Lexington Weather

Current Conditions [‒] Current Conditions [+]

70.0°F Colder than last hour.

21.1°C

Muggy

Light rain, Overcast

Overnight: Lo 70 °F

Thursday: Hi 87 °F

Dew Point: 66.9°F Increased 0.2°F since last hour .

Humidity: 90% Increased 3.0% since last hour.

Air Quality Index: 32

Good

(Ozone)

Barometer: 29.73 in S

1007 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.03 in

Rain Wednesday: 0.03 in

Visibility: 10 miles

Wind:

Now: 3 mph

Avg: 3 mph

Gusts: 12 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 Sep 10, 2026 1:56am EDT

Overview:

- Scattered early morning showers quickly give way to plenty of sunshine, breezy and unseasonable warm high temps well into the 80s today.

- Plenty of sunshine with comfortable humidity Fri-Sat. Highs mainly in the 70s. Lows Fri night in the 40s-lower 50s.

- Period of showers likely sometime late Sat night into Sun with perhaps some downpours. Dry & seasonable weather follows Mon.

- Unseasonable warmth may return for a day or two by the middle of next week ahead of our next cold front.

Overnight:

Rain Showers Likely

Lo 70 °F

Rain showers likely. Mostly cloudy, with a low around 70. Southwest wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

Thursday:

Chance Rain Showers then Mostly Sunny

Hi 87 °F

A chance of rain showers before 8am. Mostly sunny, with a high near 87. West wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Thursday Night:

Partly Cloudy

Lo 54 °F

Partly cloudy, with a low around 54. West wind 5 to 15 mph.

Friday:

Sunny

Hi 75 °F

Sunny, with a high near 75. Northwest wind 6 to 12 mph.

Friday Night:

Clear

Lo 49 °F

Clear, with a low around 49. Northwest wind 1 to 8 mph.

Saturday:

Sunny

Hi 77 °F

Sunny, with a high near 77. East wind 2 to 7 mph.

Saturday Night:

Mostly Cloudy then Chance Rain Showers

Lo 63 °F

A chance of rain showers after 2am. Mostly cloudy, with a low around 63. South wind around 7 mph. Chance of precipitation is 30%.

Sunday:

Chance Rain Showers

Hi 77 °F

A chance of rain showers before 5pm. Mostly cloudy, with a high near 77. Southwest wind 5 to 8 mph. Chance of precipitation is 50%.

Sunday Night:

Partly Cloudy

Lo 60 °F

Partly cloudy, with a low around 60. West wind around 6 mph.

Monday:

Mostly Sunny

Hi 77 °F

Mostly sunny, with a high near 77. Northwest wind around 8 mph.

Monday Night:

Partly Cloudy

Lo 56 °F

Partly cloudy, with a low around 56. North wind around 6 mph.

Tuesday:

Sunny

Hi 77 °F

Sunny, with a high near 77. Southeast wind 3 to 10 mph.

Tuesday Night:

Partly Cloudy

Lo 60 °F

Partly cloudy, with a low around 60. Southwest wind around 10 mph.

Wednesday:

Mostly Sunny then Chance Rain Showers

Hi 81 °F

A chance of rain showers after 1pm. Mostly sunny, with a high near 81. West wind around 8 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 5am through Fri 4pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu Sep 10, 2026 1:56am EDT

5:00am

Rain Showers Likely

72°F
Dew Pt 67°F
Wind from SW

SW 15 mph
Precip: 66%
Rain: 0.01 in

6:00am

Chance Rain Showers

72°F
Dew Pt 67°F
Wind from SW

SW 15 mph
Precip: 48%
Rain: 0.01 in

7:00am

Chance Rain Showers

72°F
Dew Pt 66°F
Wind from SW

SW 14 mph
Precip: 31%

8:00am

Partly Sunny

72°F
Dew Pt 66°F
Wind from SW

SW 14 mph
Precip: 13%

9:00am

Mostly Sunny

75°F
Dew Pt 66°F
Wind from W

W 14 mph
Precip: 9%

10:00am

Mostly Sunny

79°F
Dew Pt 66°F
Wind from W

W 14 mph
Precip: 4%

11:00am

Mostly Sunny

82°F
Dew Pt 67°F
Heat Index: 85°F
Wind from W

W 14 mph
Precip: 0%

12:00pm

Mostly Sunny

85°F
Dew Pt 65°F
Heat Index: 87°F
Wind from W

W 15 mph
Precip: 0%

1:00pm

Mostly Sunny

86°F
Dew Pt 64°F
Heat Index: 87°F
Wind from W

W 16 mph
Precip: 0%

2:00pm

Sunny

87°F
Dew Pt 63°F
Heat Index: 88°F
Wind from W

W 17 mph
Precip: 0%

3:00pm

Sunny

87°F
Dew Pt 61°F
Wind from W

W 17 mph
Precip: 0%

4:00pm

Sunny

86°F
Dew Pt 60°F
Wind from W

W 17 mph
Precip: 0%

5:00pm

Sunny

84°F
Dew Pt 59°F
Wind from W

W 16 mph
Precip: 0%

6:00pm

Mostly Clear

81°F
Dew Pt 58°F
Wind from W

W 15 mph
Precip: 0%

7:00pm

Mostly Clear

77°F
Dew Pt 57°F
Wind from W

W 13 mph
Precip: 1%

8:00pm

Partly Cloudy

74°F
Dew Pt 56°F
Wind from W

W 10 mph
Precip: 1%

9:00pm

Partly Cloudy

71°F
Dew Pt 55°F
Wind from W

W 9 mph
Precip: 1%

10:00pm

Partly Cloudy

69°F
Dew Pt 53°F
Wind from W

W 7 mph
Precip: 1%

11:00pm

Partly Cloudy

67°F
Dew Pt 52°F
Wind from W

W 6 mph
Precip: 1%

Fri
12:00am

Partly Cloudy

65°F
Dew Pt 51°F
Wind from W

W 6 mph
Precip: 1%

Fri
1:00am

Partly Cloudy

64°F
Dew Pt 50°F
Wind from W

W 6 mph
Precip: 1%

Fri
2:00am

Partly Cloudy

62°F
Dew Pt 50°F
Wind from W

W 6 mph
Precip: 1%

Fri
3:00am

Partly Cloudy

60°F
Dew Pt 49°F
Wind from NW

NW 6 mph
Precip: 1%

Fri
4:00am

Partly Cloudy

58°F
Dew Pt 48°F
Wind from NW

NW 5 mph
Precip: 0%

Fri
5:00am

Partly Cloudy

56°F
Dew Pt 47°F
Wind from NW

NW 5 mph
Precip: 0%

Fri
6:00am

Sunny

56°F
Dew Pt 47°F
Wind from NW

NW 6 mph
Precip: 0%

Fri
7:00am

Sunny

56°F
Dew Pt 47°F
Wind from NW

NW 7 mph
Precip: 0%

Fri
8:00am

Sunny

58°F
Dew Pt 47°F
Wind from NW

NW 8 mph
Precip: 0%

Fri
9:00am

Sunny

60°F
Dew Pt 46°F
Wind from NW

NW 9 mph
Precip: 0%

Fri
10:00am

Sunny

64°F
Dew Pt 46°F
Wind from NW

NW 10 mph
Precip: 0%

Fri
11:00am

Sunny

67°F
Dew Pt 45°F
Wind from NW

NW 12 mph
Precip: 0%

Fri
12:00pm

Sunny

70°F
Dew Pt 44°F
Wind from NW

NW 12 mph
Precip: 0%

Fri
1:00pm

Sunny

72°F
Dew Pt 44°F
Wind from W

W 12 mph
Precip: 0%

Fri
2:00pm

Sunny

74°F
Dew Pt 43°F
Wind from W

W 12 mph
Precip: 0%

Fri
3:00pm

Sunny

75°F
Dew Pt 43°F
Wind from W

W 12 mph
Precip: 0%

Fri
4:00pm

Sunny

75°F
Dew Pt 42°F
Wind from W

W 10 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 100734
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
334 AM EDT Thu Sep 10 2026

.WHAT HAS CHANGED...

No significant changes to the forecast.

&&

.KEY MESSAGES...

- Scattered early morning showers quickly give way to plenty 
  of sunshine, breezy and unseasonable warm high temps well 
  into the 80s today.

- Plenty of sunshine with comfortable humidity Fri-Sat. Highs 
  mainly in the 70s. Lows Fri night in the 40s-lower 50s.

- Period of showers likely sometime late Sat night into Sun with
  perhaps some downpours. Dry & seasonable weather follows Mon. 

- Unseasonable warmth may return for a day or two by the middle
  of next week ahead of our next cold front.

&&

.DISCUSSION...

KEY MESSAGE 1...Scattered early morning showers quickly give way to 
plenty of sunshine, breezy and unseasonable warm high temps well 
into the 80s today.

Scattered showers early this morning will quickly exit the coastal 
plain by early-mid morning. Otherwise...westerly flow aloft and at 
the surface will allow skies to become mostly sunny by late morning-
early afternoon. Post frontal airmass still quite warm with 925T on 
the order of +22C to +24C. This coupled with lots of sunshine and 
westerly flow should allow highs to reach the middle 80s in many 
locations with even a few upper 80s possible. Bufkit soundings also 
indicate good mixing...so expect westerly wind gusts on the order of 
20 to 30 mph with a few gusts near 35 mph across parts MA especially 
the higher terrain. 

KEY MESSAGE 2...Plenty of sunshine with comfortable humidity Fri-
Sat. Highs mainly in the 70s. Lows Fri night in the 40s-lower 50s. 

Large high pressure builds in from the west Fri into Sat. This will 
result in absolutely beautiful September weather. Plenty of sunshine 
with highs mainly in the middle to upper 70s both days with very 
comfortable humidity. Mainly clear skies, light winds, and a dry 
airmass in place will allow for a good night of radiational cooling 
Friday night. Lows Fri night should mainly be in the 40s to the 
lower 50s and 55-60 in the Urban Heat Island of Boston. 

KEY MESSAGE 3...Period of showers likely sometime late Sat night 
into Sun with perhaps some downpours. Dry & seasonable weather 
follows Mon. 

High pressure moves off the coast for the second half of the weekend 
allowing a shortwave and associated mid-level warm front to 
approach. This will likely bring a period of showers sometime late 
Sat night and/or Sun. Pwats reach around 2 inches so some downpours 
are possible too...especially if there is a low level boundary in 
place. Some of the guidance indicates this potential near and south 
of the MA Turnpike...so something to watch over the next few days. 

A ridge of high pressure should return by Monday...bringing mainly 
dry and seasonable weather for the start of the next work week. 

KEY MESSAGE 4...Unseasonable warmth may return for a day or two by 
the middle of next week ahead of our next cold front.

An anomalous upper level ridge of high ridge will build across the 
southeast states during the first half of next week. This will 
result in west to southwest flow aloft and above normal height 
fields across southern New England. We will have to see how much 
southwest flow/mixing we can generate at the surface ahead of the 
next cold front. But given the setup...there is the potential for 
highs to reach back into the 80s for a day or two by the middle of 
next week ahead of the next cold front.

&&

.AVIATION /07Z THURSDAY THROUGH MONDAY/...

Forecaster Confidence Levels...

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

06z TAF Update...

Today...High confidence.

Mainly VFR but some brief MVFR conditions are possible through early-
mid morning associated with brief scattered showers. Otherwise...SW 
wind gusts of 20 to 30 knots early this morning will shift to more 
of a W direction later this morning and afternoon. Brief gusts 
up to 35 knots this morning towards the south coast and Cape 
Cod. 

Tonight...High confidence.

VFR. Diminishing NW winds which should decouple in the normal low-
lying locations overnight. 

Friday...High confidence. 

VFR. NW winds 6-12 knots. 

KBOS Terminal...High confidence in TAF. 

KBDL Terminal...High confidence in TAF.

Outlook /Friday Night through Monday/...

Friday Night through Saturday: VFR. 

Saturday Night: Mainly VFR, with local MVFR possible. Scattered
SHRA.

Sunday: Mainly VFR, with local IFR possible. Scattered 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.

Today through Thursday...High confidence.

Southwest winds were gusting to between 25 and 35 knots early this 
morning. The strongest of those wind gusts were the typically prone 
areas of near Buzzards/Cape Cod Bay as well and Nantucket sound. 
Buoys indicating SW winds gusting to around 35 knots in those 
spots...so Gale Warnings continue there this morning. 
Otherwise...WSW wind gusts of 20-30 knots expected later this 
morning and afternoon across all waters. Strongest of those will
be nearshore...but small craft headlines will remain in effect 
for the rest of our waters through the afternoon. 

Winds diminish below small craft advisory thresholds by early-mid 
evening...But will keep SCA headlines for our southern outer-waters 
into the overnight hours for lingering 5 foot swell. 
Otherwise...winds/seas should drop below small craft advisory 
thresholds for all waters shortly after midnight and persist into 
Friday. This a result of high pressure building in from the west.

Outlook /Friday Night through Monday/...

Friday Night through Saturday: Winds less than 25 kt. 

Saturday Night: Winds less than 25 kt. Isolated rain showers. 

Sunday: Winds less than 25 kt. Scattered rain showers. 

Sunday Night: Winds less than 25 kt. Seas locally approaching
5 ft. Slight chance of rain showers. 

Monday: Winds less than 25 kt. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ230-
     235>237-250-251.
     Gale Warning until noon EDT today for ANZ231>234.
     Small Craft Advisory until 2 AM EDT Friday for ANZ254>256.

&&

$$

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

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