chill: 40°F
Wind from S

S 6 mph
Precip: 14%

Thu
10:00am

Patchy Fog

45°F
Dew Pt 41°F
Wind Chill: 40°F
Wind from SW

SW 8 mph
Precip: 11%

Thu
11:00am

Mostly Cloudy

47°F
Dew Pt 40°F
Wind Chill: 43°F
Wind from SW

SW 9 mph
Precip: 5%

Thu
12:00pm

Partly Sunny

46°F
Dew Pt 40°F
Wind Chill: 42°F
Wind from SW

SW 10 mph
Precip: 3%

Thu
1:00pm

Mostly Cloudy

46°F
Dew Pt 38°F
Wind Chill: 41°F
Wind from SW

SW 10 mph
Precip: 1%

Thu
2:00pm

Partly Sunny

46°F
Dew Pt 36°F
Wind Chill: 41°F
Wind from SW

SW 10 mph
Precip: 1%

Thu
3:00pm

Mostly Sunny

45°F
Dew Pt 34°F
Wind Chill: 40°F
Wind from SW

SW 10 mph
Precip: 1%

Thu
4:00pm

Partly Sunny

42°F
Dew Pt 30°F
Wind Chill: 36°F
Wind from SW

SW 10 mph
Precip: 0%

Thu
5:00pm

Mostly Sunny

39°F
Dew Pt 27°F
Wind Chill: 32°F
Wind from SW

SW 10 mph
Precip: 0%

Thu
6:00pm

Partly Cloudy

36°F
Dew Pt 25°F
Wind Chill: 29°F
Wind from W

W 9 mph
Precip: 0%

Thu
7:00pm

Partly Cloudy

34°F
Dew Pt 21°F
Wind Chill: 27°F
Wind from W

W 9 mph
Precip: 1%

Thu
8:00pm

Partly Cloudy

33°F
Dew Pt 21°F
Wind Chill: 26°F
Wind from W

W 9 mph
Precip: 3%

Thu
9:00pm

Partly Cloudy

31°F
Dew Pt 19°F
Wind Chill: 23°F
Wind from W

W 9 mph
Precip: 5%

Thu
10:00pm

Partly Cloudy

29°F
Dew Pt 16°F
Wind Chill: 20°F
Wind from W

W 10 mph
Precip: 7%

Thu
11:00pm

Partly Cloudy

27°F
Dew Pt 14°F
Wind Chill: 18°F
Wind from W

W 10 mph
Precip: 7%

Fri
12:00am

Partly Cloudy

26°F
Dew Pt 12°F
Wind Chill: 16°F
Wind from W

W 10 mph
Precip: 7%

Fri
1:00am

Partly Cloudy

24°F
Dew Pt 10°F
Wind Chill: 14°F
Wind from W

W 10 mph
Precip: 7%

Fri
2:00am

Partly Cloudy

22°F
Dew Pt 8°F
Wind Chill: 12°F
Wind from W

W 10 mph
Precip: 8%

Fri
3:00am

Partly Cloudy

21°F
Dew Pt 6°F
Wind Chill: 9°F
Wind from W

W 12 mph
Precip: 8%

Fri
4:00am

Partly Cloudy

20°F
Dew Pt 5°F
Wind Chill: 7°F
Wind from W

W 12 mph
Precip: 8%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 142008
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
308 PM EST Wed Jan 14 2026

.WHAT HAS CHANGED...

A few snow squalls possible Thursday. Gale Watches were converted to 
Gale Warnings for Thursday night into Friday as confidence increases 
in gusty winds impacting the waters late week. Some guidance 
continues to show the possibility for a more impactful storm late 
weekend into Monday. While a high impact storm remains an outlier, 
we continue to monitor this storm that could bring mixed 
precipitation and/or snow. 

&&

.KEY MESSAGES...

- Unseasonably mild tonight with a few rain showers. 

- Much colder and windy starting Thursday with perhaps a few 
rain/snow showers and even a localized snow squall.

-Mostly dry Thursday but a few showers or snow squalls are
 possible. 

- Uncertainty remains whether we will see some mixed precipitation 
  and/or snow this weekend.

- Very cold air/below normal temperatures for the first half of
  the next work week.

&&

.DISCUSSION...

Key Message 1...Unseasonably mild tonight with a few rain showers. 

Continued WAA ahead of a deep mid level trough will mean above 
average temperatures continue into the overnight hours. Thanks to 
the warm SW flow lows should only dip into the upper 30s to even low 
40s in the urban centers. For reference, the average lows for mid 
January are in the low 20s. Under this warm advection pattern we'll 
see the atmosphere saturate over the next several hours as the 
surface low lifts from western NY into northern New England 
overnight. Light rain showers overspread late afternoon into the 
evening, especially over western/central MA and CT with lesser 
coverage further south and east. The bulk of the precip lifts out by 
sunrise Thursday. 

Key Message 2...Much colder air moves into the region Thursday with 
falling temperatures and perhaps a rain/snow shower and even a few 
snow squalls.

Following a sweeping cold front on Thursday temperatures will begin 
to drop steadily leading to an atypical diurnal trend with temps in 
the 30s (high terrain) and mid 40s early in the day, dropping into 
the 20s and low 30s respectively by late afternoon. This, as winds 
really begin to ramp up after noon as cold advection leads to better 
mixing while the pressure gradient increases between the deepening 
low as it exits and an incoming ridge of high pressure. By Thursday 
evening winds will be gusting 25 to 35 mph for most locations and 
this continues overnight through much of Friday. Considering 925mb 
temps drop from +2C Thursday afternoon to -11C Friday morning, we'll 
see a drastic drop in temps accompanying these winds. Lows Friday 
morning will be 15 to 20F colder than the night previous, in the 
teens. However, the bigger story will be the frigid wind chill 
values, in the -5 to +5F range for most locations (as cold as -10F 
in the Berkshires). It will be a brief shot of arctic air, though, 
with a warmer airmass right behind it. 

Key Message 3...Mostly dry Thursday but a few showers or snow 
squalls are possible. 

When it comes to precipitation, the bulk of the region is dry Thu-
Fri. The exception is a chance for some widely scattered snow 
showers or squalls that are possible during the afternoon and 
evening on Thursday. The highest likelihood is for western MA/CT in 
the afternoon, but there is potential that these could spread into 
eastern MA/RI by late evening. Guidance has continued to hint at 
this possibility as the likelihood increases of a confluence of steep 
lapse rates and a strong cold front with lingering low level 
moisture and gusty winds; the amount of moisture available continues 
to be the biggest question. While the NAM is the most bullish, other 
guidance does indicate a quick ramp up of the snow squall parameter 
and even some weak CAPE as that front moves through. The NAM, GFS, 
and Canadian models all show 60-80 J/kg of surface based CAPE. 
accompanying that front. 

KEY MESSAGE 4...Uncertainty remains whether we will see some 
mixed precipitation and/or snow this weekend.

The latest deterministic GFS was along the western edge of the 
solution envelope, with the Canadian on the eastern edge. All told 
this provides an error range of nearly 500 miles just between these 
two sources. The ensembles showed similar uncertainty. Cluster 
analysis showed the most favored solutions is for a storm track near 
to just south of our region. Thus, significant uncertainty in the 
details remains. Kept a mention of the precipitation in the 
forecast for sometime between Saturday into Sunday night, mainly 
towards the southeast coast of New England.

With such large differences in the guidance, focusing on a singular 
deterministic model run is not recommended at this time. We expect 
to have greater clarity in the outcomes for this weekend over the 
next 36-48 hours.

KEY MESSAGE 5...Very cold air/below normal temperatures for the
first half of the next work week.

Above normal Saturday anticipated to trend to near normal values for 
Sunday, followed by below normal temperatures by next Tuesday.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
Forecaster Confidence Levels...

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

18z TAF Update...

This afternoon...High Confidence.

VFR despite mid level cloudiness. S-SW winds 5 to 15 knots.

Tonight...Moderate confidence in timing of IFR conditions.

VFR first half of the evening, then low end MVFR to IFR 
conditions overspread the region from west to east during the 
overnight hours. A few showers tonight. S winds generally 10 
knots or less.

Thursday...High confidence. 

Low end MVFR to IFR conditions Thursday morning becoming VFR 
by the afternoon. Dry on the whole but a few spot rain/snow 
showers are possible, even a localized snow squall across the 
interior. SW winds shifting to the W later in the day with gusts
increasing to between 20 and 30 knots.

Thursday night...Moderate confidence. 

VFR. Gusty W winds continue overnight gusting 20 to 30 kts. A
few quick hitting snow showers may impact terminals in the first
half of the night, but confidence in placement and timing of
these is low. 

KBOS Terminal...High confidence in TAF.

KBDL Terminal...High confidence in TAF.

Outlook /Friday through Monday/...

Friday: VFR. Strong winds with local gusts up to 40 kt. 

Friday Night: VFR. Windy with local gusts up to 30 kt. Slight
chance SN.

Saturday: Mainly VFR, with local MVFR possible. Chance RA,
slight chance SN.

Saturday Night: VFR. Chance RA, slight chance SN.

Sunday: VFR. Breezy. Slight chance SN.

Sunday Night: Mainly VFR, with local MVFR possible. Breezy.
Slight chance SN.

Martin Luther King Jr Day: VFR. Breezy. 

&&

.MARINE...
Forecaster Confidence Levels...

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

This afternoon through Thursday night...High Confidence.

Seas 2-5 feet persist tonight across the southern outer- 
waters. A strong cold front crosses the region early Thu 
allowing for winds to pick back up as the day wears along with 
SW winds shifting more to the W with 25 to 30 knot gust Thu 
afternoon and gusting to 35 kt by Thursday night. Seas also
increase to 6 to 9 feet on the southern waters Thursday into
Thursday night, 4 to 6 feet on the eastern waters. 

Outlook /Friday through Monday/...

Friday: Moderate risk for gale force winds with gusts up to
40 kt. Rough seas up to 11 ft. 

Friday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Areas of rough seas. 

Saturday through Saturday Night: Winds less than 25 kt. Areas
of rough seas. Chance of rain. 

Sunday: Winds less than 25 kt. Local rough seas. Chance of
rain, chance of snow. 

Sunday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Local rough seas. Slight chance of snow. 

Martin Luther King Jr Day: Moderate risk for Small Craft
Advisory winds with local gusts up to 30 kt. Local rough seas. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 1 AM to 7 AM EST Friday for ANZ230-
     236.
     Gale Warning from 7 AM to 4 PM EST Friday for ANZ230-236.
     Small Craft Advisory from 1 PM Thursday to 1 AM EST Friday for 
     ANZ231-251.
     Gale Warning from 1 AM to 4 PM EST Friday for ANZ231-251.
     Small Craft Advisory from 7 AM to 7 PM EST Thursday for 
     ANZ232>235-237.
     Gale Warning from 7 PM Thursday to 4 PM EST Friday for 
     ANZ232>235-237.
     Small Craft Advisory until 7 PM EST Thursday for ANZ250-
     254>256.
     Gale Warning from 7 PM Thursday to 10 PM EST Friday for ANZ250-
     254>256.

&&

$$

DISCUSSION...Belk/BW
AVIATION...Belk/BW
MARINE...Belk/BW

CLOSE