Lexington Weather

Current Conditions [‒] Current Conditions [+]

77.4°F Colder than last hour.

25.2°C

Warm

Partly cloudy

Today: Hi 81 °F

Tonight: Lo 59 °F

Dew Point: 50.5°F Decreased 1.7°F since last hour.

Humidity: 39%

Air Quality Index: 37

Good

(Ozone)

Barometer: 29.74 in S

1007 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Tuesday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 2 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Wed Jun 17, 2026 4:59am EDT

Overview:

- High astronomical tides with less than a foot of storm surge could cause minor coastal flooding for the late evening high tide.

- Mostly dry today. There is a chance for scattered pop-up showers and thunderstorms across western/central New England.

- Gusty southerly winds with some showers and perhaps a few afternoon thunderstorms Thursday. Watching the severe weather potential too, but right now thinking main threat will be to our west and south.

- Beautiful stretch of weather Friday into this weekend. Comfortable humidity this entire period.

- Perhaps a period of much needed rain to kick off the start of the next work week.

Today:

Mostly Sunny

Hi 81 °F

Mostly sunny, with a high near 81. South wind 5 to 8 mph.

Tonight:

Partly Cloudy then Slight Chance Rain Showers

Lo 59 °F

A slight chance of rain showers after 5am. Partly cloudy, with a low around 59. South wind 5 to 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Thursday:

Showers And T-Storms

Hi 79 °F

Rain showers likely before 2pm, then showers and thunderstorms. Mostly cloudy, with a high near 79. South wind 6 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night:

Chance Showers And T-Storms then Partly Cloudy

Lo 63 °F

Thursday Night: Chance Showers And Thunderstorms then Partly Cloudy

A chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 63. Southwest wind 8 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Juneteenth:

Sunny

Hi 83 °F

Sunny, with a high near 83. West wind 9 to 14 mph, with gusts as high as 26 mph.

Friday Night:

Clear

Lo 61 °F

Clear, with a low around 61. West wind around 13 mph, with gusts as high as 24 mph.

Saturday:

Sunny

Hi 80 °F

Sunny, with a high near 80. West wind around 14 mph, with gusts as high as 26 mph.

Saturday Night:

Mostly Clear

Lo 60 °F

Mostly clear, with a low around 60. West wind 8 to 13 mph, with gusts as high as 24 mph.

Sunday:

Sunny then Slight Chance Rain Showers

Hi 81 °F

A slight chance of rain showers after 3pm. Sunny, with a high near 81. Northwest wind around 10 mph.

Sunday Night:

Slight Chance Rain Showers

Lo 60 °F

A slight chance of rain showers. Partly cloudy, with a low around 60. West wind 2 to 8 mph.

Monday:

Rain Showers Likely

Hi 75 °F

Rain showers likely. Partly sunny, with a high near 75. Southeast wind 2 to 8 mph. Chance of precipitation is 60%.

Monday Night:

Rain Showers Likely

Lo 60 °F

Rain showers likely. Mostly cloudy, with a low around 60. North wind around 7 mph. Chance of precipitation is 60%.

Tuesday:

Chance Rain Showers

Hi 79 °F

A chance of rain showers. Mostly sunny, with a high near 79. North wind 5 to 8 mph. Chance of precipitation is 30%.

Tuesday Night:

Slight Chance Rain Showers then Partly Cloudy

Lo 61 °F

A slight chance of rain showers before 8pm. Partly cloudy, with a low around 61. South wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 1pm through Fri 12am

Issued by:
National Weather Service Boston / Norton, MA
Updated Wed Jun 17, 2026 4:59am EDT

1:00pm

Mostly Sunny

78°F
Dew Pt 49°F
Wind from S

S 6 mph
Precip: 0%

2:00pm

Mostly Sunny

79°F
Dew Pt 49°F
Wind from S

S 7 mph
Precip: 1%

3:00pm

Mostly Sunny

79°F
Dew Pt 50°F
Wind from S

S 7 mph
Precip: 1%

4:00pm

Mostly Sunny

78°F
Dew Pt 50°F
Wind from S

S 8 mph
Precip: 1%

5:00pm

Mostly Sunny

78°F
Dew Pt 51°F
Wind from S

S 8 mph
Precip: 2%

6:00pm

Partly Cloudy

76°F
Dew Pt 51°F
Wind from S

S 8 mph
Precip: 2%

7:00pm

Partly Cloudy

75°F
Dew Pt 50°F
Wind from S

S 8 mph
Precip: 2%

8:00pm

Partly Cloudy

72°F
Dew Pt 51°F
Wind from S

S 7 mph
Precip: 2%

9:00pm

Mostly Clear

70°F
Dew Pt 51°F
Wind from S

S 7 mph
Precip: 1%

10:00pm

Mostly Clear

68°F
Dew Pt 51°F
Wind from S

S 6 mph
Precip: 2%

11:00pm

Partly Cloudy

67°F
Dew Pt 51°F
Wind from S

S 6 mph
Precip: 1%

Thu
12:00am

Mostly Cloudy

65°F
Dew Pt 52°F
Wind from S

S 5 mph
Precip: 2%

Thu
1:00am

Mostly Cloudy

64°F
Dew Pt 52°F
Wind from S

S 5 mph
Precip: 3%

Thu
2:00am

Mostly Cloudy

63°F
Dew Pt 53°F
Wind from S

S 5 mph
Precip: 4%

Thu
3:00am

Mostly Cloudy

62°F
Dew Pt 54°F
Wind from S

S 5 mph
Precip: 7%

Thu
4:00am

Mostly Cloudy

61°F
Dew Pt 55°F
Wind from S

S 5 mph
Precip: 12%

Thu
5:00am

Slight Chance Rain Showers

61°F
Dew Pt 55°F
Wind from S

S 5 mph
Precip: 18%
Rain: 0.01 in

Thu
6:00am

Chance Rain Showers

61°F
Dew Pt 56°F
Wind from S

S 6 mph
Precip: 26%
Rain: 0.01 in

Thu
7:00am

Chance Rain Showers

62°F
Dew Pt 58°F
Wind from S

S 7 mph
Precip: 30%
Rain: 0.01 in

Thu
8:00am

Chance Rain Showers

64°F
Dew Pt 59°F
Wind from SE

SE 7 mph
Precip: 50%
Rain: 0.01 in

Thu
9:00am

Chance Rain Showers

66°F
Dew Pt 61°F
Wind from SE

SE 9 mph
Precip: 53%
Rain: 0.01 in

Thu
10:00am

Rain Showers Likely

68°F
Dew Pt 62°F
Wind from S

S 12 mph
Precip: 69%
Rain: 0.01 in

Thu
11:00am

Rain Showers Likely

69°F
Dew Pt 63°F
Wind from SE

SE 13 mph
Precip: 66%
Rain: 0.01 in

Thu
12:00pm

Rain Showers Likely

71°F
Dew Pt 65°F
Wind from S

S 14 mph
Precip: 62%
Rain: 0.01 in

Thu
1:00pm

Rain Showers Likely

72°F
Dew Pt 66°F
Wind from S

S 15 mph
Precip: 65%
Rain: 0.01 in

Thu
2:00pm

Showers And Thunderstorms Likely

74°F
Dew Pt 67°F
Wind from S

S 15 mph
Precip: 66%
Rain: 0.05 in

Thu
3:00pm

Showers And Thunderstorms Likely

75°F
Dew Pt 68°F
Wind from S

S 15 mph
Precip: 69%
Rain: 0.05 in

Thu
4:00pm

Showers And Thunderstorms

76°F
Dew Pt 69°F
Wind from S

S 15 mph
Precip: 76%
Rain: 0.05 in

Thu
5:00pm

Chance Showers And Thunderstorms

76°F
Dew Pt 70°F
Wind from S

S 15 mph
Precip: 49%
Rain: 0.04 in

Thu
6:00pm

Chance Showers And Thunderstorms

76°F
Dew Pt 67°F
Wind from S

S 14 mph
Precip: 36%
Rain: 0.02 in

Thu
7:00pm

Chance Showers And Thunderstorms

76°F
Dew Pt 66°F
Wind from SW

SW 13 mph
Precip: 30%
Rain: 0.02 in

Thu
8:00pm

Slight Chance Rain Showers

74°F
Dew Pt 68°F
Wind from SW

SW 10 mph
Precip: 13%

Thu
9:00pm

Slight Chance Rain Showers

72°F
Dew Pt 67°F
Wind from SW

SW 9 mph
Precip: 18%

Thu
10:00pm

Partly Cloudy

72°F
Dew Pt 66°F
Wind from SW

SW 8 mph
Precip: 13%

Thu
11:00pm

Partly Cloudy

71°F
Dew Pt 65°F
Wind from SW

SW 8 mph
Precip: 7%

Fri
12:00am

Partly Cloudy

71°F
Dew Pt 64°F
Wind from W

W 8 mph
Precip: 5%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 171115
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
715 AM EDT Wed Jun 17 2026

.WHAT HAS CHANGED...
No significant changes to the forecast.

&&

.KEY MESSAGES...

- High astronomical tides with less than a foot of storm surge
  could cause minor coastal flooding for the late evening high
  tide.

- Mostly dry today. There is a chance for scattered pop-up
  showers and thunderstorms across western/central New England.  

- Gusty southerly winds with some showers and perhaps a few
  afternoon thunderstorms Thursday. Watching the severe weather
  potential too, but right now thinking main threat will be to
  our west and south.

- Beautiful stretch of weather Friday into this weekend.
  Comfortable humidity this entire period. 

- Perhaps a period of much needed rain to kick off the start of
  the next work week.

&&

.DISCUSSION...
KEY MESSAGE 1...High astronomical tides with less than a foot of
storm surge could cause minor coastal flooding for the late
evening high tide.

Astronomical tides continue to very slowly come down, lessening
the coastal flooding/splashover risk with each day. Not enough
confidence to continue Coastal Flood Statements at this time.
That said, still have concerns for low lying areas around 
Boston and Nantucket with the late evening high tide.

KEY MESSAGE 2...Mostly dry today. There is a chance for 
scattered pop-up showers and thunderstorms across western and 
central New England.

Expecting another mostly dry day today. Confidence has waned in
seeing some showers across western MA and CT this afternoon, but
there remains a small probability as a low pressure moves into
the Great Lakes and upstate NY towards this evening. Surface dew
points should climb into the 50s by this evening, which is not
especially supporting of thunderstorms. The air is just a 
little too dry. Now thinking that another low pressure will be
too far southeast to bring showers to the Cape and islands this
morning.

KEY MESSAGE 3...Gusty southerly winds with some showers and
perhaps a few afternoon thunderstorms Thursday. Watching the
severe weather potential too, but right now thinking main 
threat will be to our west and south.

More active weather anticipated for Thursday. Some details
remain to be worked out. Thinking the most significant feature
will be a potent 40-60kt SW low level jet at 925 mb. This could
interact with a warm front in the morning to generate more
widespread showers. There is a low risk for elevated
thunderstorms as well.

One big question will be if southern New England can get more
fully into the warm sector of a low pressure. If we do wind up
in the warm sector, then the potential for strong to severe
thunderstorms in the afternoon and evening goes up. Current
thinking is the severe weather window for our region is narrow.
SPC has our region within a level 2 of 5 risk, mainly due to 
the threat of gusty winds if we can generate enough instability
to pair with the potent low level jet. This will need to be
fine-tuned with later forecasts.

Have rather high confidence in at least some light rainfall, 
which we could use given our recent dry conditions. 

KEY MESSAGE 4...Beautiful stretch of weather Friday into this
weekend. Comfortable humidity this entire period. 

Two closed upper level lows just south of Hudsons Bay will
result in height fields lower than normal Friday into this
weekend across the Northeast. This will suppress deeper moisture 
to our south and result in a beautiful stretch of dry weather. 
High temperatures will generally be between 75 and 85 with 
comfortable humidity. Overnight low temperatures will mainly be 
in the 50s to the lower 60s. 

KEY MESSAGE 5...Perhaps a period of much needed rain to kick off
the start of the next work week.

Quite a bit of uncertainty for the start of the next work week.
Still seeing signs in the guidance for a low pressure to perhaps
pass by our region sometime Monday into Tuesday. This could lead
to some much needed rainfall. While confidence is above average
for at least some light rainfall, overall confidence in the 
details is below normal being several days into the future.

&&

.AVIATION /12Z WEDNESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...

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

Today...High Confidence. 

VFR despite mid level cloudiness. Winds becoming S at 5-10 knots
except localized sea breezes developing along portions of the
immediate coast. A few afternoon/evening spot showers possible
across the distant interior. Otherwise, dry weather continues.

Tonight...High Confidence.

VFR during the evening with some MVFR to localized IFR
conditions developing toward daybreak across parts of the
interior and areas near the south coast. Scattered showers may
also develop toward morning with the focus across interior MA.
Winds becoming SE at 5 to 10 knots late. 

Thursday...Moderate confidence.

Areas MVFR/IFR in stratus towards the Berkshires and south
coast becoming more widespread during the day. SHRA with a
risk for -TSRA. Gusty SW winds with LLWS also possible towards
the Cape and islands.

KBOS Terminal...High confidence in TAF. Sea breeze develops
around 14z and continues through much of the day. 
 
KBDL Terminal...High confidence in TAF.

Outlook /Thursday Night through Sunday/...

Thursday Night through Friday Night: VFR. Breezy. 

Saturday: VFR. Windy with local gusts up to 30 kt. 

Saturday Night: VFR. Breezy. 

Sunday: VFR. Breezy. Slight chance SHRA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Thursday: High confidence. 

Winds and seas to remain below Small Craft Advisory thresholds
through tonight. Gusty southwest winds expected Thursday. Much
will depend on how warm we can get. Have high confidence in at
least Small Craft Advisory conditions, with moderate confidence
for gale force gusts across some of the eastern coastal waters.
Gale Watches posted for those waters instead.

Outlook /Thursday Night through Sunday/...

Thursday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Rough seas up to 8 ft. Slight chance of rain
showers. 

Juneteenth: Low risk for Small Craft Advisory winds with gusts
up to 25 kt. Rough seas up to 7 ft. 

Friday Night through Saturday: Low risk for Small Craft
Advisory winds with gusts up to 25 kt. Seas up to 5 ft. 

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

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

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 11 AM to 7 PM EDT Thursday for 
     ANZ230-236-251.
     Gale Watch from Thursday morning through Thursday evening for 
     ANZ231-234.
     Small Craft Advisory from 11 AM Thursday to 1 AM EDT Friday 
     for ANZ232-233.
     Small Craft Advisory from 11 AM Thursday to 8 PM EDT Friday 
     for ANZ235-237-255-256.
     Gale Watch from Thursday morning through Thursday evening for 
     ANZ250-280.
     Small Craft Advisory from 2 PM Thursday to 8 PM EDT Friday for 
     ANZ254.

&&

$$

DISCUSSION...Belk/Frank
AVIATION...Belk/FT
MARINE...Belk/Frank

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