Lexington Weather

Current Conditions [‒] Current Conditions [+]

79.0°F Colder than last hour.

26.1°C

Warm

Partly cloudy

This Afternoon: Hi 80 °F

Tonight: Lo 59 °F

Dew Point: 59.4°F Increased 0.6°F since last hour .

Humidity: 51% Increased 2.0% since last hour.

Air Quality Index: 51

Moderate

(Fine Particles)

Barometer: 29.84 in S

1010 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Sunday: 0.47 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: 1 mph

Gusts: 11 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
This Afternoon, Tonight, & Tuesday through Sunday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Mon Aug 24, 2026 4:26pm EDT

Overview:

- Mainly dry and seasonable conditions, outside of a stray shower this afternoon and Tuesday afternoon.

- Main risk for a round of scattered showers and a few thunderstorms will be sometime late Thu/Thu night into Fri with summerlike humidity. Mainly dry & seasonable weather favored for the weekend.

This Afternoon:

Sunny

Hi 80 °F

Sunny, with a high near 80. Southwest wind around 9 mph.

Tonight:

Isolated Rain Showers then Mostly Clear

Lo 59 °F

Isolated rain showers between 7pm and 8pm. Mostly clear, with a low around 59. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.

Tuesday:

Sunny

Hi 79 °F

Sunny, with a high near 79. West wind 3 to 8 mph.

Tuesday Night:

Mostly Clear

Lo 58 °F

Mostly clear, with a low around 58. West wind 3 to 7 mph.

Wednesday:

Sunny

Hi 82 °F

Sunny, with a high near 82. West wind around 5 mph.

Wednesday Night:

Partly Cloudy

Lo 60 °F

Partly cloudy, with a low around 60. South wind around 5 mph.

Thursday:

Partly Sunny then Slight Chance Showers And T-Storms

Hi 81 °F

Thursday: Partly Sunny then Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 81. South wind 3 to 10 mph, with gusts as high as 21 mph.

Thursday Night:

Chance Showers And T-Storms

Lo 65 °F

Thursday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 3 to 9 mph. Chance of precipitation is 50%.

Friday:

Chance Rain Showers

Hi 82 °F

A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. Southwest wind 3 to 7 mph. Chance of precipitation is 50%.

Friday Night:

Chance Showers And T-Storms then Partly Cloudy

Lo 58 °F

Friday Night: Chance Showers And Thunderstorms then Partly Cloudy

A chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 58. West wind around 6 mph. Chance of precipitation is 40%.

Saturday:

Mostly Sunny

Hi 83 °F

Mostly sunny, with a high near 83. Northwest wind around 5 mph.

Saturday Night:

Partly Cloudy

Lo 58 °F

Partly cloudy, with a low around 58. Southwest wind around 5 mph.

Sunday:

Mostly Sunny

Hi 83 °F

Mostly sunny, with a high near 83. West wind 2 to 6 mph.

Sunday Night:

Partly Cloudy

Lo 63 °F

Partly cloudy, with a low around 63. Southwest wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 5pm through Wed 4am

Issued by:
National Weather Service Boston / Norton, MA
Updated Mon Aug 24, 2026 4:26pm EDT

5:00pm

Sunny

76°F
Dew Pt 60°F
Wind from SW

SW 9 mph
Precip: 6%

6:00pm

Mostly Clear

75°F
Dew Pt 60°F
Wind from SW

SW 8 mph
Precip: 7%

7:00pm

Isolated Rain Showers

73°F
Dew Pt 60°F
Wind from SW

SW 7 mph
Precip: 17%

8:00pm

Mostly Clear

71°F
Dew Pt 60°F
Wind from SW

SW 5 mph
Precip: 8%

9:00pm

Mostly Clear

69°F
Dew Pt 60°F
Wind from SW

SW 5 mph
Precip: 6%

10:00pm

Mostly Clear

68°F
Dew Pt 60°F
Wind from SW

SW 5 mph
Precip: 4%

11:00pm

Mostly Clear

66°F
Dew Pt 60°F
Wind from SW

SW 3 mph
Precip: 2%

Tue
12:00am

Mostly Clear

65°F
Dew Pt 60°F
Wind from SW

SW 3 mph
Precip: 2%

Tue
1:00am

Mostly Clear

64°F
Dew Pt 60°F
Wind from SW

SW 3 mph
Precip: 1%

Tue
2:00am

Mostly Clear

63°F
Dew Pt 60°F
Wind from SW

SW 3 mph
Precip: 1%

Tue
3:00am

Mostly Clear

62°F
Dew Pt 59°F
Wind from SW

SW 3 mph
Precip: 1%

Tue
4:00am

Mostly Clear

61°F
Dew Pt 58°F
Wind from SW

SW 3 mph
Precip: 1%

Tue
5:00am

Mostly Clear

60°F
Dew Pt 58°F
Wind from SW

SW 3 mph
Precip: 1%

Tue
6:00am

Sunny

59°F
Dew Pt 57°F
Wind from SW

SW 3 mph
Precip: 2%

Tue
7:00am

Sunny

60°F
Dew Pt 58°F
Wind from W

W 3 mph
Precip: 2%

Tue
8:00am

Sunny

64°F
Dew Pt 59°F
Wind from W

W 5 mph
Precip: 3%

Tue
9:00am

Sunny

68°F
Dew Pt 60°F
Wind from W

W 5 mph
Precip: 3%

Tue
10:00am

Sunny

70°F
Dew Pt 60°F
Wind from W

W 6 mph
Precip: 3%

Tue
11:00am

Sunny

73°F
Dew Pt 60°F
Wind from W

W 7 mph
Precip: 3%

Tue
12:00pm

Sunny

74°F
Dew Pt 60°F
Wind from W

W 8 mph
Precip: 6%

Tue
1:00pm

Sunny

75°F
Dew Pt 60°F
Wind from W

W 8 mph
Precip: 9%

Tue
2:00pm

Mostly Sunny

76°F
Dew Pt 61°F
Wind from W

W 8 mph
Precip: 13%

Tue
3:00pm

Mostly Sunny

76°F
Dew Pt 61°F
Wind from W

W 8 mph
Precip: 12%

Tue
4:00pm

Mostly Sunny

76°F
Dew Pt 61°F
Wind from W

W 8 mph
Precip: 12%

Tue
5:00pm

Mostly Sunny

76°F
Dew Pt 61°F
Wind from W

W 8 mph
Precip: 12%

Tue
6:00pm

Mostly Clear

74°F
Dew Pt 61°F
Wind from W

W 7 mph
Precip: 10%

Tue
7:00pm

Mostly Clear

72°F
Dew Pt 61°F
Wind from W

W 6 mph
Precip: 8%

Tue
8:00pm

Clear

71°F
Dew Pt 61°F
Wind from W

W 5 mph
Precip: 6%

Tue
9:00pm

Clear

69°F
Dew Pt 61°F
Wind from W

W 5 mph
Precip: 4%

Tue
10:00pm

Clear

66°F
Dew Pt 60°F
Wind from W

W 5 mph
Precip: 2%

Tue
11:00pm

Clear

64°F
Dew Pt 60°F
Wind from W

W 5 mph
Precip: 0%

Wed
12:00am

Mostly Clear

63°F
Dew Pt 60°F
Wind from W

W 5 mph
Precip: 0%

Wed
1:00am

Clear

62°F
Dew Pt 60°F
Wind from W

W 3 mph
Precip: 0%

Wed
2:00am

Clear

61°F
Dew Pt 60°F
Wind from W

W 3 mph
Precip: 0%

Wed
3:00am

Clear

60°F
Dew Pt 60°F
Wind from NW

NW 3 mph
Precip: 0%

Wed
4:00am

Clear

59°F
Dew Pt 59°F
Wind from NW

NW 3 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 241720
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
120 PM EDT Mon Aug 24 2026

.WHAT HAS CHANGED...
High Risk of rip currents through this evening for the south-facing 
beaches of Marth'a Vineyard and Nantucket. A marginal Small Craft 
Advisory issued for Buzzards Bay and Vineyard Sound for Tuesday 
afternoon. 

&&

.KEY MESSAGES...

- Mainly dry and seasonable conditions, outside of a stray
  shower this afternoon and Tuesday afternoon.

- Main risk for a round of scattered showers and a few
  thunderstorms will be sometime late Thu/Thu night into Fri
  with summerlike humidity. Mainly dry & seasonable weather
  favored for the weekend.

&&

.DISCUSSION...
KEY MESSAGE 1...Mainly dry and seasonable conditions, outside of a 
stray shower this afternoon and Tuesday afternoon.

The synoptic setup for the next several days is as follows. A mid-
level low, which is easily seen on GOES water vapor imagery across 
northern New York, will move into northern New England before 
drifting east into the Canadian Maritimes by Wednesday. Locally, 
Wednesday brings a subtle shortwave ridge. In general, expect benign 
conditions through the first half of Thursday as surface high 
pressure expands into the Northeast from the Midwest. However, a 
stray pop-up shower or thunderstorm remains possible this afternoon 
and Tuesday afternoon due to cyclonic flow, which will promote 
diurnal cu development amid steep low-level lapse rates (greater 
than 8C/km) along a trough. No severe weather is expected, as mid-
level lapse rates remain poor (less than 6C/km). Areas with the best 
chance of experiencing a brief shower or storm (less than a 25 PoP) 
through this afternoon are west of KIJD, KORH, and KFIT, associated 
with the passage of a weak surface trough. Thereafter, cannot 
discredit a shower farther east along the Boston-to-Providence 
corridor. Similar conditions are expected again Tuesday. Wednesday 
into Thursday, the mid-level shortwave ridge moves through, 
providing another dry day Wednesday. However, the ridge shifts east 
by Thursday ahead of an approaching trough, which has the potential 
to bring numerous showers late Thursday into Friday. More on that in 
Key Message 2.

As for temperatures, expect a seasonable week, with afternoon highs 
in the lower 80s and higher-terrain communities in the northern 
Worcester Hills and eastern Berkshires remaining in the middle to 
upper 70s. Nightly lows will be a touch cooler as clear skies and 
light winds allow for radiational cooling, with temperatures 
slipping back into the 50s while urban areas remain near 60 degrees. 
This setup may allow for another night of low stratus or fog. 
Confidence in how widespread it becomes remains low; however, it 
does not appear this round of fog will be as prevalent as last
night.


KEY MESSAGE 2...Main risk for a round of scattered showers and a few 
thunderstorms will be sometime late Thu/Thu night into Fri with 
summerlike humidity. Mainly dry & seasonable weather favored for the 
weekend.

The next shortwave trough approaches from the west by late in the 
work week. Ahead of this approaching shortwave...summerlike humidity 
will return Thu into Fri. Timing quite uncertain this far out in the 
forecast...But appears there will be the potential for a round of 
scattered showers and a few thunderstorms sometime in the late 
Thu/Thu night into Fri time frame. CSU machine learning probs do 
indicate some low probs for severe weather/heavy rainfall 
potential...But that is really just climo for an approaching 
shortwave this time of year. So not much more we can say at this 
point. Current guidance does indicate that drier/seasonable weather 
is favored to return for the upcoming weekend.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
Forecaster Confidence Levels...

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

18z TAF Update:

Through 12z...Moderate to high confidence.

VFR. SW to WSW wind gusts of 20 to 25 kt through 23-00z, diminishing 
thereafter. A stray shower or thunderstorm remains possible this 
afternoon, primarily west of KIJD, KORH, and KFIT through 00z. 
Thereafter, cannot discredit a shower farther east toward the KBOS 
to KPVD corridor. Overnight, light to calm winds and clear skies may 
allow for areas of fog. Confidence in how widespread fog becomes 
remains low, though it does not appear this round will be as 
prevalent as last night.

Tuesday...High confidence in trends, lower confidence in shower 
coverage.

VFR. WSW to W winds 8 to 12 kt, with gusts up to 18 kt. A stray 
shower or thunderstorm is possible during the afternoon, though 
confidence in areal coverage remains low.

Tuesday Night...

VFR and dry. W to WNW winds less than 5 kt.

KBOS Terminal...High confidence.

Wind gusts through 23-00z, then SSW to SW winds overnight at 5 to 8 
kt. Winds shift to WSW to W Tuesday, with speeds of 10 to 12 kt and 
gusts up to 18 kt.

KBDL Terminal...High confidence.

Outlook /Wednesday through Saturday/...

Wednesday through Wednesday Night: VFR. 

Thursday: VFR. Breezy. Chance SHRA, chance TSRA.

Thursday Night: Mainly VFR, with local MVFR possible. Chance
SHRA, slight chance TSRA.

Friday: VFR. Chance SHRA, slight chance TSRA.

Friday Night through Saturday: VFR. 

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Tuesday Night...High confidence.

Fairly quiet boating conditions through the first half of this week 
as high pressure develops across the Midwest before expanding toward 
the waters off the coast of southern New England. Gusty southwest 
flow develops Tuesday, with gusts around 20 kt. However, Vineyard 
Sound and Buzzards Bay are oriented roughly parallel to the wind, 
allowing for a localized enhancement from funneling. Have opted to 
issue a marginal Small Craft Advisory for gusts up to 25 kt Tuesday 
afternoon. Conditions improve overnight into early Wednesday morning 
as winds shift to the northwest.

Swell periods of 11-12 seconds are expected off the coasts of 
Martha's Vineyard and Nantucket, which will lead to a higher risk of 
rip currents along south-facing beaches there, warranting expansion 
of the Rip Current Statement over the Vineyard. A moderate risk for 
rip currents extends along SE MA and RI beaches due to swells as 
well.

Outlook /Wednesday through Saturday/...

Wednesday: Winds less than 25 kt. Seas locally approaching
5 ft. 

Wednesday Night through Thursday: Winds less than 25 kt. 

Thursday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft. Chance of rain showers, slight chance of
thunderstorms. 

Friday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain
showers. 

Friday Night: Winds less than 25 kt. Seas up to 5 ft. Slight
chance of rain showers. 

Saturday: Winds less than 25 kt. Seas locally approaching 5 ft.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...High Risk for Rip Currents until 6 PM EDT this evening for MAZ023-
     024.
RI...None.
MARINE...Small Craft Advisory from 11 AM to 8 PM EDT Tuesday for ANZ233-
     234.

&&

$$

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

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