Lexington Weather

Current Conditions [‒] Current Conditions [+]

75.4°F

24.1°C

Warm

Clear

This Afternoon: Hi 81 °F

Tonight: Lo 58 °F

Dew Point: 50.7°F Decreased 1.8°F since last hour.

Humidity: 42% Decreased 3.0% since last hour.

Air Quality Index: 34

Good

(Ozone)

Barometer: 30.04 in S

1017 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Wednesday: 0.41 in

Visibility: 10 miles

Wind:

Now: 1 mph

Avg: Calm

Gusts: 2 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
This Afternoon, Tonight, & Friday through Wednesday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu Jul 23, 2026 1:56pm EDT

Overview:

- Mainly dry with seasonable temperatures through this weekend.

- Periodic chances for scattered showers & thunderstorms with summerlike humidity both return in the late Mon through Wed timeframe...perhaps lingering into Thu.

This Afternoon:

Sunny

Hi 81 °F

Sunny, with a high near 81. Northwest wind around 6 mph.

Tonight:

Clear

Lo 58 °F

Clear, with a low around 58. Southwest wind around 5 mph.

Friday:

Sunny

Hi 83 °F

Sunny, with a high near 83. Southwest wind 2 to 7 mph.

Friday Night:

Mostly Clear

Lo 60 °F

Mostly clear, with a low around 60. South wind 2 to 7 mph.

Saturday:

Sunny

Hi 81 °F

Sunny, with a high near 81. East wind 1 to 8 mph.

Saturday Night:

Mostly Clear

Lo 55 °F

Mostly clear, with a low around 55. Northeast wind 2 to 7 mph.

Sunday:

Mostly Sunny

Hi 78 °F

Mostly sunny, with a high near 78. Northeast wind 2 to 8 mph.

Sunday Night:

Partly Cloudy

Lo 59 °F

Partly cloudy, with a low around 59. Southeast wind 2 to 7 mph.

Monday:

Mostly Sunny then Slight Chance Showers And T-Storms

Hi 84 °F

Monday: Mostly Sunny then Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. South wind 2 to 8 mph.

Monday Night:

Slight Chance Showers And T-Storms

Lo 65 °F

Monday Night: Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 5 to 8 mph.

Tuesday:

Showers And T-Storms Likely

Hi 82 °F

Tuesday: Showers And Thunderstorms Likely

A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 82. South wind 5 to 8 mph. Chance of precipitation is 70%.

Tuesday Night:

Showers And T-Storms Likely

Lo 63 °F

Tuesday Night: Showers And Thunderstorms Likely

Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Southwest wind around 7 mph. Chance of precipitation is 70%.

Wednesday:

Chance Rain Showers

Hi 80 °F

A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. North wind 5 to 8 mph. Chance of precipitation is 40%.

Wednesday Night:

Chance Showers And T-Storms

Lo 64 °F

Wednesday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 64. North wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 3pm through Sat 2am

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu Jul 23, 2026 1:56pm EDT

3:00pm

Sunny

79°F
Dew Pt 51°F
Wind from NW

NW 6 mph
Precip: 0%

4:00pm

Sunny

80°F
Dew Pt 51°F
Wind from NW

NW 6 mph
Precip: 0%

5:00pm

Sunny

79°F
Dew Pt 51°F
Wind from W

W 6 mph
Precip: 0%

6:00pm

Mostly Clear

78°F
Dew Pt 52°F
Wind from NW

NW 5 mph
Precip: 0%

7:00pm

Mostly Clear

76°F
Dew Pt 53°F
Wind from W

W 3 mph
Precip: 0%

8:00pm

Clear

72°F
Dew Pt 55°F
Wind from W

W 3 mph
Precip: 0%

9:00pm

Clear

69°F
Dew Pt 55°F
Wind from SW

SW 3 mph
Precip: 0%

10:00pm

Clear

67°F
Dew Pt 55°F
Wind from S

S 3 mph
Precip: 0%

11:00pm

Clear

65°F
Dew Pt 56°F
Wind from S

S 3 mph
Precip: 0%

Fri
12:00am

Clear

64°F
Dew Pt 56°F
Wind from SW

SW 3 mph
Precip: 0%

Fri
1:00am

Clear

62°F
Dew Pt 57°F
Wind from SW

SW 2 mph
Precip: 0%

Fri
2:00am

Clear

61°F
Dew Pt 56°F
Wind from SW

SW 2 mph
Precip: 0%

Fri
3:00am

Clear

60°F
Dew Pt 56°F
Wind from SW

SW 2 mph
Precip: 0%

Fri
4:00am

Clear

59°F
Dew Pt 55°F
Wind from W

W 2 mph
Precip: 0%

Fri
5:00am

Clear

58°F
Dew Pt 55°F
Wind from W

W 2 mph
Precip: 0%

Fri
6:00am

Sunny

58°F
Dew Pt 55°F
Wind from W

W 2 mph
Precip: 0%

Fri
7:00am

Sunny

60°F
Dew Pt 56°F
Wind from W

W 2 mph
Precip: 0%

Fri
8:00am

Sunny

64°F
Dew Pt 57°F
Wind from NW

NW 2 mph
Precip: 0%

Fri
9:00am

Sunny

69°F
Dew Pt 58°F
Wind from NW

NW 2 mph
Precip: 0%

Fri
10:00am

Sunny

75°F
Dew Pt 57°F
Wind from SE

SE 2 mph
Precip: 0%

Fri
11:00am

Sunny

78°F
Dew Pt 57°F
Wind from S

S 3 mph
Precip: 0%

Fri
12:00pm

Sunny

80°F
Dew Pt 56°F
Wind from S

S 3 mph
Precip: 0%

Fri
1:00pm

Sunny

81°F
Dew Pt 55°F
Wind from SE

SE 3 mph
Precip: 0%

Fri
2:00pm

Sunny

81°F
Dew Pt 55°F
Wind from SE

SE 5 mph
Precip: 0%

Fri
3:00pm

Sunny

82°F
Dew Pt 56°F
Wind from SE

SE 6 mph
Precip: 0%

Fri
4:00pm

Sunny

82°F
Dew Pt 56°F
Wind from SE

SE 6 mph
Precip: 0%

Fri
5:00pm

Sunny

81°F
Dew Pt 56°F
Wind from SE

SE 7 mph
Precip: 0%

Fri
6:00pm

Mostly Clear

80°F
Dew Pt 56°F
Wind from SE

SE 7 mph
Precip: 0%

Fri
7:00pm

Mostly Clear

78°F
Dew Pt 56°F
Wind from SE

SE 7 mph
Precip: 0%

Fri
8:00pm

Mostly Clear

72°F
Dew Pt 55°F
Wind from SE

SE 6 mph
Precip: 1%

Fri
9:00pm

Clear

69°F
Dew Pt 57°F
Wind from SE

SE 5 mph
Precip: 0%

Fri
10:00pm

Mostly Clear

68°F
Dew Pt 57°F
Wind from S

S 3 mph
Precip: 0%

Fri
11:00pm

Mostly Clear

66°F
Dew Pt 56°F
Wind from S

S 3 mph
Precip: 0%

Sat
12:00am

Mostly Clear

64°F
Dew Pt 56°F
Wind from S

S 3 mph
Precip: 0%

Sat
1:00am

Mostly Clear

62°F
Dew Pt 56°F
Wind from S

S 3 mph
Precip: 0%

Sat
2:00am

Mostly Clear

60°F
Dew Pt 56°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 231826
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
226 PM EDT Thu Jul 23 2026

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

&&

.KEY MESSAGES...

- Mainly dry with seasonable temperatures through this weekend.

- Periodic chances for scattered showers & thunderstorms with 
  summerlike humidity both return in the late Mon through Wed 
  timeframe...perhaps lingering into Thu. 

&&

.DISCUSSION...

KEY MESSAGE 1...Mainly dry with seasonable temperatures through
this weekend. 

A surface high pressure will dominate our weather through this
weekend. It will remain relatively cool for late July with
comfortable humidity for most. Once of the more uncertain
aspects to this forecast will be the winds.

Gusty W to NW winds early this afternoon will continue to
subside into this evening. Not as confident this will lead to an
east coast sea-breeze for most, as the gradient wind would be
more likely to keep it just offshore. As this high pressure
moves overhead tonight into Friday, winds become very
light/calm. Have greater confidence in sea-breezes developing
Friday. 

KEY MESSAGE 2...Periodic chances for scattered showers & 
thunderstorms with summerlike humidity both return in the late Mon 
through Wed timeframe...perhaps lingering into Thu. 

The next shortwave trough approaches the region from the west in
the late Mon-Wed timeframe. This will allow southerly flow to 
bring typical summerlike humidity back to southern New England. 
This will also bring a return to period chances of showers and 
thunderstorms to the region in the late Mon-Wed time 
frame...perhaps lingering int Thu if trough is slower to depart.
As is typical this time of year...that entire period will not 
be a washout with many hours of dry weather. While specific 
timing is impossible to pinpoint...afternoon/evenings will be 
favored given diurnal heating/instability. Pwats on the order of
1.50 to 2" will bring the risk of localized heavy rainfall 
within any convection.

Temperatures fairly seasonable for this time of year. Lows may be a 
bit above normal with highs a touch below normal given the 
increasing low level moisture for the middle of next week. Nothing 
though really out of the ordinary for July standards. 

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/...

Forecaster Confidence Levels...

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

Through 00Z...High confidence.

VFR. Winds WNW to NW for most terminals 5-10 kts. Sea-breezes
likely for the coastal areas developing 18-20Z as NW winds 
weaken.

Tonight through Friday Night...High confidence.

VFR. Light to calm winds overnight out of the S to SW, shift
more towards S to SE for Friday, then finally more E to NE late
Friday night.

KBOS Terminal...High confidence in TAF. 

Lower confidence in a sea-breeze developing after this
afternoon. Gusty NW winds are more likely to keep the sea-breeze
front over the harbor. There is still a low chance for a brief
sea-breeze right before the evening push.

KBDL Terminal...High confidence in TAF.

Outlook /Saturday through Tuesday/...

Saturday: VFR. Breezy. 

Saturday Night through Sunday Night: VFR. 

Monday: VFR. Slight chance SHRA, slight chance TSRA.

Monday Night: VFR. Chance SHRA.

Tuesday: Mainly VFR, with local IFR possible. Breezy. Chance
SHRA, chance TSRA.

&&

.MARINE...

Forecaster Confidence Levels...

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

Through Friday Night...High confidence.

Winds and seas continue to subside into tonight as a high
pressure moves over the waters Friday. Lingering rough seas
across the coastal waters behind a cold front. Did tweak the end
timing of the current Small Craft Advisories to account for
observed trends. 

High Surf Advisory remains in effect for exposed southern 
coastlines through this evening. Prolonged period of higher 
seas and SW flow have increased the risk for rip currents. The
higher risk decreases Friday.

Outlook /Saturday through Tuesday/...

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

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

Sunday Night through Monday: Winds less than 25 kt. 

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

Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Chance of rain showers. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...High Surf Advisory until 8 PM EDT this evening for MAZ020>024.
RI...High Surf Advisory until 8 PM EDT this evening for RIZ006>008.
MARINE...Small Craft Advisory until 7 PM EDT this evening for ANZ254-
     256.
     Small Craft Advisory until 11 PM EDT this evening for ANZ255.

&&

$$

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

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