Lexington Weather

Current Conditions [‒] Current Conditions [+]

67.5°F Warmer than last hour.

19.7°C

Comfortable

Clear

Today: Hi 66 °F

Tonight: Lo 51 °F

Dew Point: 43.0°F Increased 0.9°F since last hour .

Humidity: 41% Decreased 4.0% since last hour.

Air Quality Index: 34

Good

(Fine Particles)

Barometer: 29.94 in Falling 0.03 inHg/hr

1014 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Sunday: 0.00 in

Visibility: 10 miles

Wind:

Now: 3 mph

Avg: 1 mph

Gusts: 9 mph

OTHER PERSONAL WEATHER STATIONS

Alerts / Advisories [‒] Alerts / Advisories [+]

Southeast Middlesex County, MA - Special Weather Statement
- SEE ALL NEARBY ALERTS -

NWS Weather Forecast -
Today, Tonight, & Tuesday through Sunday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Mon Mar 30, 2026 10:14am EDT

Special Weather Statement

Today:

Mostly Cloudy

Hi 66 °F

Mostly cloudy, with a high near 66. Southwest wind around 15 mph, with gusts as high as 28 mph.

Tonight:

Mostly Cloudy then Chance Light Rain

Lo 51 °F

A chance of rain after midnight. Mostly cloudy, with a low around 51. Southwest wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Tuesday:

Light Rain Likely

Hi 64 °F

Rain likely. Cloudy. High near 64, with temperatures falling to around 56 in the afternoon. South wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

Tuesday Night:

Chance Light Rain

Lo 50 °F

A chance of rain. Mostly cloudy, with a low around 50. Southeast wind 7 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

Wednesday:

Light Rain Likely

Hi 72 °F

Rain likely. Mostly cloudy, with a high near 72. West wind around 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

Wednesday Night:

Chance Light Rain

Lo 40 °F

A chance of rain. Mostly cloudy, with a low around 40. North wind 6 to 9 mph. Chance of precipitation is 50%.

Thursday:

Chance Light Rain

Hi 43 °F

A chance of rain. Cloudy, with a high near 43. Northeast wind around 10 mph. Chance of precipitation is 50%.

Thursday Night:

Chance Light Rain

Lo 37 °F

A chance of rain. Cloudy, with a low around 37. East wind 6 to 9 mph. Chance of precipitation is 50%.

Friday:

Chance Light Rain

Hi 57 °F

A chance of rain. Cloudy, with a high near 57. Southeast wind 6 to 9 mph. Chance of precipitation is 50%.

Friday Night:

Chance Light Rain

Lo 45 °F

A chance of rain. Mostly cloudy, with a low around 45. Southwest wind around 8 mph. Chance of precipitation is 50%.

Saturday:

Chance Light Rain

Hi 56 °F

A chance of rain. Cloudy, with a high near 56. Northeast wind around 9 mph. Chance of precipitation is 30%.

Saturday Night:

Chance Light Rain

Lo 42 °F

A chance of rain. Cloudy, with a low around 42. East wind 6 to 9 mph. Chance of precipitation is 50%.

Sunday:

Chance Light Rain

Hi 61 °F

A chance of rain. Cloudy, with a high near 61. South wind 6 to 10 mph. Chance of precipitation is 50%.

Sunday Night:

Rain Likely

Lo 43 °F

Rain likely. Mostly cloudy, with a low around 43. Southwest wind around 10 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Wed 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Mon Mar 30, 2026 10:14am EDT

2:00pm

Mostly Cloudy

64°F
Dew Pt 38°F
Wind from SW

SW 15 mph
Precip: 4%

3:00pm

Mostly Cloudy

66°F
Dew Pt 38°F
Wind from SW

SW 14 mph
Precip: 7%

4:00pm

Mostly Cloudy

66°F
Dew Pt 39°F
Wind from SW

SW 14 mph
Precip: 10%

5:00pm

Mostly Cloudy

65°F
Dew Pt 40°F
Wind from SW

SW 13 mph
Precip: 12%

6:00pm

Mostly Cloudy

63°F
Dew Pt 41°F
Wind from SW

SW 13 mph
Precip: 12%

7:00pm

Mostly Cloudy

61°F
Dew Pt 42°F
Wind from SW

SW 10 mph
Precip: 12%

8:00pm

Mostly Cloudy

59°F
Dew Pt 43°F
Wind from SW

SW 10 mph
Precip: 11%

9:00pm

Mostly Cloudy

57°F
Dew Pt 44°F
Wind from SW

SW 9 mph
Precip: 11%

10:00pm

Mostly Cloudy

56°F
Dew Pt 45°F
Wind from SW

SW 9 mph
Precip: 11%

11:00pm

Mostly Cloudy

55°F
Dew Pt 46°F
Wind from SW

SW 8 mph
Precip: 11%

Tue
12:00am

Slight Chance Light Rain

55°F
Dew Pt 46°F
Wind from SW

SW 8 mph
Precip: 18%

Tue
1:00am

Chance Light Rain

55°F
Dew Pt 47°F
Wind from SW

SW 7 mph
Precip: 25%

Tue
2:00am

Chance Light Rain

54°F
Dew Pt 48°F
Wind from SW

SW 6 mph
Precip: 31%
Rain: 0.01 in

Tue
3:00am

Chance Light Rain

53°F
Dew Pt 48°F
Wind from SW

SW 6 mph
Precip: 33%
Rain: 0.01 in

Tue
4:00am

Chance Light Rain

53°F
Dew Pt 48°F
Wind from SW

SW 6 mph
Precip: 35%
Rain: 0.01 in

Tue
5:00am

Chance Light Rain

53°F
Dew Pt 49°F
Wind from SW

SW 6 mph
Precip: 36%
Rain: 0.01 in

Tue
6:00am

Chance Light Rain

52°F
Dew Pt 49°F
Wind from SW

SW 6 mph
Precip: 38%
Rain: 0.01 in

Tue
7:00am

Chance Light Rain

52°F
Dew Pt 49°F
Wind from S

S 5 mph
Precip: 40%
Rain: 0.02 in

Tue
8:00am

Chance Light Rain

52°F
Dew Pt 48°F
Wind from S

S 5 mph
Precip: 42%
Rain: 0.01 in

Tue
9:00am

Chance Light Rain

53°F
Dew Pt 49°F
Wind from S

S 8 mph
Precip: 46%
Rain: 0.01 in

Tue
10:00am

Chance Light Rain

55°F
Dew Pt 50°F
Wind from S

S 9 mph
Precip: 51%
Rain: 0.01 in

Tue
11:00am

Light Rain Likely

57°F
Dew Pt 50°F
Wind from SW

SW 6 mph
Precip: 56%
Rain: 0.01 in

Tue
12:00pm

Chance Light Rain

58°F
Dew Pt 50°F
Wind from SW

SW 8 mph
Precip: 48%
Rain: 0.01 in

Tue
1:00pm

Chance Light Rain

58°F
Dew Pt 50°F
Wind from SW

SW 9 mph
Precip: 40%

Tue
2:00pm

Chance Light Rain

58°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 31%
Rain: 0.01 in

Tue
3:00pm

Chance Light Rain

58°F
Dew Pt 48°F
Wind from S

S 7 mph
Precip: 31%
Rain: 0.01 in

Tue
4:00pm

Chance Light Rain

57°F
Dew Pt 47°F
Wind from E

E 7 mph
Precip: 31%
Rain: 0.01 in

Tue
5:00pm

Chance Light Rain

56°F
Dew Pt 46°F
Wind from E

E 9 mph
Precip: 31%
Rain: 0.01 in

Tue
6:00pm

Chance Light Rain

55°F
Dew Pt 46°F
Wind from E

E 7 mph
Precip: 28%
Rain: 0.01 in

Tue
7:00pm

Chance Light Rain

53°F
Dew Pt 47°F
Wind from E

E 8 mph
Precip: 26%
Rain: 0.01 in

Tue
8:00pm

Slight Chance Light Rain

52°F
Dew Pt 47°F
Wind from E

E 7 mph
Precip: 24%

Tue
9:00pm

Chance Light Rain

51°F
Dew Pt 47°F
Wind from E

E 7 mph
Precip: 29%
Rain: 0.01 in

Tue
10:00pm

Chance Light Rain

51°F
Dew Pt 46°F
Wind from S

S 8 mph
Precip: 34%
Rain: 0.01 in

Tue
11:00pm

Chance Light Rain

51°F
Dew Pt 46°F
Wind from S

S 8 mph
Precip: 39%
Rain: 0.01 in

Wed
12:00am

Chance Light Rain

51°F
Dew Pt 47°F
Wind from S

S 8 mph
Precip: 39%
Rain: 0.01 in

Wed
1:00am

Chance Light Rain

52°F
Dew Pt 48°F
Wind from SW

SW 9 mph
Precip: 39%
Rain: 0.01 in

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 301739
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
139 PM EDT Mon Mar 30 2026

.WHAT HAS CHANGED...
Warm Wednesday but the spatial extent of 70 degree or greater 
temperatures appears to be less than previous forecast updates

&&

.KEY MESSAGES...

- Breezy and unseasonably mild today away from the south coast.

- Increasing risk for rainfall tonight into Tuesday. Above
  normal temperatures continue.

- Period of above normal temperatures peaks on Wednesday, with a
  chance for low to mid 70s highs. Strong cold front arrives
  Wednesday afternoon with a chance for showers and and isolated
  thunderstorm or two.

- Frontal passage brings significantly colder weather on
  northeast winds Thursday and Friday.

&&

.DISCUSSION...
KEY MESSAGE 1...Breezy and unseasonably mild today away from 
the south coast.

Offshore high pressure continues our southwest winds and above 
normal temperatures. Dry weather expected today, although there 
will be enough mid and high clouds around to limit sunshine at 
times. It will also be rather breezy, especially near the coast 
as a 40-60 kt low level jet develops. This jet is above a low 
level inversion, which will prevent these stronger winds from 
mixing down efficiently, especially over the coastal waters. 
Soundings still showed a shallow mixed layer supportive of 25-35
mph gusts over land.

Expecting minimum relative humidity to be higher today. In
collaboration with MA fire weather partners, will continue the
Special Weather Statement to raise awareness of some drier
fuels due to a lack of recent rainfall.

KEY MESSAGE 2...Increasing risk for rainfall tonight into
Tuesday. Above normal temperatures continue.

A backdoor front will push south from northern New England and 
may reach the northern MA border by Tuesday morning. Continued 
SW flow and advection of higher dewpoint air into our region 
will result in areas of stratus developing, and can't rule out 
patchy drizzle overnight along with a few showers as higher 
humidity moves in. Cloud cover and SW flow will keep low
temperatures tonight right around our normal high temperatures 
for late March.

This front lingers into Tuesday, keeping most of our region
within the warm sector of a low pressure moving into the Great
Lakes. Considerable cloudiness for all areas though, but weaker  
forcing (better to our north and west). A modest increase in 
humidity with drier air aloft probably favors very light rain 
or drizzle. Cannot completely dismiss the idea of an isolated
thunderstorm or two creeping past the Berkshires from NY state 
during the afternoon. Well above normal temperatures continue.

KEY MESSAGE 3...Period of above normal temperatures peaks on
Wednesday, with a chance for lower to mid 70s highs. Strong cold 
front arrives Wednesday afternoon with a chance for showers and 
and isolated thunderstorm or two.

Still looking like quite a warm day Wednesday although recent
guidance has honed in on the chance for slightly cooler
conditions (widespread 60s instead of 70s). Still, with 925mb
temps as high as +15C, the potential exists for highs in the mid 
70s in some of the usually warmer spots (CT and Merrimack
Valleys). Most locations likely warm into 60s/low 70s away from 
the south coast where highs will be kept cooler in the 50s/lower
60s given SW winds off the water. How warm we ultimately get
will depend on the still-unclear timing of a cold front that
will be shifting southeastward. Front also brings a better
chance for at least showers, but with a low chance for a rumble 
or two of thunder based on narrow CAPE profiles with surface- 
based CAPEs around 500 J/kg. Front should have made it into the 
southern waters by overnight, with temps on the downswing into 
the upper 30s to mid 40s as the front moves south. 

KEY MESSAGE 4...Frontal passage brings significantly colder
weather on northeast winds Thursday and Friday.

Heights build to >570dm late week as an upper level ridge builds
across the eastern CONUS. We won't feel the impacts from these
building heights at the surface, however, as the late week/early 
weekend still appears cooler, overcast and raw. Increasing NE
winds pushes a shallow layer of cold air south across the area.
Temps aloft remain quite warm under SWly 850-500 mb flow with 
925 mb temps around +2 to +8C. Although the threat for wintry 
precipitation looks minimal now, this strong inversion will
maintain low clouds with intermittent showers and likely lead to 
a pretty raw day on Thurs. NBM temps in the mid 40s to lower 
50s are almost certainly too optimistic following its typical
diurnal temperature curve, and that's very probably not
appropriate given overcast and persistent NE winds. Plenty of
room to go lower on temps in future updates but potential exists 
for widespread upper 30s to mid 40s with NE winds Thurs around 
10-15 mph. Temps probably not going very far either Thurs night 
or Fri with highs in the mid 40s, with a better shot at 
widespread rain Fri as a cool front moves in from NY. 

Another period of strengthening northeast winds likely brings a 
reinforcing shot cooler temps Saturday. May see some relief 
from the cooler conditions ahead of a frontal system Sunday, but
that may come at the cost of some showers.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
Low - less than 30 percent. 
Moderate - 30 to 60 percent. 
High - greater than 60 percent.

18z Update...

Through 00z...High Confidence.

VFR. SW gusts to 25-35 kt. Areas of LLWS.

Tonight and Tuesday...Moderate confidence.

VFR this evening, then conditions lowering to MVFR-IFR as
scattered showers develop and move though the region late
tonight and Tue morning. Brief downpours and an isolated 
t-storm possible. Improving to MVFR-VFR in the afternoon. A few
showers/t-storms may redevelop across the interior late 
afternoon and evening. Winds diminish a bit tonight, then SW
gusts to 25 kt redeveloping Tue near the south coast. Winds
shifting to N-NE across NE half of SNE during the afternoon as 
backdoor front pushes southward.

Tuesday night...Moderate confidence. 

Mostly VFR, but areas of MVFR-IFR may redevelop across central
and eastern MA. Low confidence on areal coverage of lower cigs. 
Backdoor front lifts back north as a warm front with winds
shifting back to SW in areas with a N-NE wind. Gusts to 25-30 kt
along the south coast. 

KBOS Terminal...Moderate confidence in TAF. Can't rule out an
isold t-storm late tonight or Tue morning. 

KBDL Terminal...Moderate confidence in TAF. Can't rule out an
isold t-storm late tonight or Tue morning. 

Outlook /Wednesday through Saturday/...

Wednesday: Mainly VFR, with areas MVFR possible. Windy with
areas of gusts up to 30 kt. Chance RA.

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

Thursday through Thursday Night: MVFR/IFR conditions possible.
Breezy. Chance RA.

Friday: Mainly VFR, with local IFR possible. Breezy. Chance RA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Persistent gusty SW winds will continue today. Could see some
gusts approach gale force across the waters south and east of
Nantucket, as well as the outer RI coastal waters, but think a 
Small Craft Advisory is more appropriate. Winds and seas briefly
subside tonight into Tuesday, but still expecting rough seas
across the southern coastal waters. Extended the Small Craft
Advisory into Wednesday where confidence is highest.

Outlook /Tuesday Night through Saturday/...

Tuesday Night: Strong winds with gusts up to 35 kt. Rough seas
up to 13 ft. Slight chance of rain. 

Wednesday: Low risk for gale force winds with gusts up to
35 kt. Rough seas up to 12 ft. Chance of rain. 

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

Thursday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Seas up to 5 ft. Chance of rain. 

Thursday Night through Friday: Winds less than 25 kt. Seas up
to 5 ft. Chance of rain.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ230-
     236.
     Small Craft Advisory until 11 PM EDT this evening for ANZ231-
     250-251.
     Small Craft Advisory until 2 AM EDT Tuesday for ANZ232>234.
     Small Craft Advisory until 7 PM EDT Wednesday for ANZ235-237-
     254>256.

&&

$$

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

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