Lexington Weather

Current Conditions [‒] Current Conditions [+]

54.3°F Colder than last hour.

12.4°C

Cool

Few Clouds

Overnight: Lo 53 °F

Thursday: Hi 60 °F

Dew Point: 49.6°F Decreased 0.4°F since last hour.

Humidity: 84% Increased 1.0% since last hour.

Air Quality Index: 39

Good

(Ozone)

Barometer: 29.80 in S

1009 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Wednesday: 0.01 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 1 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Overnight, Thursday, & Thursday Night through Wednesday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu May 14, 2026 1:21am EDT

Overview:

- Widespread rainfall Thu into Fri, cooling down Friday before the weekend's warm-up.

- Dry with well above normal temperatures Saturday through the middle of next week.

Overnight:

Mostly Cloudy

Lo 53 °F

Mostly cloudy, with a low around 53. South wind around 8 mph.

Thursday:

Rain Showers

Hi 60 °F

Rain showers after 7am. Cloudy. High near 60, with temperatures falling to around 54 in the afternoon. Southeast wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night:

Rain Showers

Lo 48 °F

Rain showers. Cloudy, with a low around 48. Northeast wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Friday:

Rain Showers Likely

Hi 52 °F

Rain showers likely. Cloudy, with a high near 52. Northeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Friday Night:

Slight Chance Rain Showers then Partly Cloudy

Lo 48 °F

A slight chance of rain showers before 8pm. Partly cloudy, with a low around 48. Northwest wind around 6 mph. Chance of precipitation is 20%.

Saturday:

Sunny

Hi 75 °F

Sunny, with a high near 75. Southwest wind 6 to 9 mph.

Saturday Night:

Partly Cloudy

Lo 57 °F

Partly cloudy, with a low around 57. Southwest wind 6 to 9 mph.

Sunday:

Slight Chance Rain Showers

Hi 80 °F

A slight chance of rain showers after 9am. Mostly sunny, with a high near 80. West wind 6 to 10 mph.

Sunday Night:

Mostly Clear

Lo 56 °F

Mostly clear, with a low around 56. Northwest wind 3 to 9 mph.

Monday:

Sunny

Hi 74 °F

Sunny, with a high near 74. East wind 3 to 8 mph.

Monday Night:

Partly Cloudy

Lo 56 °F

Partly cloudy, with a low around 56. South wind around 7 mph.

Tuesday:

Mostly Sunny

Hi 85 °F

Mostly sunny, with a high near 85. Southwest wind 5 to 12 mph.

Tuesday Night:

Slight Chance Rain Showers

Lo 61 °F

A slight chance of rain showers between 11pm and 1am. Partly cloudy, with a low around 61. Southwest wind 5 to 10 mph.

Wednesday:

Mostly Sunny then Chance Rain Showers

Hi 86 °F

A chance of rain showers after 2pm. Mostly sunny, with a high near 86. West wind 5 to 10 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 3am through Fri 2pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu May 14, 2026 1:21am EDT

3:00am

Mostly Cloudy

53°F
Dew Pt 48°F
Wind from S

S 8 mph
Precip: 1%

4:00am

Mostly Cloudy

53°F
Dew Pt 48°F
Wind from S

S 8 mph
Precip: 6%

5:00am

Mostly Cloudy

53°F
Dew Pt 48°F
Wind from S

S 8 mph
Precip: 10%

6:00am

Cloudy

54°F
Dew Pt 49°F
Wind from S

S 8 mph
Precip: 13%

7:00am

Slight Chance Rain Showers

55°F
Dew Pt 51°F
Wind from S

S 8 mph
Precip: 16%

8:00am

Slight Chance Rain Showers

58°F
Dew Pt 51°F
Wind from S

S 8 mph
Precip: 18%
Rain: 0.01 in

9:00am

Slight Chance Rain Showers

59°F
Dew Pt 52°F
Wind from S

S 9 mph
Precip: 21%
Rain: 0.01 in

10:00am

Chance Rain Showers

59°F
Dew Pt 52°F
Wind from SE

SE 9 mph
Precip: 27%
Rain: 0.02 in

11:00am

Chance Rain Showers

60°F
Dew Pt 53°F
Wind from SE

SE 9 mph
Precip: 33%
Rain: 0.02 in

12:00pm

Chance Rain Showers

60°F
Dew Pt 54°F
Wind from SE

SE 9 mph
Precip: 39%
Rain: 0.02 in

1:00pm

Chance Rain Showers

60°F
Dew Pt 53°F
Wind from SE

SE 9 mph
Precip: 45%
Rain: 0.03 in

2:00pm

Chance Rain Showers

59°F
Dew Pt 53°F
Wind from E

E 10 mph
Precip: 51%
Rain: 0.07 in

3:00pm

Rain Showers Likely

58°F
Dew Pt 52°F
Wind from E

E 10 mph
Precip: 65%
Rain: 0.09 in

4:00pm

Rain Showers

56°F
Dew Pt 53°F
Wind from E

E 10 mph
Precip: 80%
Rain: 0.12 in

5:00pm

Rain Showers

54°F
Dew Pt 52°F
Wind from E

E 9 mph
Precip: 94%
Rain: 0.14 in

6:00pm

Rain Showers

54°F
Dew Pt 51°F
Wind from E

E 8 mph
Precip: 94%
Rain: 0.14 in

7:00pm

Rain Showers

53°F
Dew Pt 50°F
Wind from E

E 7 mph
Precip: 94%
Rain: 0.14 in

8:00pm

Rain Showers

52°F
Dew Pt 50°F
Wind from NE

NE 6 mph
Precip: 87%
Rain: 0.04 in

9:00pm

Rain Showers

52°F
Dew Pt 50°F
Wind from NE

NE 6 mph
Precip: 79%
Rain: 0.04 in

10:00pm

Rain Showers

52°F
Dew Pt 50°F
Wind from NE

NE 6 mph
Precip: 77%
Rain: 0.04 in

11:00pm

Rain Showers

52°F
Dew Pt 50°F
Wind from NE

NE 6 mph
Precip: 75%
Rain: 0.04 in

Fri
12:00am

Rain Showers Likely

50°F
Dew Pt 49°F
Wind Chill: 48°F
Wind from NE

NE 5 mph
Precip: 72%
Rain: 0.03 in

Fri
1:00am

Rain Showers Likely

50°F
Dew Pt 48°F
Wind Chill: 48°F
Wind from NE

NE 5 mph
Precip: 70%
Rain: 0.03 in

Fri
2:00am

Rain Showers Likely

50°F
Dew Pt 48°F
Wind Chill: 48°F
Wind from NE

NE 5 mph
Precip: 68%
Rain: 0.02 in

Fri
3:00am

Rain Showers Likely

49°F
Dew Pt 48°F
Wind Chill: 47°F
Wind from NE

NE 5 mph
Precip: 70%
Rain: 0.02 in

Fri
4:00am

Rain Showers Likely

49°F
Dew Pt 47°F
Wind Chill: 47°F
Wind from NE

NE 6 mph
Precip: 55%
Rain: 0.01 in

Fri
5:00am

Chance Rain Showers

49°F
Dew Pt 47°F
Wind Chill: 47°F
Wind from NE

NE 6 mph
Precip: 48%
Rain: 0.01 in

Fri
6:00am

Chance Rain Showers

48°F
Dew Pt 47°F
Wind Chill: 45°F
Wind from NE

NE 7 mph
Precip: 45%
Rain: 0.01 in

Fri
7:00am

Chance Rain Showers

48°F
Dew Pt 47°F
Wind Chill: 45°F
Wind from NE

NE 7 mph
Precip: 53%
Rain: 0.01 in

Fri
8:00am

Rain Showers Likely

48°F
Dew Pt 47°F
Wind Chill: 45°F
Wind from NE

NE 7 mph
Precip: 61%
Rain: 0.02 in

Fri
9:00am

Rain Showers Likely

49°F
Dew Pt 47°F
Wind Chill: 46°F
Wind from NE

NE 7 mph
Precip: 63%
Rain: 0.02 in

Fri
10:00am

Rain Showers Likely

49°F
Dew Pt 48°F
Wind Chill: 46°F
Wind from NE

NE 8 mph
Precip: 73%
Rain: 0.02 in

Fri
11:00am

Rain Showers Likely

50°F
Dew Pt 47°F
Wind Chill: 47°F
Wind from NE

NE 8 mph
Precip: 69%
Rain: 0.02 in

Fri
12:00pm

Chance Rain Showers

50°F
Dew Pt 47°F
Wind Chill: 47°F
Wind from NE

NE 8 mph
Precip: 49%
Rain: 0.01 in

Fri
1:00pm

Chance Rain Showers

50°F
Dew Pt 47°F
Wind Chill: 47°F
Wind from NE

NE 8 mph
Precip: 31%
Rain: 0.01 in

Fri
2:00pm

Cloudy

51°F
Dew Pt 47°F
Wind from NE

NE 7 mph
Precip: 14%
Rain: 0.01 in

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 140638
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
238 AM EDT Thu May 14 2026

.WHAT HAS CHANGED...
No signficant changes.

&&

.KEY MESSAGES...

- Widespread rainfall Thu into Fri, cooling down Friday before
  the weekend's warm-up. 

- Dry with well above normal temperatures Saturday through the 
  middle of next week.

&&

.DISCUSSION...
KEY MESSAGE 1...Widespread rainfall Thu into Fri, cooling down 
Friday before the weekend's warm-up. 

Southern New England is situated between high pressure over the 
western Atlantic and a 1004mb low pressure center over the great 
Lakes. The warm front extending from that low is making its way 
north through New England this afternoon and led to light showers 
out ahead earlier this afternoon. These have cleared and we expect 
that to remain the case the rest of the day as some marginally drier 
air moves in in the 850-600mb layer and a lack of much forcing 
behind the front. Otherwise, breezy conditions the rest of the day 
as the well mixed BL taps into a 35-40 kt 850mb jet overhead. 

As the upper level low digs into the southeast it sets us up for a 
cool and wet Thursday (lingering into Friday thanks to the 
amplified, slowly evolving pattern). This places SNE beneath a plume 
of anomolous moisture (PWATs over 1" are in the 99th percentile of 
climatology). Together with strong synoptic forcing from strong PVA, 
favorable placement beneath a 300mb jet, and convergence in the mid 
levels most locations in the region can expect 1 to 2 inches of rain 
before all is said and done. Rain arrives in western SNE Thursday 
morning, overspreading the region through the day and ending in the 
early overnight hours. There may be two bullseyes of highest rain 
totals, one over the western MA/CT high terrain thanks to upslope 
flow, and another over eastern MA associated with a secondary
low that looks to form between the parent low to our NW and  
another disturbance passing by over the Atlantic. Fortunately, 
given the prolonged nature of the rain, not expecting flooding 
to be a concern. Finally, dewpoints may reach the low to mid 50s
Thursday afternoon contributing to several hundred J/kg of 
elevated CAPE, so may have some embedded thunderstorms as well. 

Friday will be drier as the surface low slowly moves east but the 
upper low lingers overhead. This turns winds out of the northeast 
while low level moisture remains locked in. So, expect a cool, 
cloudy, day with off and on light rain/drizzle; more likely to 
remain dry the further west you go. The upper level airmass doesn't 
change much, so expecting high temperatures for the western half of 
the region to be similar to Thursday, in the upper 50s (high 
elevation) to low 60s (CT Valley). The difference will be felt in 
eastern MA and RI where that onshore flow will drop high 
temperatures from the low/mid 60s Thursday to the upper 50s on 
Friday. This is approaching 10 degrees cooler than normal. 

KEY MESSAGE 2...Dry with well above normal temperatures 
Saturday through the middle of next week.

A persistent ridge sets up over the east CONUS on Saturday and 
remains quasi-stationary through the middle of next week. This will 
support a persistent area of high pressure off the southeast that 
will advect warm, moist air into southern New England for 
several days. Expect several consecutive days with high 
temperatures in the 70s for much of southern New England, with 
low to mid 80s possible on Tuesday and Wednesday. Low temps 
forecast to be mainly in the 50s during this stretch. Overall a 
warm,dry, and quiet stretch of weather between Saturday and the 
middle of next week.

&&

.AVIATION /06Z THURSDAY THROUGH MONDAY/...
Forecaster Confidence Levels...

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

06Z TAF Update:

Through 12z Thursday: High confidence. 

Mainly VFR for BED-PVD eastward, although VFR/MVFR ceilings 
with 5-6 SM visby light SHRA mainly BDL to ORH starting 07-09z.
S to SE winds around 5-10 kt, on higher end of that range in 
eastern MA/RI.

Today: Moderate confidence. 

Through at least 15z, lowest categories for BDL and ORH with
rain with MVFR ceilings and MVFR visby. Mainly VFR should govern
the rest of the TAFs thru that timeframe, outside of a
brief/passing -SHRA. The exact timing of rain into eastern MA
and RI is uncertain, but the risk increases for MVFR/IFR 
cigs/visby SHRA/+SHRA in the 17-20z timeframe for eastern MA 
and RI, moving gradually to the N/NE. Locally heavy downpours 
could be possible, with a low/outside chc at TS. 

SE winds around 8-12 kt to start, then slowly back to E thru the
aftn, and could become light NE/N in the interior.

Tonight: Moderate confidence. 

Steadier SHRA tapers off to an intermittent -SHRA or even -DZ 
by 00-03z. MVFR/IFR ceilings then deteriorate to IFR to LIFR 
for most TAFs. Mist/fog possible too with IFR visbys. Coastal NE
winds 5-10 kt, interior winds N/NW 5 kt or less. 

Friday: Moderate confidence. 

IFR generally prevails, though some optimism for MVFR ceilings
toward BDL late in the day. Periods of light -SHRA or -DZ, with
better chance for steadier light rain for eastern/coastal MA. NE
winds become N/NW around 5-10 kt, though around 10-12 kt for
eastern MA. 

KBOS...Moderate confidence. VFR to start, SE winds developing 
by 10z. OVC VFR (MVFR decks lurking around?) as soon as 15z, but
think MVFR ceilings steadier rain more likely after 17z, with 
IFR- visby moderate to heavy SHRA by 20z with winds becoming 
easterly around 10 kt. SHRA ends around 02-03z to more of a -DZ 
but ceilings then go to IFR/LIFR levels as winds become NE. 

KBDL...Moderate confidence. VFR becoming MVFR in SHRA by 07-08z.
SHRA continues thru most of the day with MVFR ceilings; rain
tapers off to intermittent SHRA/DZ by 00z, but ceilings then go
to IFR/LIFR levels.

Outlook /Friday through Monday/...

Friday: Mainly VFR, with areas IFR possible. Slight chance
SHRA.

Friday Night: VFR. 

Saturday through Saturday Night: VFR. Breezy. 

Sunday: VFR. Breezy. Slight chance SHRA.

Sunday Night through Monday: VFR. 

&&

.MARINE...
Forecaster Confidence Levels...

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

2 AM update...

Today through Thursday...High confidence.

Strengthening low level SW jet moves across SNE today, with light SW 
early this morning, becoming south and increasing to 20-25 kt this 
afternoon, except 25-30 kt in gusts near shore. Hence, SCA remains 
posted. Other than a spot morning shower across northern MA waters, 
dry weather and good vsby prevail today. South winds slacken tonight 
with mainly dry weather. Rough conditions Thu, with S-SE winds 20-25 
kt in the morning, then slacken in the afternoon and become east as 
low pressure tracks south of New England. This low will bring 
widespread rain to region Thu, moderate to heavy at times with 
reduced vsby.

Outlook /Friday through Monday/...

Friday: Winds less than 25 kt. Areas of rough seas. Chance of
rain showers. 

Friday Night through Saturday Night: Winds less than 25 kt.
Seas up to 5 ft. 

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

Sunday Night through Monday: Winds less than 25 kt. Areas of
seas approaching 5 ft. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...None.

&&

$$

DISCUSSION...BW/RM
AVIATION...Loconto
MARINE...BW

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