Lexington Weather

Current Conditions [‒] Current Conditions [+]

86.7°F Warmer than last hour.

30.4°C

Hot

Clear

Today: Hi 91 °F

Tonight: Lo 56 °F

Dew Point: 54.1°F Decreased 1.7°F since last hour.

Humidity: 33% Decreased 4.0% since last hour.

Air Quality Index: 39

Good

(Ozone)

Barometer: 29.98 in Falling 0.04 inHg/hr

1015 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Wednesday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 1 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Today, Tonight, & Friday through Wednesday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu Jun 4, 2026 6:20am EDT

Overview:

- Quiet and dry stretch of weather through Saturday, with unseasonably warm temperatures.

- Showery activity becomes more likely late Saturday into Sunday with a frontal passage.

- Drier and cooler conditions early next week.

Today:

Sunny

Hi 91 °F

Sunny, with a high near 91. Southwest wind 6 to 13 mph.

Tonight:

Mostly Clear

Lo 56 °F

Mostly clear, with a low around 56. West wind 3 to 12 mph.

Friday:

Mostly Sunny

Hi 90 °F

Mostly sunny, with a high near 90. West wind around 7 mph.

Friday Night:

Partly Cloudy

Lo 66 °F

Partly cloudy, with a low around 66. Southwest wind around 6 mph.

Saturday:

Partly Sunny then Slight Chance Showers And T-Storms

Hi 90 °F

Saturday: Partly Sunny then Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 90. Southwest wind 3 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

Saturday Night:

Slight Chance Showers And T-Storms then Chance Showers And T-Storms

Lo 66 °F

Saturday Night: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Southwest wind 6 to 10 mph. Chance of precipitation is 50%.

Sunday:

Showers And T-Storms

Hi 78 °F

A chance of rain showers before 8am, then showers and thunderstorms. Mostly cloudy, with a high near 78. Northwest wind 6 to 10 mph. Chance of precipitation is 80%.

Sunday Night:

Showers And T-Storms Likely

Lo 54 °F

Sunday Night: Showers And Thunderstorms Likely

Showers and thunderstorms likely. Mostly cloudy, with a low around 54. Northeast wind around 9 mph. Chance of precipitation is 70%.

Monday:

Slight Chance Rain Showers then Mostly Sunny

Hi 69 °F

A slight chance of rain showers before 7am. Mostly sunny, with a high near 69. Northeast wind around 10 mph.

Monday Night:

Partly Cloudy

Lo 54 °F

Partly cloudy, with a low around 54. Southeast wind 3 to 7 mph.

Tuesday:

Mostly Sunny

Hi 76 °F

Mostly sunny, with a high near 76. Northeast wind 3 to 8 mph.

Tuesday Night:

Partly Cloudy

Lo 58 °F

Partly cloudy, with a low around 58. Southwest wind around 6 mph.

Wednesday:

Mostly Sunny

Hi 85 °F

Mostly sunny, with a high near 85. North wind 3 to 7 mph.

Wednesday Night:

Partly Cloudy

Lo 64 °F

Partly cloudy, with a low around 64. Southwest wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 1pm through Sat 12am

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu Jun 4, 2026 6:20am EDT

1:00pm

Sunny

88°F
Dew Pt 50°F
Wind from SW

SW 10 mph
Precip: 0%

2:00pm

Sunny

89°F
Dew Pt 50°F
Wind from SW

SW 13 mph
Precip: 0%

3:00pm

Sunny

90°F
Dew Pt 50°F
Wind from SW

SW 13 mph
Precip: 0%

4:00pm

Sunny

91°F
Dew Pt 50°F
Wind from SW

SW 13 mph
Precip: 0%

5:00pm

Partly Sunny

90°F
Dew Pt 50°F
Wind from SW

SW 13 mph
Precip: 0%

6:00pm

Mostly Clear

88°F
Dew Pt 51°F
Wind from SW

SW 12 mph
Precip: 0%

7:00pm

Partly Cloudy

84°F
Dew Pt 53°F
Wind from SW

SW 10 mph
Precip: 0%

8:00pm

Mostly Clear

79°F
Dew Pt 54°F
Wind from SW

SW 8 mph
Precip: 0%

9:00pm

Mostly Clear

74°F
Dew Pt 53°F
Wind from SW

SW 8 mph
Precip: 0%

10:00pm

Mostly Clear

70°F
Dew Pt 53°F
Wind from SW

SW 7 mph
Precip: 0%

11:00pm

Mostly Clear

66°F
Dew Pt 53°F
Wind from SW

SW 6 mph
Precip: 0%

Fri
12:00am

Mostly Clear

64°F
Dew Pt 52°F
Wind from SW

SW 6 mph
Precip: 0%

Fri
1:00am

Mostly Clear

62°F
Dew Pt 52°F
Wind from SW

SW 5 mph
Precip: 0%

Fri
2:00am

Mostly Clear

60°F
Dew Pt 51°F
Wind from SW

SW 3 mph
Precip: 0%

Fri
3:00am

Mostly Clear

58°F
Dew Pt 51°F
Wind from W

W 3 mph
Precip: 0%

Fri
4:00am

Mostly Clear

56°F
Dew Pt 51°F
Wind from W

W 3 mph
Precip: 0%

Fri
5:00am

Mostly Clear

56°F
Dew Pt 51°F
Wind from W

W 3 mph
Precip: 0%

Fri
6:00am

Sunny

58°F
Dew Pt 52°F
Wind from W

W 5 mph
Precip: 0%

Fri
7:00am

Mostly Sunny

61°F
Dew Pt 53°F
Wind from W

W 6 mph
Precip: 0%

Fri
8:00am

Mostly Sunny

66°F
Dew Pt 54°F
Wind from W

W 6 mph
Precip: 0%

Fri
9:00am

Mostly Sunny

71°F
Dew Pt 54°F
Wind from W

W 7 mph
Precip: 0%

Fri
10:00am

Mostly Sunny

77°F
Dew Pt 52°F
Wind from W

W 7 mph
Precip: 0%

Fri
11:00am

Mostly Sunny

82°F
Dew Pt 52°F
Wind from W

W 7 mph
Precip: 0%

Fri
12:00pm

Mostly Sunny

85°F
Dew Pt 51°F
Wind from W

W 7 mph
Precip: 0%

Fri
1:00pm

Mostly Sunny

87°F
Dew Pt 51°F
Wind from W

W 6 mph
Precip: 0%

Fri
2:00pm

Mostly Sunny

88°F
Dew Pt 51°F
Wind from W

W 6 mph
Precip: 0%

Fri
3:00pm

Mostly Sunny

89°F
Dew Pt 52°F
Wind from W

W 6 mph
Precip: 0%

Fri
4:00pm

Mostly Sunny

90°F
Dew Pt 52°F
Wind from SW

SW 7 mph
Precip: 0%

Fri
5:00pm

Mostly Sunny

89°F
Dew Pt 52°F
Wind from SW

SW 7 mph
Precip: 0%

Fri
6:00pm

Partly Cloudy

87°F
Dew Pt 53°F
Wind from SW

SW 6 mph
Precip: 0%

Fri
7:00pm

Partly Cloudy

84°F
Dew Pt 55°F
Wind from SW

SW 3 mph
Precip: 0%

Fri
8:00pm

Mostly Clear

81°F
Dew Pt 54°F
Wind from W

W 3 mph
Precip: 0%

Fri
9:00pm

Mostly Clear

75°F
Dew Pt 55°F
Wind from W

W 3 mph
Precip: 0%

Fri
10:00pm

Partly Cloudy

73°F
Dew Pt 55°F
Wind from W

W 3 mph
Precip: 0%

Fri
11:00pm

Partly Cloudy

72°F
Dew Pt 54°F
Wind from SW

SW 3 mph
Precip: 0%

Sat
12:00am

Partly Cloudy

70°F
Dew Pt 54°F
Wind from SW

SW 3 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 041050
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
650 AM EDT Thu Jun 4 2026

.WHAT HAS CHANGED...

While no significant changes were made to the forecast, continue
to refine summery temperatures and timing of precipitation for 
this coming weekend.

&&

.KEY MESSAGES...

- Quiet and dry stretch of weather through Saturday, with
  unseasonably warm temperatures.

- Showery activity becomes more likely late Saturday into Sunday
  with a frontal passage.

- Drier and cooler conditions early next week.

&&

.DISCUSSION...
KEY MESSAGE 1...Quiet and dry stretch of weather through Saturday, 
with unseasonably warm temperatures.

Confidence remains high in dry and unseasonably warm weather through 
the daylight hours Saturday as surface high pressure shifts from the 
Great Lakes toward the southeastern CONUS while mid-level ridging 
settles across the Northeast. Temperatures aloft continue to warm, 
with 850 mb temperatures rising to around +13C to +15C today and 
Friday, then +15C to +18C Saturday. Highs today should top out in 
the 80s for most, with the greatest potential for 90 degree 
temperatures across the Connecticut River and Merrimack Valleys 
where downsloping and deeper mixing are maximized. Friday and 
Saturday are expected to be the warmest days, with highs in the 
upper 80s to lower 90s becoming more widespread away from the 
immediate coast, where onshore flow should still provide some 
moderation. NBM probabilities continue to indicate a 70 to 80 
percent chance of exceeding 90 degrees across the Connecticut River 
and Merrimack Valleys Friday afternoon, while much of the coastal 
plain away from the shoreline has a 50 to 60 percent chance. One 
caveat Saturday will be increasing cloud cover and a low risk for a 
late-day shower, mainly northwest of the I-91 corridor.

KEY MESSAGE 2...Showery activity becomes more likely late Saturday 
into Sunday with a frontal passage.

Confidence continues to increase that most, if not all, of the 
daylight hours Saturday remain dry, though a brief afternoon shower 
cannot be ruled out northwest of the I-91 corridor as a front 
approaches from northern New England. Given summerlike warmth and 
modest humidity (dewpoints near 60F), a limited risk for an isolated 
thunderstorm with locally heavy downpours exists Saturday afternoon, 
though confidence remains low and any activity should remain 
isolated.

By Sunday, a more defined mid-level trough and associated shortwave 
energy become established over southern New England, supporting a 
better signal for scattered showers as weak surface low pressure 
develops along a weakening frontal boundary. Temperatures trend 
notably cooler, generally 10 to 15 degrees lower than Saturday, 
though exact values will depend on frontal timing. Eastern areas may 
cool more quickly with northeasterly flow off the Gulf of Maine, 
while interior locations such as Springfield and Hartford could 
remain relatively warmer.

KEY MESSAGE 3...Drier and cooler conditions early next week.

Conditions trend drier Monday into Tuesday as the weekend system 
gradually shifts east of New England. Some uncertainty remains 
regarding how quickly lingering troughing departs, which will 
influence temperatures and cloud cover early next week. For now, 
expect cooler conditions Monday with a gradual warming and drying 
trend by Tuesday.

&&

.AVIATION /12Z THURSDAY THROUGH MONDAY/...

Forecaster Confidence Levels...

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

12z TAF Update...

Today through Friday...High confidence.

VFR conditions continue through Friday. A brief sea breeze along
the eastern MA coast can not be ruled out for a few hours around
midday...But a better chance exists Friday. Otherwise...SW winds
may gust on the order of 15-20+ knots this afternoon and 20-25 
knots towards the south coast and Cape.

KBOS...High confidence in TAF. Only uncertainty remains 
if a brief sea breeze occurs later this morning into early 
afternoon before SW gradient strengthens enough. Friday will 
have a greater risk for a sea breeze. 

KBDL...High confidence in TAF.

Outlook /Friday Night through Monday/...

Friday Night: VFR. 

Saturday: VFR. Breezy. Slight chance SHRA, slight chance TSRA.

Saturday Night: VFR. Breezy. Chance SHRA, slight chance TSRA.

Sunday: Mainly VFR, with areas MVFR possible. Breezy. SHRA
likely, chance TSRA.

Sunday Night: Mainly VFR, with local IFR possible. Breezy.
Chance SHRA, patchy BR.

Monday: Mainly VFR, with local MVFR possible. Breezy. Slight
chance SHRA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Today through Friday...High confidence.

Winds and seas remain below SCA criteria through Friday. SW winds 
increase to around 15-20 kt today, with occasional marginal SCA-
level gusts near 25 kt across the Cape and Islands waters, including 
Buzzards Bay, Vineyard Sound, and Nantucket Sound, where stronger SW 
flow is favored through sunset. A similar setup may develop again 
Friday, though confidence is too low at this time to warrant an 
additional Small Craft Advisory. Seas remain 3 ft or less on all 
waters.

Outlook /Friday Night through Monday/...

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

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

Saturday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas up to 5 ft. Chance of rain showers,
slight chance of thunderstorms, patchy fog. 

Sunday: Winds less than 25 kt. Local rough seas. Rain showers
likely, slight chance of thunderstorms, patchy fog. 

Sunday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas up to 5 ft. Chance of rain showers,
patchy fog. 

Monday: Moderate risk for Small Craft Advisory winds with gusts
up to 30 kt. Seas up to 5 ft. Slight chance of rain showers.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from noon today to 9 PM EDT this evening 
     for ANZ232>234.

&&

$$

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

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