Lexington Weather

Current Conditions [‒] Current Conditions [+]

44.4°F Colder than last hour.

6.9°C

Chilly

Partly cloudy

Today: Hi 46 °F

Tonight: Lo 32 °F

Dew Point: 25.5°F Decreased 3.4°F since last hour.

Humidity: 47% Decreased 7.0% since last hour.

Air Quality Index: 26

Good

(Fine Particles)

Barometer: 30.25 in Falling 0.02 inHg/hr

1024 mb

Snow Today: 0.1 in

Snow Monday: Trace

March: 2.5 in

Winter: 51.0 in

Depth: 0.0 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 3 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 -
Today, Tonight, & Wednesday through Monday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Tue Mar 24, 2026 3:11am EDT

Today:

Mostly Sunny

Hi 46 °F

Mostly sunny, with a high near 46. West wind around 6 mph. New snow accumulation of less than half an inch possible.

Tonight:

Partly Cloudy

Lo 32 °F

Partly cloudy, with a low around 32. Southwest wind around 7 mph.

Wednesday:

Mostly Sunny

Hi 52 °F

Mostly sunny, with a high near 52. Southwest wind 5 to 8 mph.

Wednesday Night:

Mostly Cloudy then Slight Chance Light Rain

Lo 39 °F

A slight chance of rain after 2am. Mostly cloudy, with a low around 39. Southwest wind around 8 mph. Chance of precipitation is 20%.

Thursday:

Slight Chance Light Rain

Hi 61 °F

A slight chance of rain before 2pm. Mostly cloudy, with a high near 61. Southwest wind 7 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

Thursday Night:

Light Rain Likely

Lo 46 °F

Rain likely after 7pm. Mostly cloudy, with a low around 46. Southwest wind around 12 mph. Chance of precipitation is 70%.

Friday:

Light Rain Likely then Partly Sunny

Hi 49 °F

Rain likely before 10am. Partly sunny, with a high near 49. Northwest wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

Friday Night:

Mostly Clear

Lo 22 °F

Mostly clear, with a low around 22. Northwest wind 6 to 10 mph.

Saturday:

Mostly Sunny

Hi 39 °F

Mostly sunny, with a high near 39. Northwest wind around 7 mph.

Saturday Night:

Mostly Clear

Lo 26 °F

Mostly clear, with a low around 26. West wind around 7 mph.

Sunday:

Mostly Sunny

Hi 47 °F

Mostly sunny, with a high near 47. West wind 6 to 10 mph.

Sunday Night:

Partly Cloudy

Lo 32 °F

Partly cloudy, with a low around 32. Southwest wind around 8 mph.

Monday:

Mostly Sunny

Hi 54 °F

Mostly sunny, with a high near 54. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.

Monday Night:

Slight Chance Light Rain

Lo 35 °F

A slight chance of rain between 10pm and 2am. Partly cloudy, with a low around 35. West wind around 9 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Thu 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Tue Mar 24, 2026 3:11am EDT

2:00pm

Mostly Sunny

44°F
Dew Pt 22°F
Wind Chill: 41°F
Wind from W

W 5 mph
Precip: 0%

3:00pm

Mostly Sunny

45°F
Dew Pt 22°F
Wind Chill: 43°F
Wind from W

W 5 mph
Precip: 0%

4:00pm

Mostly Sunny

45°F
Dew Pt 21°F
Wind Chill: 42°F
Wind from SW

SW 6 mph
Precip: 0%

5:00pm

Sunny

45°F
Dew Pt 22°F
Wind Chill: 42°F
Wind from SW

SW 6 mph
Precip: 0%

6:00pm

Partly Cloudy

44°F
Dew Pt 23°F
Wind Chill: 41°F
Wind from SW

SW 6 mph
Precip: 0%

7:00pm

Mostly Cloudy

42°F
Dew Pt 23°F
Wind Chill: 38°F
Wind from SW

SW 6 mph
Precip: 0%

8:00pm

Mostly Cloudy

40°F
Dew Pt 25°F
Wind Chill: 36°F
Wind from SW

SW 6 mph
Precip: 0%

9:00pm

Partly Cloudy

38°F
Dew Pt 26°F
Wind Chill: 33°F
Wind from SW

SW 7 mph
Precip: 1%

10:00pm

Partly Cloudy

37°F
Dew Pt 26°F
Wind Chill: 32°F
Wind from SW

SW 7 mph
Precip: 1%

11:00pm

Partly Cloudy

35°F
Dew Pt 26°F
Wind Chill: 29°F
Wind from SW

SW 7 mph
Precip: 1%

Wed
12:00am

Mostly Cloudy

35°F
Dew Pt 25°F
Wind Chill: 29°F
Wind from SW

SW 7 mph
Precip: 0%

Wed
1:00am

Partly Cloudy

35°F
Dew Pt 24°F
Wind Chill: 29°F
Wind from SW

SW 7 mph
Precip: 0%

Wed
2:00am

Partly Cloudy

33°F
Dew Pt 25°F
Wind Chill: 27°F
Wind from SW

SW 7 mph
Precip: 0%

Wed
3:00am

Partly Cloudy

34°F
Dew Pt 25°F
Wind Chill: 29°F
Wind from SW

SW 6 mph
Precip: 0%

Wed
4:00am

Partly Cloudy

34°F
Dew Pt 25°F
Wind Chill: 29°F
Wind from W

W 6 mph
Precip: 0%

Wed
5:00am

Mostly Clear

34°F
Dew Pt 25°F
Wind Chill: 29°F
Wind from W

W 6 mph
Precip: 0%

Wed
6:00am

Sunny

33°F
Dew Pt 24°F
Wind Chill: 28°F
Wind from W

W 6 mph
Precip: 0%

Wed
7:00am

Sunny

33°F
Dew Pt 24°F
Wind Chill: 29°F
Wind from W

W 5 mph
Precip: 0%

Wed
8:00am

Mostly Sunny

34°F
Dew Pt 25°F
Wind Chill: 30°F
Wind from W

W 5 mph
Precip: 0%

Wed
9:00am

Sunny

38°F
Dew Pt 25°F
Wind Chill: 34°F
Wind from W

W 5 mph
Precip: 0%

Wed
10:00am

Mostly Sunny

41°F
Dew Pt 25°F
Wind Chill: 38°F
Wind from W

W 5 mph
Precip: 0%

Wed
11:00am

Mostly Sunny

44°F
Dew Pt 26°F
Wind Chill: 41°F
Wind from SW

SW 6 mph
Precip: 0%

Wed
12:00pm

Mostly Sunny

47°F
Dew Pt 26°F
Wind Chill: 44°F
Wind from SW

SW 6 mph
Precip: 0%

Wed
1:00pm

Partly Sunny

49°F
Dew Pt 26°F
Wind Chill: 46°F
Wind from SW

SW 7 mph
Precip: 0%

Wed
2:00pm

Partly Sunny

50°F
Dew Pt 26°F
Wind Chill: 47°F
Wind from SW

SW 8 mph
Precip: 0%

Wed
3:00pm

Partly Sunny

51°F
Dew Pt 26°F
Wind from SW

SW 8 mph
Precip: 0%

Wed
4:00pm

Partly Sunny

52°F
Dew Pt 27°F
Wind from SW

SW 8 mph
Precip: 0%

Wed
5:00pm

Partly Sunny

51°F
Dew Pt 27°F
Wind from SW

SW 8 mph
Precip: 0%

Wed
6:00pm

Mostly Cloudy

49°F
Dew Pt 28°F
Wind Chill: 46°F
Wind from SW

SW 8 mph
Precip: 1%

Wed
7:00pm

Mostly Cloudy

47°F
Dew Pt 28°F
Wind Chill: 43°F
Wind from S

S 8 mph
Precip: 2%

Wed
8:00pm

Mostly Cloudy

45°F
Dew Pt 29°F
Wind Chill: 41°F
Wind from S

S 7 mph
Precip: 2%

Wed
9:00pm

Mostly Cloudy

44°F
Dew Pt 29°F
Wind Chill: 40°F
Wind from S

S 7 mph
Precip: 3%

Wed
10:00pm

Mostly Cloudy

43°F
Dew Pt 29°F
Wind Chill: 39°F
Wind from S

S 7 mph
Precip: 4%

Wed
11:00pm

Mostly Cloudy

42°F
Dew Pt 29°F
Wind Chill: 38°F
Wind from S

S 7 mph
Precip: 5%

Thu
12:00am

Mostly Cloudy

42°F
Dew Pt 30°F
Wind Chill: 38°F
Wind from S

S 7 mph
Precip: 7%

Thu
1:00am

Cloudy

41°F
Dew Pt 31°F
Wind Chill: 36°F
Wind from S

S 7 mph
Precip: 9%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 241710
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
110 PM EDT Tue Mar 24 2026

.WHAT HAS CHANGED...
No significant changes to prior forecasts through Friday.

&&

.KEY MESSAGES...

- Drier weather today and Wednesday. Warming trend continues
  into Wednesday.

- Mild day on Thursday before a strong cold front brings much
  cooler conditions Friday into this weekend.

&&

.DISCUSSION...
KEY MESSAGE 1...Drier weather today and Wednesday. Warming trend 
continues into Wednesday.

Last of the lingering snow and sleet showers moves offshore early 
this morning. Not looking at much accumulation this morning, and 
mainly on the grassy surfaces at that. Untreated roadways may have 
some icy spots heading into the morning commute as temperatures fall 
below freezing early this morning.

Expecting lots of sunshine today, enough anyway to boost 
temperatures closer to normal today. Some higher clouds pass by this 
evening and overnight, but mainly across northern MA as the main 
feature traverses northern New England. Our region just winds up 
with a moisture-starved trough, with not much more impact than a 
period of some clouds.

Increasing southwest winds for Wednesday leads to above normal 
temperatures. Increasing clouds as well during the afternoon, 
but dry weather should still continue.

KEY MESSAGE 2...Mild day on Thursday before a strong cold front
brings much cooler conditions Friday into this weekend.

Spring-like warmth arrives Thursday as 850s soar into the mid
teens Celsius ahead of the next shortwave. The NBM has high
probabilites (60-80%) of high temperatures warming above 55
degrees. Slightly lower probs of greater than 60 degree temps
compared to previous runs with thickening mid and high level
cloud cover. Highest probs of these temperatures will be in the 
Connecticut and Merrimack river valleys with localized
downsloping. Increasing PoPs Thursday night and Friday morning
as a shortwave approaches the region. PWATs increase to 1-1.2 
inches Thursday night which is a good signal for widespread rain 
and showers during the timeframe. 

The shortwave will be accompanied by a robust low level SW jet.
But given the timing, a nocturnal inversion will preclude these 
stronger winds aloft from mixing to the surface. The better
chance for gusty wind arrives Friday as lapse rates steepen
during the afternoon. 

A front works its way through the region early Friday morning. 
Much drier air behind it brings a quick end to any lingering 
rain showers by the mid morning. It will be a fairly blustery 
day with a well-mixed boundary layer developing by the 
afternoon. Only limiting factor for higher gusts will be the 
timing of the low level jet which looks to weaken as mixing 
increases. Bigger story will be 850 mb temperatures falling from
+3C Friday afternoon to -13C Saturday. High temps likely occur 
early Friday morning before falling throughout the day with 
strong cold air advection. Highs struggle into the upper 30s to 
lower 40s on Saturday.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...

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

18z TAF update...

Through Wednesday...High confidence.

VFR. SW-W wind 5-15 kt tonight, then W-SW 10-15 kt Wed. 

Wednesday night...Moderate confidence. 

Cigs lowering to MVFR after midnight with a few showers possible. SW 
wind 5-15 kt. 

KBOS Terminal...High confidence.

KBDL Terminal...High confidence. 

Outlook /Thursday through Sunday/...

Thursday: VFR. Breezy. Slight chance RA.

Thursday Night: Mainly VFR, with areas MVFR possible. Windy
with local gusts up to 30 kt. RA likely.

Friday: VFR. Breezy. Slight chance RA.

Friday Night: Breezy. 

Saturday:

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Wednesday...High confidence.

High pressure will build across the waters today, then pass
south of the waters Wednesday. Will still be dealing with light
rain or snow showers across the eastern MA coastal waters
through daybreak, and perhaps a little longer across the waters
east of Cape Cod and around Nantucket.

Winds diminish today, but rough seas will take time to subside 
across the outer coastal waters. Tweaked the timing of the Small
Craft Advisories across the waters into Wednesday.

Outlook /Wednesday Night through Sunday/...

Wednesday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft. Slight chance of rain. 

Thursday: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Seas up to 5 ft. Slight chance of rain. 

Thursday Night: Strong winds with gusts up to 35 kt. Areas of
rough seas. Rain likely. 

Friday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of rough seas. Chance of rain. 

Friday Night: Winds less than 25 kt. Areas of rough seas. 

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

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 1 AM EDT Wednesday for ANZ250.
     Small Craft Advisory until 4 PM EDT this afternoon for ANZ251-
     256.
     Small Craft Advisory until 10 AM EDT Wednesday for ANZ254-255.

&&

$$

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

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