Lexington Weather

Current Conditions [‒] Current Conditions [+]

32.4°F Colder than last hour.

0.2°C

Cold

Clear

This Afternoon: Hi 29 °F

Tonight: Lo 9 °F

Dew Point: 15.3°F Decreased 0.1°F since last hour.

Humidity: 49% Increased 1.0% since last hour.

Air Quality Index: 34

Good

(Course Particles)

Barometer: 29.88 in S

1012 mb

Snow Today: 0.0 in

Snow Wednesday: 0.0 in

February: 0.0 in

Winter: 29.5 in

Depth: 11.0 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

For Lexington, 2" expected.

Forecast [‒] Forecast [+]

Daily Forecast
Hourly Forecast

NWS Weather Forecast -
This Afternoon, Tonight, & Friday through Wednesday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu Feb 5, 2026 3:06pm EST

This Afternoon:

Sunny

Hi 29 °F

Sunny, with a high near 29. Northwest wind around 5 mph.

Tonight:

Mostly Cloudy

Lo 9 °F

Mostly cloudy, with a low around 9. North wind around 5 mph.

Friday:

Mostly Cloudy

Hi 27 °F

Mostly cloudy, with a high near 27. North wind 2 to 6 mph.

Friday Night:

Chance Light Snow

Lo 18 °F

A chance of snow between 11pm and 1am, then snow likely and patchy fog. Cloudy, with a low around 18. North wind around 3 mph. Chance of precipitation is 50%.

Saturday:

Light Snow

Hi 27 °F

Snow and patchy fog. Cloudy, with a high near 27. North wind 3 to 12 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Saturday Night:

Chance Light Snow

Lo 2 °F

A chance of snow before 1am. Mostly cloudy, with a low around 2. Northwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New snow accumulation of less than half an inch possible.

Sunday:

Mostly Sunny

Hi 15 °F

Mostly sunny, with a high near 15. Northwest wind around 13 mph, with gusts as high as 25 mph.

Sunday Night:

Mostly Clear

Lo 0 °F

Mostly clear, with a low around 0. Northwest wind 8 to 12 mph.

Monday:

Sunny

Hi 21 °F

Sunny, with a high near 21. Northwest wind around 10 mph.

Monday Night:

Mostly Clear

Lo 4 °F

Mostly clear, with a low around 4. Northwest wind around 8 mph.

Tuesday:

Mostly Sunny

Hi 30 °F

Mostly sunny, with a high near 30. Northwest wind around 7 mph.

Tuesday Night:

Partly Cloudy

Lo 11 °F

Partly cloudy, with a low around 11. Northwest wind around 5 mph.

Wednesday:

Slight Chance Light Snow

Hi 34 °F

A slight chance of snow. Mostly sunny, with a high near 34. Northwest wind around 6 mph.

Wednesday Night:

Chance Light Snow

Lo 22 °F

A chance of snow. Partly cloudy, with a low around 22. Northwest wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 3pm through Sat 2am

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu Feb 5, 2026 3:06pm EST

3:00pm

Sunny

29°F
Dew Pt 16°F
Wind Chill: 24°F
Wind from NW

NW 5 mph
Precip: 0%

4:00pm

Sunny

29°F
Dew Pt 15°F
Wind Chill: 24°F
Wind from NW

NW 5 mph
Precip: 0%

5:00pm

Sunny

25°F
Dew Pt 13°F
Wind Chill: 21°F
Wind from N

N 3 mph
Precip: 0%

6:00pm

Mostly Clear

23°F
Dew Pt 11°F
Wind from N

N 2 mph
Precip: 0%

7:00pm

Partly Cloudy

20°F
Dew Pt 10°F
Wind from N

N 2 mph
Precip: 0%

8:00pm

Partly Cloudy

16°F
Dew Pt 8°F
Wind from N

N 2 mph
Precip: 0%

9:00pm

Partly Cloudy

15°F
Dew Pt 6°F
Wind from N

N 2 mph
Precip: 0%

10:00pm

Mostly Cloudy

13°F
Dew Pt 6°F
Wind Chill: 7°F
Wind from N

N 3 mph
Precip: 0%

11:00pm

Mostly Cloudy

12°F
Dew Pt 5°F
Wind Chill: 6°F
Wind from N

N 3 mph
Precip: 0%

Fri
12:00am

Partly Cloudy

11°F
Dew Pt 5°F
Wind Chill: 5°F
Wind from NW

NW 3 mph
Precip: 0%

Fri
1:00am

Partly Cloudy

9°F
Dew Pt 4°F
Wind Chill: 2°F
Wind from NW

NW 3 mph
Precip: 0%

Fri
2:00am

Mostly Cloudy

10°F
Dew Pt 4°F
Wind Chill: 4°F
Wind from NW

NW 3 mph
Precip: 0%

Fri
3:00am

Mostly Cloudy

9°F
Dew Pt 4°F
Wind Chill: 1°F
Wind from N

N 5 mph
Precip: 0%

Fri
4:00am

Mostly Cloudy

9°F
Dew Pt 5°F
Wind Chill: 1°F
Wind from N

N 5 mph
Precip: 0%

Fri
5:00am

Mostly Cloudy

10°F
Dew Pt 6°F
Wind Chill: 2°F
Wind from NW

NW 5 mph
Precip: 0%

Fri
6:00am

Mostly Cloudy

10°F
Dew Pt 7°F
Wind Chill: 2°F
Wind from N

N 5 mph
Precip: 0%

Fri
7:00am

Mostly Cloudy

11°F
Dew Pt 7°F
Wind Chill: 2°F
Wind from N

N 6 mph
Precip: 1%

Fri
8:00am

Mostly Cloudy

13°F
Dew Pt 9°F
Wind Chill: 4°F
Wind from N

N 6 mph
Precip: 1%

Fri
9:00am

Mostly Cloudy

16°F
Dew Pt 12°F
Wind Chill: 8°F
Wind from N

N 6 mph
Precip: 1%

Fri
10:00am

Mostly Cloudy

20°F
Dew Pt 15°F
Wind Chill: 13°F
Wind from N

N 6 mph
Precip: 2%

Fri
11:00am

Mostly Cloudy

22°F
Dew Pt 16°F
Wind Chill: 15°F
Wind from N

N 6 mph
Precip: 3%

Fri
12:00pm

Mostly Cloudy

25°F
Dew Pt 18°F
Wind Chill: 18°F
Wind from N

N 6 mph
Precip: 4%

Fri
1:00pm

Mostly Cloudy

25°F
Dew Pt 18°F
Wind Chill: 19°F
Wind from N

N 6 mph
Precip: 5%

Fri
2:00pm

Mostly Cloudy

26°F
Dew Pt 19°F
Wind Chill: 20°F
Wind from N

N 6 mph
Precip: 5%

Fri
3:00pm

Cloudy

27°F
Dew Pt 19°F
Wind Chill: 21°F
Wind from N

N 5 mph
Precip: 7%

Fri
4:00pm

Mostly Cloudy

26°F
Dew Pt 18°F
Wind Chill: 22°F
Wind from N

N 3 mph
Precip: 7%

Fri
5:00pm

Mostly Cloudy

25°F
Dew Pt 18°F
Wind from NE

NE 2 mph
Precip: 7%

Fri
6:00pm

Mostly Cloudy

24°F
Dew Pt 17°F
Wind from NE

NE 2 mph
Precip: 8%

Fri
7:00pm

Mostly Cloudy

22°F
Dew Pt 17°F
Wind from NE

NE 2 mph
Precip: 11%

Fri
8:00pm

Cloudy

22°F
Dew Pt 18°F
Wind from NE

NE 2 mph
Precip: 11%

Fri
9:00pm

Cloudy

22°F
Dew Pt 18°F
Wind from N

N 2 mph
Precip: 11%

Fri
10:00pm

Cloudy

22°F
Dew Pt 17°F
Wind Chill: 21°F
Wind from N

N 2 mph
Precip: 11%

Fri
11:00pm

Slight Chance Light Snow

21°F
Dew Pt 17°F
Wind from NW

NW 2 mph
Precip: 17%

Sat
12:00am

Chance Light Snow

21°F
Dew Pt 17°F
Wind from NW

NW 1 mph
Precip: 23%

Sat
1:00am

Chance Light Snow

21°F
Dew Pt 17°F
Wind from NW

NW 2 mph
Precip: 30%

Sat
2:00am

Chance Light Snow

20°F
Dew Pt 17°F
Wind from NW

NW 2 mph
Precip: 37%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 052013
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
313 PM EST Thu Feb 5 2026

.WHAT HAS CHANGED...
Extreme Cold Watch has been expanded to all of northern Connecticut 
and for western and central Massachusetts. 

&&

.KEY MESSAGES...


- Dry weather through Friday. Snow showers late Friday night,
  lingering through Saturday evening. 

- Dangerous cold Saturday night into Sunday, along with
  hazardous marine candidness. 

&&

.DISCUSSION...

KEY MESSAGE 1...Dry weather through Friday. Snow showers late 
Friday night, lingering through Saturday evening. 

High pressure remains in place through Friday bringing dry 
conditions. Low temperatures overnight will depend on how 
quickly the moisture/clouds move in overnight. Should be clear 
to start the night, allowing efficient radiational cooling. As 
long as clouds to arrive too early, lows should drop into the 
single digits and teens perhaps a few below zero readings in the
higher elevations of the interior. For Friday, temperatures 
range in the mid to upper 20s in most areas, a little below 
normal for this time of year.

An arctic front is expected to sweep across the region Sat morning 
and afternoon. During this time, a low pressure system tracks 
offshore with an accompanying inverted trough shifting across 
portions of the region. The main result of this set-up will be light 
showers developing early Saturday morning, continuing through the 
day Saturday with showers lingering across the east coast/Cape 
& Islands through Saturday evening. Overall this event is 
looking to be minor impact with light accumulations of fluffy 
snow. Ensembles and the NBM show high probabilities 1-3" inches 
of snow for most of southern New England by Saturday night. 

Where it gets a little more detailed and lower confidence will be 
with the positioning of the inverted trough and the ocean-
effect/enhancement. These will be important details when it comes to 
assessing the potential for locally higher snow amounts. Ocean-
effect and enhancement is likely with surface winds shifting NE to N 
Saturday ahead of an approaching arctic front with NW winds in its 
wake. The convergence alone may act as an enhancer for snowfall. 
This will favor the coastal areas that are typically impacted by 
ocean-effect (east coast/Cape & Islands). There is still uncertainty 
where exactly the bands/enhancement will set up, especially with 
respect to the east coast (e.g. Boston Logan Airport, Plymouth). 
Models continue to indicate an inverted trough accompanying the 
offshore surface low extending through southern New England. This 
could be another forcer for snowfall enhancement; however, the 
positioning and strength of the inverted trough less certain which 
will influence the amounts and where those more enhanced amounts 
could end up. Model soundings show a favorable environment overall 
with a period of decent lift in the snow growth region and marginal 
instability, more so further east. Ensembles highlight 
probabilities for 3"+ across central southern New England and 
the east coast/Cape & Islands with overall more consistency with
probabilities over the east coast/Cape. This aligns with where 
we are seeing potential positioning for mesoscale features, so 
the localized higher amounts will depend on where these set up. 
So bottom line, 1-3" is looking most likely with potential for 
localized 3"+ for areas. Held off on advisories for now given
the uncertainty in where these localized mesoscale enhancements
will set up.

Quickly falling temperatures behind the arctic front, marginal 
instability, and onset of gusty winds raises concern for a few 
snow squalls as the front moves through Saturday. Higher risk 
looks to be western southern New England into central portions 
as well. 


KEY MESSAGE 2...Dangerous cold Saturday night into Sunday, 
along with hazardous marine candidness. 

Dangerous cold expected Saturday evening through Sunday as an Arctic 
front pushes through. 925mb temperatures lowering to -20C across the 
Berkshires and elsewhere are between 10-15C below zero. Majority of 
the region experiences minimum temperatures -5F to +5F, while at the 
coast, those temperatures are 5F-15F. Overnight, pressure gradient 
increases due to high pressure the north and a deepening area of low 
pressure to the southeast. Factoring the cold temperatures with a 
northwest gusts between 30-40 mph, wind chill values are as low as 
25 to 30 below zero across western and central Massachusetts. Major 
urban centers like Boston, Providence, Hartford, and Worcester are 
"less" cold, but still dangerous, wind chill values are 10-20 
degrees below zero. There is little improvement during Sunday, with 
daytime temperatures reaching the teens and sub-zero wind chills. 

Have expanded the Extreme Cold Watch to include all of western and 
central Massachusetts, additionally, all of northern Connecticut. 
Areas currently not under a watch, will likely have Cold Weather 
Advisories issued in the next 24-36 hours. Either way you look at 
it, spending any duration outdoors Saturday evening through Sunday 
morning should be considered dangerous, wear multiple layers, and 
don't leave any bare skin exposed. 

During this time, it's worth reminding boater there is potential for 
heavy freezing spray across all the waters as icing rates could 
reach 0.5-1.0 inch per hour. This has prompted a Heavy Freezing 
Spray Watch for all waters with exception of Boston Harbor.  

Below normal temperatures continue into early next week, daytime 
highs are in the teens and 20s on Monday, near 30 on Tuesday, and 
trending towards the middle 30s for Wednesday and Thursday. Outside 
of a weak clipper system on Monday night there is fairly quiet 
conditions early next week. Will need to monitor a mid to late week 
system, though there is low confidence in this part of the forecast 
due model disagreement on placement and timing. Stay tuned. 


&&

.AVIATION /20Z THURSDAY THROUGH TUESDAY/...
Forecaster Confidence Levels...

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

18z TAF Update... 

Through Friday...High confidence.

Mainly VFR through the period. Cigs around 3-5k ft develop from
E to W late tonight into Friday with some localized MVFR
possible. NW winds 10-15 kt today, becoming light NNW/N tonight.
NNE winds Friday 5-10 kts.

Outlook /Friday Night through Tuesday/...

Saturday: MVFR/IFR conditions possible. Windy with gusts up to
30 kt. SN.

Saturday Night: VFR. Windy with gusts up to 35 kt. Chance SN.

Sunday: VFR. Windy with areas of gusts up to 30 kt. 

Sunday Night through Monday Night: VFR. Breezy. 

Tuesday: VFR. 

&&

.MARINE...
Forecaster Confidence Levels...

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

Headlines: 

* Gale Watch remains in effect 1 PM Saturday to 1 PM Sunday.

* Heavy Freezing Spray Watch in effect 4 PM Saturday to 7 AM Monday. 

Tonight through Friday Night... High Confidence. 

No significant weather impacts are expected tonight and Friday as an 
area of high pressure remains in control. A clipper system late 
Friday night will bring snow showers. During this time, seas are 
less than 3 feet, with gusts below advisory criteria, not 
anticipating any freezing spray for the rest of Thursday through 
Friday night. The threat for freezing spray returns on Saturday. 


Outlook /Friday Night through Tuesday/...

Saturday: Low risk for Small Craft Advisory winds with gusts up
to 30 kt. Local rough seas. Snow likely. Visibility 1 to 3 nm.

Saturday Night: Moderate risk for gale force winds with gusts
up to 40 kt. Rough seas up to 13 ft. Freezing spray, chance of
snow. Local visibility 1 nm or less.

Sunday: Strong winds with gusts up to 35 kt. Rough seas up to
12 ft. Freezing spray, slight chance of snow. 

Sunday Night: Strong winds with areas of gusts up to 30 kt.
Areas of rough seas. Freezing spray. 

Monday through Monday Night: Winds less than 25 kt. Seas up to
5 ft. Freezing spray. 

Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Extreme Cold Watch from Saturday evening through Sunday 
     afternoon for CTZ002>004.
MA...Extreme Cold Watch from Saturday evening through Sunday 
     afternoon for MAZ002>004-008>012.
RI...None.
MARINE...Gale Watch from Saturday afternoon through Sunday afternoon 
     for ANZ231>235-237-250-251-254>256.
     Heavy Freezing Spray Watch from Saturday afternoon through 
     Monday morning for ANZ231>237-250-251-254>256.

&&

$$

DISCUSSION...Dooley/Mensch
AVIATION...Dooley/Mensch
MARINE...Dooley

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