Lexington Weather

Current Conditions [‒] Current Conditions [+]

51.1°F

10.6°C

Cool

Clear

This Afternoon: Hi 47 °F

Tonight: Lo 27 °F

Dew Point: 25.0°F

Humidity: 36%

Air Quality Index: 42

Good

(Ozone)

Barometer: 29.96 in S

1015 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

Expected Snow [‒] Expected Snow [+]

Tap Click image to go to NWS winter weather page

For Lexington, 1" expected.

Forecast [‒] Forecast [+]

Daily Forecast
Hourly Forecast

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Feb 28, 2026 1:24pm EST

This Afternoon:

Mostly Sunny

Hi 47 °F

Mostly sunny, with a high near 47. South wind around 7 mph.

Tonight:

Partly Cloudy

Lo 27 °F

Partly cloudy, with a low around 27. West wind around 6 mph.

Sunday:

Light Snow Likely

Hi 34 °F

Snow likely after 7am. Mostly cloudy, with a high near 34. North wind around 8 mph. Chance of precipitation is 70%. New snow accumulation of around one inch possible.

Sunday Night:

Slight Chance Light Snow then Mostly Clear

Lo 9 °F

A slight chance of snow before 7pm. Mostly clear, with a low around 9. Wind chill values as low as -2. Northwest wind around 8 mph. Chance of precipitation is 20%. New snow accumulation of less than half an inch possible.

Monday:

Sunny

Hi 26 °F

Sunny, with a high near 26. Northwest wind 3 to 7 mph.

Monday Night:

Mostly Clear

Lo 13 °F

Mostly clear, with a low around 13. Southwest wind around 5 mph.

Tuesday:

Chance Light Snow

Hi 39 °F

A chance of snow between 11am and 1pm, then rain likely. Partly sunny, with a high near 39. South wind 5 to 10 mph. Chance of precipitation is 60%.

Tuesday Night:

Light Rain

Lo 34 °F

Rain. Cloudy, with a low around 34. Southwest wind around 8 mph. Chance of precipitation is 90%.

Wednesday:

Chance Light Rain then Mostly Sunny

Hi 47 °F

A chance of rain before noon. Mostly sunny, with a high near 47. North wind around 7 mph. Chance of precipitation is 40%.

Wednesday Night:

Chance Light Rain

Lo 33 °F

A chance of rain after 7pm. Mostly cloudy, with a low around 33. South wind around 5 mph. Chance of precipitation is 30%.

Thursday:

Chance Light Rain

Hi 49 °F

A chance of rain. Cloudy, with a high near 49. Southwest wind 5 to 8 mph. Chance of precipitation is 40%.

Thursday Night:

Light Rain Likely

Lo 37 °F

Rain likely. Cloudy, with a low around 37. Northeast wind around 7 mph. Chance of precipitation is 60%.

Friday:

Light Rain Likely

Hi 46 °F

Rain likely. Cloudy, with a high near 46. Northeast wind around 8 mph. Chance of precipitation is 60%.

Friday Night:

Chance Light Rain

Lo 37 °F

A chance of rain. Mostly cloudy, with a low around 37. Northwest wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 3pm through Mon 2am

Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Feb 28, 2026 1:24pm EST

3:00pm

Mostly Sunny

44°F
Dew Pt 34°F
Wind Chill: 40°F
Wind from S

S 7 mph
Precip: 2%

4:00pm

Mostly Sunny

45°F
Dew Pt 35°F
Wind Chill: 41°F
Wind from S

S 6 mph
Precip: 2%

5:00pm

Mostly Sunny

43°F
Dew Pt 35°F
Wind Chill: 39°F
Wind from S

S 6 mph
Precip: 2%

6:00pm

Partly Cloudy

42°F
Dew Pt 34°F
Wind Chill: 39°F
Wind from S

S 5 mph
Precip: 2%

7:00pm

Partly Cloudy

40°F
Dew Pt 34°F
Wind Chill: 37°F
Wind from SW

SW 5 mph
Precip: 1%

8:00pm

Partly Cloudy

38°F
Dew Pt 34°F
Wind Chill: 35°F
Wind from SW

SW 5 mph
Precip: 1%

9:00pm

Partly Cloudy

37°F
Dew Pt 34°F
Wind Chill: 33°F
Wind from SW

SW 5 mph
Precip: 1%

10:00pm

Partly Cloudy

36°F
Dew Pt 33°F
Wind Chill: 32°F
Wind from W

W 5 mph
Precip: 1%

11:00pm

Partly Cloudy

35°F
Dew Pt 31°F
Wind Chill: 31°F
Wind from W

W 5 mph
Precip: 1%

Sun
12:00am

Mostly Clear

35°F
Dew Pt 30°F
Wind Chill: 31°F
Wind from NW

NW 5 mph
Precip: 3%

Sun
1:00am

Mostly Clear

34°F
Dew Pt 29°F
Wind Chill: 30°F
Wind from NW

NW 5 mph
Precip: 5%

Sun
2:00am

Mostly Clear

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

NW 5 mph
Precip: 2%

Sun
3:00am

Partly Cloudy

31°F
Dew Pt 27°F
Wind Chill: 26°F
Wind from NW

NW 5 mph
Precip: 3%

Sun
4:00am

Partly Cloudy

31°F
Dew Pt 25°F
Wind Chill: 26°F
Wind from N

N 6 mph
Precip: 2%

Sun
5:00am

Mostly Cloudy

29°F
Dew Pt 25°F
Wind Chill: 24°F
Wind from N

N 6 mph
Precip: 8%

Sun
6:00am

Mostly Cloudy

29°F
Dew Pt 24°F
Wind Chill: 24°F
Wind from N

N 6 mph
Precip: 7%

Sun
7:00am

Slight Chance Light Snow

29°F
Dew Pt 24°F
Wind Chill: 23°F
Wind from N

N 6 mph
Precip: 17%

Sun
8:00am

Chance Light Snow

28°F
Dew Pt 24°F
Wind Chill: 22°F
Wind from N

N 6 mph
Precip: 25%

Sun
9:00am

Slight Chance Light Snow

30°F
Dew Pt 24°F
Wind Chill: 24°F
Wind from N

N 6 mph
Precip: 16%

Sun
10:00am

Chance Light Snow

31°F
Dew Pt 24°F
Wind Chill: 25°F
Wind from N

N 7 mph
Precip: 25%

Sun
11:00am

Chance Light Snow

32°F
Dew Pt 24°F
Wind Chill: 26°F
Wind from N

N 7 mph
Precip: 43%
Snowfall: 0.1 in

Sun
12:00pm

Light Snow Likely

33°F
Dew Pt 24°F
Wind Chill: 26°F
Wind from N

N 7 mph
Precip: 69%
Snowfall: 0.1 in

Sun
1:00pm

Light Snow Likely

32°F
Dew Pt 23°F
Wind Chill: 25°F
Wind from N

N 7 mph
Precip: 55%
Snowfall: 0.2 in

Sun
2:00pm

Light Snow Likely

32°F
Dew Pt 22°F
Wind Chill: 25°F
Wind from N

N 8 mph
Precip: 59%
Snowfall: 0.2 in

Sun
3:00pm

Light Snow Likely

32°F
Dew Pt 21°F
Wind Chill: 25°F
Wind from N

N 8 mph
Precip: 58%
Snowfall: 0.1 in

Sun
4:00pm

Chance Light Snow

31°F
Dew Pt 19°F
Wind Chill: 24°F
Wind from N

N 8 mph
Precip: 32%
Snowfall: 0.1 in

Sun
5:00pm

Chance Light Snow

29°F
Dew Pt 18°F
Wind Chill: 21°F
Wind from N

N 8 mph
Precip: 26%
Snowfall: 0.1 in

Sun
6:00pm

Slight Chance Light Snow

27°F
Dew Pt 16°F
Wind Chill: 19°F
Wind from NW

NW 7 mph
Precip: 20%
Snowfall: 0.1 in

Sun
7:00pm

Partly Cloudy

25°F
Dew Pt 14°F
Wind Chill: 16°F
Wind from NW

NW 8 mph
Precip: 3%

Sun
8:00pm

Mostly Clear

23°F
Dew Pt 13°F
Wind Chill: 14°F
Wind from NW

NW 8 mph
Precip: 4%

Sun
9:00pm

Mostly Clear

21°F
Dew Pt 10°F
Wind Chill: 11°F
Wind from NW

NW 8 mph
Precip: 5%

Sun
10:00pm

Mostly Clear

19°F
Dew Pt 7°F
Wind Chill: 9°F
Wind from NW

NW 8 mph
Precip: 6%

Sun
11:00pm

Mostly Clear

17°F
Dew Pt 5°F
Wind Chill: 7°F
Wind from NW

NW 8 mph
Precip: 5%

Mon
12:00am

Mostly Clear

16°F
Dew Pt 3°F
Wind Chill: 6°F
Wind from NW

NW 8 mph
Precip: 4%

Mon
1:00am

Mostly Clear

15°F
Dew Pt 2°F
Wind Chill: 4°F
Wind from NW

NW 8 mph
Precip: 3%

Mon
2:00am

Mostly Clear

13°F
Dew Pt 1°F
Wind Chill: 2°F
Wind from NW

NW 8 mph
Precip: 2%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 281829
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
129 PM EST Sat Feb 28 2026

.WHAT HAS CHANGED...
Looking slightly drier on Sunday with lesser snowfall totals expected.
Confidence is increasing that snow will change to a wintry mix 
and rain late Tuesday.

&&

.KEY MESSAGES...


- Turning very cold behind the Arctic front Sunday night into Monday 

- Areas of light snow and snow showers likely on Sunday with dry air 
preventing significant accumulations

- Trending above normal temperatures Wednesday through Saturday. 
Becoming unsettled with a prolonged risk for periodic precipitation.


&&

.DISCUSSION...
Key Message 1...Turning very cold behind the Arctic front Sunday 
night into Monday 

Quick bout of mild weather this afternoon and evening comes to an 
end as a weak front moves through overnight. A stronger arctic front 
moves through Sunday, knocking highs back into the 30s. Coldest 
temps occur overnight Sunday as the core of the cold moves overhead. 
Winds will decrease Sunday night with the center of arctic high 
pressure moving in; however, the wind chill index will likely be 
below zero across interior Southern New England. High temperatures 
on Monday will be quite cold for March standards, only topping out 
in the low to mid-20s. Arctic air remains in place Monday night with 
low temperatures once again bottoming out in the single digits. 
Little to no wind is expected Monday night, limiting the wind chill 
factor. 


Key Message 2...Areas of light snow and snow showers likely on 
Sunday with dry air preventing significant accumulations

Earlier model uncertainty and spread has narrowed somewhat with 
regards to Sunday's snowfall forecast. Ensemble QPF totals for the 
12 and 18z model cycles have fallen significantly and now range from 
0.10-0.20 at the 25th and 75th percentiles respectively. These 
changes have been largely the result of individual deterministic 
models resolving a drier air aloft ahead of a strong area of high 
pressure approaching from the W later Sunday. Upper level forcing 
also seems to be limited to the cold front itself, with the parent 
shortwave staying in northern New England. However, 850 mb FGEN will 
be quite strong given the intense temperature gradient. Given these 
changes, the snowfall forecast remains nearly unchanged, with a 
widespread trace to 1 inch expected across much of Southern New 
England, with some spots seeing perhaps 2-3 inches at the worst. The 
most likely spots to see the higher totals will be the high terrain 
across the northern Berkshires and Worcester hills. Snow will move 
from west to east on Sunday, starting in the mid to late morning and 
moving offshore around sunset.  Given the lack of stronger forcing, 
hourly snow rates will be light, under a half inch per hour.  


Key Message 3...Trending above normal temperatures Wednesday 
through Saturday. Becoming unsettled with a prolonged risk for 
periodic precipitation. 

Below normal temperatures expected Monday as the core of an arctic 
airmass lingers over our region. After then, temperatures should be 
near normal for Tuesday, before trending above normal for Wednesday 
into Saturday. By late next week, most of southern New England could 
actually remain above freezing all day and night. This will have 
implications for precipitation type.

It appears that our region will be in the vicinity of some frontal 
boundaries that shift back and forth across our region. This will 
lead to a prolonged period for precipitation chances, but it will 
not be actually precipitating this entire time. Within this larger 
period, we're more focused on two smaller periods with a greater 
risk.

The first of these looks to be sometime Tuesday into Wednesday, 
which is when a weak low pressure should move past our region. The 
timing is not as certain with a high pressure expected over the 
North Atlantic. This pattern tends to slow the arrival of 
precipitation, or could even shift the focus over northern New 
England instead. At present, this looks like a light-snow-to-rain 
scenario given the recent arctic air. The later the precipitation 
holds off, the more likely rain would be the primary type. Snow 
would be most likely to linger across the higher terrain of the 
Berkshires and the northern Worcester Hills.

The second period we're more focused on looks to be sometime 
Thursday into Friday. Our region gets caught between a pair of 
fronts. By that time though, it currently appears that we would 
remain warm enough for a light rainfall across southern New England.

&&

.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...

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

Rest of Today...High Confidence.

VFR. Light SW-ly winds 5-10 knots. Increasing mid-level 
cloudiness this evening.

Tonight...Moderate Confidence.

VFR with areas of MVFR and some IFR possible across S RI and SE
MA with fog development. Light winds shift more NW-ly.

Sunday...Moderate Confidence.

Generally MVFR cigs as the chance for some light snow showers 
increases late Sunday morning into the early afternoon. Light
snow moves from W to E between 15 and 18z then gradually comes
to an end between 19 23z from W-E. Not expecting much 
accumulation with this system. Possibly up to 1-1.5 inches, but 
confidence is low given the wide spread in model guidance at 
this time. Northerly winds at 10-15 knots.

KBOS Terminal...High confidence in TAF.

VFR. SW-ly winds 5-10 knots today veer NW-ly late tonight. 

KBDL Terminal...Moderate confidence in TAF.

MVFR cloud deck slowly expanding across western CT should 
gradually lift through the morning. Otherwise VFR with light 
southerly winds today.

Outlook /Sunday Night through Thursday/...

Sunday Night: VFR. Breezy. Slight chance SN.

Monday: VFR. Breezy. 

Monday Night: VFR. 

Tuesday: Mainly VFR, with local MVFR possible. Breezy. Chance
RA, chance SN.

Tuesday Night: Mainly IFR, with areas MVFR possible. Windy with
local gusts up to 30 kt. RA.

Wednesday: Mainly VFR, with local MVFR possible. Breezy. Chance
RA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Sunday Night...High confidence.

S to SE winds shift more N tonight into Sunday morning. Winds begin 
to increase to near 25 knots Sunday night into Monday morning, with 
seas building to 5 feet across the outer waters. Chance of light to 
moderate freezing spray across the inner waters Monday night into 
late Monday afternoon. 

Outlook /Sunday Night through Thursday/...

Sunday Night: Small Craft Advisory winds with gusts up to 25 
kt. Areas of seas approaching 5 ft. Slight chance of snow.

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

Monday Night: Winds less than 25 kt. 

Tuesday: Low risk for Small Craft Advisory winds with gusts up
to 30 kt. Chance of rain. 

Tuesday Night: Strong winds with gusts up to 30 kt. Seas
locally approaching 5 ft. Rain. 

Wednesday: Winds less than 25 kt. Areas of seas approaching
5 ft. Rain likely.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Freezing Spray Advisory from 1 AM to 10 AM EST Monday for 
     ANZ231>235-237-251.
     Small Craft Advisory from 9 PM Sunday to 1 PM EST Monday for 
     ANZ250-254>256.

&&

$$

DISCUSSION... Belk/FT
AVIATION...FT 
MARINE...FT

CLOSE