Lexington Weather

Current Conditions [‒] Current Conditions [+]

44.8°F Warmer than last hour.

7.1°C

Chilly

Partly cloudy

Today: Hi 46 °F

Tonight: Lo 32 °F

Dew Point: 23.7°F Decreased 3.4°F since last hour.

Humidity: 43% Decreased 9.0% 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: 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 -
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 241825
AFDBOX

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

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...

- Warming trend during next 2 days with unseasonably mild
  conditions Thu. Scattered showers Wednesday night into early
  Thursday, otherwise mainly dry weather.

- A strong cold front brings rainy and cooler conditions Friday
  into the weekend.

&&

.DISCUSSION...
KEY MESSAGE 1...Warming trend during next 2 days with unseasonably 
mild conditions Thu. Scattered showers Wednesday night into early 
Thursday, otherwise mainly dry weather.

Weak subsidence behind a departing northern stream shortwave 
tonight will bring dry conditions through Wed. Varying amounts 
of cloud cover tonight, then sunshine will give way to 
increasing mid-high clouds Wed in developing weak warm advection
pattern. SW flow will bring milder air into the region Wed with
highs getting into the 50s away from the south coast. 

A weak shortwave passage Wed night with deepening moisture 
plume moving through may lead to a few showers Wed night into 
early Thu, otherwise drying out Thu with clouds giving way to 
partial sunshine. But clouds will move back in toward the end 
of the day with a low risk of showers moving into W MA ahead of 
approaching frontal system. However, most if not all the 
rainfall should hold off until Thu night. Becoming unseasonably 
mild Thu as increasing SW flow develops with warming low level 
temps. 925 mb temps increasing to 10C should support highs 
reaching the low-mid 60s, except 50s south of PVD-TAN-PYM, Cape 
Ann and higher terrain. Decent pressure gradient in place so 
expect breezy SW winds with soundings supporting gusts to 20-30 
mph a times. 

KEY MESSAGE 2...A strong cold front brings rainy and cooler conditions 
Friday into the weekend.

A strong cold front approaches southern New England Thursday night 
into early Friday morning, bringing another widespread, soaking 
rain. Ensemble guidance is currently indicating a surge of moist 
air ahead of the front, enhancing PWATs to 1.10"-1.25"... roughly 
200-250 percent of normal for this time of year. Currently thinking 
this rain would last through the night and into a good portion of 
Friday morning, but it's still a little early to nail down exact 
timing... regardless, southern New England could potentially see up 
to 0.5" of rain.

Post-FROPA on Friday, a drier airmass will push into the region. 
Winds pick up as the boundary layer becomes well mixed throughout 
the day, with 20-30mph winds possible. As this drier airmass moves 
through, it will also bring dropping 850mb temps with ensembles 
indicating temps dropping down to -16C... roughly a -17C temperature 
anomaly. 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 and Sunday before 
rebounding into the low 50s for the start of the next work week.

&&

.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 SW increasing to 10-20 kt 
Wed afternoon.

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: Mainly VFR, with local MVFR possible. Breezy. Slight
chance RA.

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

Friday: Mainly VFR, with local MVFR possible. Breezy. Slight
chance RA.

Friday Night through Saturday Night: VFR. 

Sunday: VFR. Breezy. 

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Wednesday night...High confidence.

A brief surge of SW winds to 25 kt develop tonight across eastern MA 
waters where SCA in effect. Then winds diminishing by daybreak Wed. 
SW winds increase again late Wed night and especially Thu. 5-6 ft 
seas over eastern MA waters will subside late tonight. 

Outlook /Thursday through Sunday/...

Thursday: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Areas of seas approaching 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. Seas up to 5 ft. 

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

Saturday Night through Sunday: Winds less than 25 kt. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 8 PM this evening to 7 AM EDT 
     Wednesday for ANZ231-251.
     Small Craft Advisory until 7 AM EDT Wednesday for ANZ250-254-
     255.

&&

$$

DISCUSSION...KJC/McMinn
AVIATION...KJC
MARINE...KJC

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