Lexington Weather

Current Conditions [‒] Current Conditions [+]

59.7°F Colder than last hour.

15.4°C

Cool

Clear

Overnight: Lo 54 °F

Tuesday: Hi 79 °F

Dew Point: 53.2°F Increased 0.3°F since last hour .

Humidity: 79% Increased 3.0% since last hour.

Air Quality Index: 27

Good

(Fine Particles)

Barometer: 30.09 in S

1019 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Monday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Overnight, Tuesday, & Tuesday Night through Monday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Tue Sep 8, 2026 3:15am EDT

Overview:

- Mainly Dry/pleasant today and Wed. Highs in the upper 70s to the lower 80s both days...albeit a bit more humid Wed. - Breezy, warm and humid Wed night into Thu with brief scattered showers possible...but the vast majority of this time will be dry.

- Mainly dry/pleasant with lower humidity Fri into Sat with highs mainly in the 70s. Turning a bit more humid/warmer Sun into Mon.

Overnight:

Mostly Cloudy

Lo 54 °F

Mostly cloudy, with a low around 54. West wind around 2 mph.

Tuesday:

Mostly Sunny

Hi 79 °F

Mostly sunny, with a high near 79. North wind 3 to 12 mph.

Tuesday Night:

Mostly Cloudy

Lo 59 °F

Mostly cloudy, with a low around 59. East wind 1 to 7 mph.

Wednesday:

Mostly Cloudy

Hi 81 °F

Mostly cloudy, with a high near 81. Southeast wind 2 to 13 mph, with gusts as high as 23 mph.

Wednesday Night:

Mostly Cloudy then Chance Rain Showers

Lo 69 °F

A chance of rain showers after 2am. Mostly cloudy, with a low around 69. Southwest wind 12 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

Thursday:

Chance Rain Showers

Hi 87 °F

A chance of rain showers before 2pm. Mostly sunny, with a high near 87. West wind around 15 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

Thursday Night:

Mostly Cloudy

Lo 61 °F

Mostly cloudy, with a low around 61. West wind 6 to 14 mph.

Friday:

Sunny

Hi 74 °F

Sunny, with a high near 74. Northwest wind around 8 mph.

Friday Night:

Clear

Lo 50 °F

Clear, with a low around 50. Northwest wind around 5 mph.

Saturday:

Sunny

Hi 75 °F

Sunny, with a high near 75. Southeast wind 2 to 7 mph.

Saturday Night:

Partly Cloudy

Lo 57 °F

Partly cloudy, with a low around 57. South wind around 7 mph.

Sunday:

Mostly Sunny

Hi 79 °F

Mostly sunny, with a high near 79. Southwest wind 5 to 9 mph, with gusts as high as 22 mph.

Sunday Night:

Slight Chance Rain Showers

Lo 61 °F

A slight chance of rain showers between 8pm and 2am. Partly cloudy, with a low around 61. Southwest wind around 8 mph, with gusts as high as 21 mph.

Monday:

Mostly Sunny then Slight Chance Rain Showers

Hi 79 °F

A slight chance of rain showers after 2pm. Mostly sunny, with a high near 79. Northwest wind around 8 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 5am through Wed 4pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Tue Sep 8, 2026 3:15am EDT

5:00am

Mostly Cloudy

55°F
Dew Pt 50°F
Wind from W

W 2 mph
Precip: 0%

6:00am

Mostly Cloudy

56°F
Dew Pt 50°F
Wind from W

W 3 mph
Precip: 0%

7:00am

Partly Sunny

57°F
Dew Pt 51°F
Wind from W

W 5 mph
Precip: 0%

8:00am

Mostly Sunny

60°F
Dew Pt 53°F
Wind from W

W 5 mph
Precip: 1%

9:00am

Mostly Sunny

64°F
Dew Pt 54°F
Wind from W

W 6 mph
Precip: 1%

10:00am

Mostly Sunny

69°F
Dew Pt 54°F
Wind from NW

NW 7 mph
Precip: 2%

11:00am

Mostly Sunny

73°F
Dew Pt 55°F
Wind from NW

NW 8 mph
Precip: 1%

12:00pm

Mostly Sunny

75°F
Dew Pt 54°F
Wind from NW

NW 9 mph
Precip: 2%

1:00pm

Mostly Sunny

76°F
Dew Pt 54°F
Wind from N

N 10 mph
Precip: 2%

2:00pm

Partly Sunny

77°F
Dew Pt 55°F
Wind from N

N 12 mph
Precip: 2%

3:00pm

Partly Sunny

77°F
Dew Pt 55°F
Wind from N

N 10 mph
Precip: 2%

4:00pm

Partly Sunny

77°F
Dew Pt 55°F
Wind from NE

NE 9 mph
Precip: 1%

5:00pm

Partly Sunny

76°F
Dew Pt 57°F
Wind from NE

NE 7 mph
Precip: 1%

6:00pm

Mostly Cloudy

74°F
Dew Pt 57°F
Wind from NE

NE 7 mph
Precip: 1%

7:00pm

Mostly Cloudy

71°F
Dew Pt 58°F
Wind from E

E 6 mph
Precip: 1%

8:00pm

Mostly Cloudy

68°F
Dew Pt 58°F
Wind from E

E 5 mph
Precip: 1%

9:00pm

Mostly Cloudy

66°F
Dew Pt 59°F
Wind from E

E 3 mph
Precip: 1%

10:00pm

Mostly Cloudy

65°F
Dew Pt 59°F
Wind from SE

SE 3 mph
Precip: 1%

11:00pm

Mostly Cloudy

64°F
Dew Pt 59°F
Wind from SE

SE 2 mph
Precip: 1%

Wed
12:00am

Mostly Cloudy

63°F
Dew Pt 59°F
Wind from E

E 2 mph
Precip: 1%

Wed
1:00am

Mostly Cloudy

63°F
Dew Pt 59°F
Wind from E

E 2 mph
Precip: 1%

Wed
2:00am

Mostly Cloudy

62°F
Dew Pt 59°F
Wind from E

E 1 mph
Precip: 1%

Wed
3:00am

Mostly Cloudy

61°F
Dew Pt 59°F
Wind from E

E 1 mph
Precip: 1%

Wed
4:00am

Mostly Cloudy

61°F
Dew Pt 59°F
Wind from E

E 1 mph
Precip: 2%

Wed
5:00am

Mostly Cloudy

60°F
Dew Pt 59°F
Wind from E

E 1 mph
Precip: 2%

Wed
6:00am

Mostly Cloudy

60°F
Dew Pt 59°F
Wind from E

E 2 mph
Precip: 3%

Wed
7:00am

Mostly Cloudy

61°F
Dew Pt 60°F
Wind from SE

SE 3 mph
Precip: 2%

Wed
8:00am

Mostly Cloudy

62°F
Dew Pt 60°F
Wind from SE

SE 3 mph
Precip: 0%

Wed
9:00am

Mostly Cloudy

65°F
Dew Pt 61°F
Wind from SE

SE 6 mph
Precip: 0%

Wed
10:00am

Mostly Cloudy

69°F
Dew Pt 61°F
Wind from S

S 7 mph
Precip: 0%

Wed
11:00am

Mostly Cloudy

73°F
Dew Pt 61°F
Wind from S

S 9 mph
Precip: 0%

Wed
12:00pm

Mostly Cloudy

76°F
Dew Pt 61°F
Wind from S

S 10 mph
Precip: 0%

Wed
1:00pm

Mostly Cloudy

79°F
Dew Pt 61°F
Wind from S

S 12 mph
Precip: 0%

Wed
2:00pm

Mostly Cloudy

80°F
Dew Pt 61°F
Heat Index: 81°F
Wind from S

S 13 mph
Precip: 0%

Wed
3:00pm

Mostly Cloudy

80°F
Dew Pt 61°F
Heat Index: 81°F
Wind from S

S 12 mph
Precip: 0%

Wed
4:00pm

Mostly Cloudy

80°F
Dew Pt 62°F
Heat Index: 81°F
Wind from S

S 12 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 080743
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
343 AM EDT Tue Sep 8 2026

.WHAT HAS CHANGED...

Gale watches hoisted for later Wednesday night into Thursday morning 
for Buzzards Bay, Cape Cod Bay, and Nantucket sound.

&&

.KEY MESSAGES...

- Mainly Dry/pleasant today and Wed. Highs in the upper 70s to 
  the lower 80s both days...albeit a bit more humid Wed.
 
- Breezy, warm and humid Wed night into Thu with brief scattered
  showers possible...but the vast majority of this time will be dry. 

- Mainly dry/pleasant with lower humidity Fri into Sat with highs
  mainly in the 70s. Turning a bit more humid/warmer Sun into Mon.

&&

.DISCUSSION...

KEY MESSAGE 1...Mainly Dry/pleasant today and Wed. Highs in the
upper 70s to the lower 80s both days...albeit a bit more humid 
Wed. 

A ridge of high pressure in place will result in a beautiful day of 
weather today. A moisture starved northern stream coupled with 
diurnal heating will result in scattered clouds today...But 
still expect plenty of sunshine too. While we can not rule out
the risk for a brief spot sprinkle/light shower in the afternoon...areal
coverage and duration would be so limited it is not worth 
including in the forecast. High temps will mainly be in the 
upper 70s to the lower 80s with comfortable humidity levels too.
Low temps tonight should drop into the middle 50s to the lower 
60s with light/calm winds along with just some scattered to 
broken mid level cloudiness. 

High pressure moves off the mid-Atlantic coast by Wed. Highs will 
again be in the upper 70s to the lower 80s...but it will be a bit 
more humid as high pressure moving off the mid-Atlantic coast brings 
increasing low level moisture. We also do expect a bit of a 
southwest breeze to develop by mid to late afternoon. 

KEY MESSAGE 2...Breezy, warm, and humid Wed night into Thu with
brief scattered showers possible...but the vast majority of 
this time will be dry. 

A cold front will approach the region Wed night into early Thu. Out 
ahead of this front a modest southwest LLJ of 45-50+ knots at 950 
mb. This should be enough to result in breezy southwest wind gusts 
of 20-30 mph with a few gusts of 35-40 mph possible in the vicinity 
of the upper Cape where they are favored based on soundings and 
pattern recognition. 

As for precipitation chances...Pwats will approach 2 inches ahead of 
the cold front. However...the low level moisture is fairly shallow 
and only deepens in a narrow band along the cold front and the 
better dynamics/forcing is across northern New England. 
Therefore...only expect a brief round of scattered showers with the 
cold front and the majority of Wed night into Thu will feature dry 
weather. It will be a humid though and the gusty southwest 
winds will hold low temps into the 65-70 degree range Wed night.
Highs on Thu will be warm for this time of year...mainly in the
middle 80s but a few spots may reach the upper 80s and it will
be humid.

KEY MESSAGE 3...Mainly dry/pleasant with lower humidity Fri into Sat 
with highs mainly in the 70s. Turning a bit more humid/warmer Sun 
into Mon.

Post frontal airmass will result in beautiful weather Fri into Sat 
with lower humidity. Plenty of sunshine expected both days with 
highs mainly in the 70s along with comfortable humidity. High 
pressure overhead will allow for many locations to fall into the 40s 
to the lower 50s Fri night/Sat am...which may end up being the 
coolest night for many locations since late last spring. 

This high pressure system will shift east of the region by Sun and 
Mon. This will allow for a return southwest flow of a bit more 
humid/warmer airmass to work back into the region.

&&

.AVIATION /07Z TUESDAY THROUGH SATURDAY/...

Forecaster Confidence Levels...

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

06z TAF Update...

Today...High confidence.

VFR despite an increase in some mid level cloudiness. NW winds 
5-10 knots except sea breezes developing along portions of the 
immediate coast this afternoon.

Tonight...High confidence. 

VFR. Calm/light E winds. 

Wednesday...High confidence.

VFR. SW wind gusts of 15-25 knots developing during the afternoon. 

KBOS Terminal...High confidence in TAF.

KBDL Terminal...High confidence in TAF.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: VFR. Windy with gusts up to 35 kt. Chance
SHRA.

Thursday: VFR. Strong winds with local gusts up to 40 kt.
Chance SHRA.

Thursday Night through Friday: VFR. Breezy. 

Friday Night through Saturday: VFR. 

&&

.MARINE...

Forecaster Confidence Levels...

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

Today through Wednesday...High confidence.

High pressure in control will keep winds/seas well below small craft 
advisory criteria today and tonight. This high moves off the mid-
Atlantic coast Wed which will allow for increasing SW winds. We
expect SW wind gusts of 20-25 knots to develop by mid to late 
Wed afternoon. We should see widespread SW wind gusts of 25 to 
35 knots Wed night into Thu morning with a fairly strong LLJ 
down to 950 mb. For now will have hoisted Gale Watches for 
Buzzards and Cape Cod Bays as well as Nantucket sound...which 
tend to blow the hardest in these setups. Later shifts may need 
to expand these Gale Watches. At the very least...we will need 
small craft advisories for all waters over this time.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: Moderate risk for Small Craft Advisory winds
with gusts up to 30 kt. Local rough seas. Chance of rain
showers. 

Thursday: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Rough seas up to 9 ft. Chance of rain
showers. 

Thursday Night: Low risk for Small Craft Advisory winds with
local gusts up to 30 kt. Local rough seas. Chance of rain
showers. 

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

Friday Night through Saturday: Winds less than 25 kt. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Gale Watch from Wednesday evening through Thursday morning for 
     ANZ231>234.

&&

$$

DISCUSSION...Frank
AVIATION...Frank
MARINE...Frank

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