Lexington Weather

Current Conditions [‒] Current Conditions [+]

70.3°F Colder than last hour.

21.3°C

Muggy

Mostly cloudy

Tonight: Lo 62 °F

Monday: Hi 78 °F

Dew Point: 64.2°F Decreased 0.7°F since last hour.

Humidity: 81% Increased 1.0% since last hour.

Barometer: 29.97 in S

1015 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Sunday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Tonight, Monday, & Monday Night through Sunday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sun Aug 30, 2026 4:06pm EDT

Overview:

- Scattered showers possible tonight and dry during the day Monday, though cooler with few clouds following a backdoor cold front.

- Unsettled Monday night through Thursday, with several opportunites for showers and thunderstorms. Timing which days may have better storm chances is still low-confidence.

- Mix of clouds and sun with diurnally driven spot showers Friday into the early part of Labor Day Weekend, but drier weather most of the time. Dry and seasonable Sunday and on the Monday holiday, with onshore breezes.

Tonight:

Slight Chance Rain Showers then Mostly Cloudy

Lo 62 °F

A slight chance of rain showers before 10pm. Mostly cloudy, with a low around 62. West wind around 7 mph. Chance of precipitation is 20%.

Monday:

Mostly Sunny

Hi 78 °F

Mostly sunny, with a high near 78. Northeast wind 5 to 8 mph.

Monday Night:

Mostly Cloudy then Rain Showers Likely

Lo 64 °F

Rain showers likely after midnight. Mostly cloudy, with a low around 64. South wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Tuesday:

Rain Showers

Hi 74 °F

Rain showers before 2pm, then showers and thunderstorms likely. Cloudy, with a high near 74. Southeast wind 3 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday Night:

Showers And T-Storms Likely

Lo 61 °F

Tuesday Night: Showers And Thunderstorms Likely

Showers and thunderstorms likely before 5am. Cloudy, with a low around 61. East wind around 7 mph. Chance of precipitation is 70%.

Wednesday:

Mostly Cloudy then Chance Showers And T-Storms

Hi 73 °F

Wednesday: Mostly Cloudy then Chance Showers And Thunderstorms

A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 73. East wind around 7 mph. Chance of precipitation is 50%.

Wednesday Night:

Showers And T-Storms Likely

Lo 63 °F

Wednesday Night: Showers And Thunderstorms Likely

Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Southeast wind around 6 mph. Chance of precipitation is 60%.

Thursday:

Showers And T-Storms Likely

Hi 78 °F

Thursday: Showers And Thunderstorms Likely

Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Southwest wind around 7 mph. Chance of precipitation is 60%.

Thursday Night:

Chance Showers And T-Storms

Lo 62 °F

Thursday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. North wind around 6 mph. Chance of precipitation is 50%.

Friday:

Slight Chance Rain Showers

Hi 77 °F

A slight chance of rain showers. Partly sunny, with a high near 77. North wind around 7 mph.

Friday Night:

Slight Chance Rain Showers

Lo 59 °F

A slight chance of rain showers before 2am. Mostly cloudy, with a low around 59. North wind around 5 mph.

Saturday:

Mostly Sunny then Slight Chance Rain Showers

Hi 74 °F

A slight chance of rain showers after 1pm. Mostly sunny, with a high near 74. North wind around 7 mph.

Saturday Night:

Slight Chance Rain Showers then Partly Cloudy

Lo 57 °F

A slight chance of rain showers before 8pm. Partly cloudy, with a low around 57. North wind around 5 mph.

Sunday:

Mostly Sunny

Hi 74 °F

Mostly sunny, with a high near 74. Northeast wind around 7 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 12am through Tue 11am

Issued by:
National Weather Service Boston / Norton, MA
Updated Sun Aug 30, 2026 4:06pm EDT

12:00am

Mostly Cloudy

69°F
Dew Pt 62°F
Wind from W

W 6 mph
Precip: 5%

1:00am

Mostly Cloudy

68°F
Dew Pt 62°F
Wind from W

W 5 mph
Precip: 2%

2:00am

Mostly Cloudy

67°F
Dew Pt 61°F
Wind from NW

NW 6 mph
Precip: 0%

3:00am

Mostly Cloudy

65°F
Dew Pt 60°F
Wind from NW

NW 5 mph
Precip: 0%

4:00am

Mostly Cloudy

64°F
Dew Pt 60°F
Wind from NW

NW 5 mph
Precip: 0%

5:00am

Partly Cloudy

63°F
Dew Pt 60°F
Wind from NW

NW 5 mph
Precip: 0%

6:00am

Mostly Sunny

62°F
Dew Pt 59°F
Wind from NW

NW 5 mph
Precip: 0%

7:00am

Mostly Sunny

63°F
Dew Pt 60°F
Wind from N

N 5 mph
Precip: 0%

8:00am

Sunny

65°F
Dew Pt 61°F
Wind from N

N 5 mph
Precip: 0%

9:00am

Sunny

68°F
Dew Pt 60°F
Wind from NE

NE 6 mph
Precip: 0%

10:00am

Sunny

71°F
Dew Pt 60°F
Wind from NE

NE 5 mph
Precip: 0%

11:00am

Sunny

73°F
Dew Pt 59°F
Wind from E

E 5 mph
Precip: 0%

12:00pm

Mostly Sunny

74°F
Dew Pt 58°F
Wind from E

E 5 mph
Precip: 0%

1:00pm

Mostly Sunny

75°F
Dew Pt 58°F
Wind from SE

SE 5 mph
Precip: 0%

2:00pm

Mostly Sunny

76°F
Dew Pt 58°F
Wind from SE

SE 6 mph
Precip: 0%

3:00pm

Mostly Sunny

76°F
Dew Pt 58°F
Wind from SE

SE 7 mph
Precip: 0%

4:00pm

Mostly Sunny

76°F
Dew Pt 59°F
Wind from SE

SE 7 mph
Precip: 0%

5:00pm

Mostly Sunny

75°F
Dew Pt 59°F
Wind from SE

SE 8 mph
Precip: 0%

6:00pm

Mostly Cloudy

74°F
Dew Pt 60°F
Wind from SE

SE 7 mph
Precip: 2%

7:00pm

Mostly Cloudy

72°F
Dew Pt 60°F
Wind from SE

SE 7 mph
Precip: 3%

8:00pm

Mostly Cloudy

71°F
Dew Pt 60°F
Wind from SE

SE 6 mph
Precip: 5%

9:00pm

Mostly Cloudy

70°F
Dew Pt 61°F
Wind from S

S 6 mph
Precip: 5%

10:00pm

Mostly Cloudy

69°F
Dew Pt 61°F
Wind from S

S 6 mph
Precip: 6%

11:00pm

Cloudy

68°F
Dew Pt 62°F
Wind from S

S 5 mph
Precip: 13%

Tue
12:00am

Chance Rain Showers

67°F
Dew Pt 62°F
Wind from S

S 5 mph
Precip: 28%

Tue
1:00am

Chance Rain Showers

67°F
Dew Pt 62°F
Wind from S

S 3 mph
Precip: 43%
Rain: 0.01 in

Tue
2:00am

Rain Showers Likely

66°F
Dew Pt 63°F
Wind from S

S 3 mph
Precip: 58%
Rain: 0.02 in

Tue
3:00am

Rain Showers Likely

66°F
Dew Pt 63°F
Wind from S

S 3 mph
Precip: 60%
Rain: 0.02 in

Tue
4:00am

Rain Showers Likely

66°F
Dew Pt 63°F
Wind from S

S 3 mph
Precip: 63%
Rain: 0.03 in

Tue
5:00am

Rain Showers Likely

66°F
Dew Pt 63°F
Wind from S

S 3 mph
Precip: 66%
Rain: 0.03 in

Tue
6:00am

Rain Showers Likely

66°F
Dew Pt 63°F
Wind from S

S 3 mph
Precip: 70%
Rain: 0.03 in

Tue
7:00am

Rain Showers Likely

66°F
Dew Pt 63°F
Wind from S

S 3 mph
Precip: 74%
Rain: 0.03 in

Tue
8:00am

Rain Showers

67°F
Dew Pt 65°F
Wind from S

S 5 mph
Precip: 78%

Tue
9:00am

Rain Showers Likely

69°F
Dew Pt 67°F
Wind from S

S 5 mph
Precip: 74%

Tue
10:00am

Rain Showers Likely

70°F
Dew Pt 67°F
Wind from S

S 6 mph
Precip: 71%
Rain: 0.01 in

Tue
11:00am

Rain Showers Likely

70°F
Dew Pt 67°F
Wind from SE

SE 7 mph
Precip: 67%
Rain: 0.02 in

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 302358
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
758 PM EDT Sun Aug 30 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...

- Scattered showers possible tonight and dry during the day
  Monday, though cooler with few clouds following a backdoor
  cold front.

- Unsettled Monday night through Thursday, with several 
  opportunites for showers and thunderstorms. Timing which days 
  may have better storm chances is still low-confidence. 

- Mix of clouds and sun with diurnally driven spot showers
  Friday into the early part of Labor Day Weekend, but drier
  weather most of the time. Dry and seasonable Sunday and on the
  Monday holiday, with onshore breezes.

&&

.DISCUSSION...
KEY MESSAGE 1...Scattered showers possible tonight and dry during 
the day Monday, though cooler with few clouds following a backdoor 
cold front.

Cloud cover continues to build in today as high pressure continues 
to push eastward and eventually offshore. Weak low pressure tracks 
near the region tonight as well, increasing chances for some 
scattered showers towards CT, RI, SE MA, Cape Cod, and the Islands. 
Not anticipating any washouts with any that move through tonight, 
and these should clear the region heading into Monday morning. Lows 
tonight will generally fall into the upper 50s and low to mid 60s.

A backdoor cold front is expected to make its way across southern 
New England late tonight into tomorrow morning, clearing skies and 
ushering in drier air. Winds aloft shift more N then NE after 
midnight, reaching the surface after daybreak. This onshore flow 
will also aid in keeping eastern parts of the region slightly 
cooler; highs closest to the coast will generally be in the low 70s. 
Still, much of the region can expect a less humid day with highs in 
the upper 70s. Heading into Monday evening/night, high pressure 
shifts full offshore, which will introduce the start of a more 
unsettled pattern.

KEY MESSAGE 2...Unsettled Monday night through Thursday, with 
several opportunites for showers and thunderstorms. Timing which
days may have better storm chances is still low-confidence. 

We still look to enter into a cloudy and unsettled weather pattern, 
as a stalled frontal boundary in the vicinity of Southern New 
England or just to our southwest focuses several opportunites for 
showers and storms Monday night through Thursday. The wavy frontal 
boundary separates hot, humid and conditionally unstable air to our 
southwest, with more seasonable and less humid air over 
northern/eastern New England, with strong NW flow aloft. It likely 
won't be raining the whole period of time, but in a pattern governed 
by convection and hard-to-time shortwaves in the NW flow aloft, 
timing which period(s) and the location of showers and storms is 
still subject to change and is low-confidence, with poor run-to-run 
consistency across the model suite. 

Right now the two periods that appear to have the best chance of 
showers and storms looks to be Monday night and into the first part 
of Tuesday, and again later Wednesday afternoon into part of 
Thursday. Tried to introduce higher PoPs (high Chance to Likely) for 
these days, but a general slight chance to chance governs the Monday 
night thru Thursday period. It looks like the potential for storms 
to become strong to severe looks limited, but a slightly better 
chance exists later Wednesday into Thursday as a stronger, more-
coherent shortwave aloft allows for at least some of the more 
unstable warm sector to work its way in. Temperatures were kept in 
the 70s to low 80s Tue thru Thurs, with rather mild lows in the mid 
60s (climo low temperature values are in the upper 50s/around 60). 
  
KEY MESSAGE 3...Mix of clouds and sun with diurnally driven 
spot showers Friday into the early part of Labor Day Weekend, 
but drier weather most of the time. Dry and seasonable Sunday 
and on the Monday holiday, with onshore breezes. 

Stalled frontal boundary finally moves offshore Thursday, although 
cyclonic flow aloft will keep our weather pattern somewhat unsettled 
with a mix of clouds and sun. Spot showers are possble Friday and 
Saturday afternoon but should be drier much of the time. Broad high 
pressure then works in from the north Sunday into Labor Day, leading 
to an onshore flow but with sunny and dry conditions.

&&

.AVIATION /00Z MONDAY THROUGH FRIDAY/...
Forecaster Confidence Levels...

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

00z TAF Update: 

Tonight: High confidence. 

VFR; spotty rain showers working their way through Southern New
England are falling into drier air. These should pass offshore
between 02-04z. Thereafter, winds shift from SW around 10-15 kt
to WNW/NW around 5-10 kt. 

Monday: High confidence.

VFR. A backdoor cold front moves westward through Southern New
England, starting around 11-13z in NE MA and not til 18-20z at
BDL. This will flip winds to NE around 5-10 kt, a little
stronger for the eastern coastal terminals. 

Monday Night...Moderate confidence.

MVFR with pockets of IFR possible further in the interior.
Rain chances increase from W to E after 00z Tuesday. Some 
embedded thunder possible as well.

KBOS Terminal...High confidence. P6SM -SHRA thru 02z mentioned
in TAF given SWly winds around 10-13 kt. Winds become NW
overnight, then a backdoor cold front brings a windshift to NE
around 11-13z with FEW-SCT Cu deck. 

KBDL Terminal...High confidence.

Outlook /Tuesday through Friday/...

Tuesday: MVFR/IFR conditions possible. SHRA likely, slight
chance TSRA.

Tuesday Night: Mainly VFR, with local IFR possible. SHRA
likely, slight chance TSRA.

Wednesday: Mainly VFR, with local IFR possible. Chance SHRA,
slight chance TSRA.

Wednesday Night: Mainly VFR, with local IFR possible. SHRA
likely, slight chance TSRA.

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

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

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

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Monday Night...High confidence.

SW winds continue over the waters as high pressure continues 
shifting offshore. Brief Small Craft Advisory-level gusts are
expected over the nearshore waters of the Cape and Islands
through midnight tonight at the latest. Showers and some
embedded thunder with them are possible tonight, particularly
towards the southern waters.

A backdoor front moves over the waters from N to S late tonight
into Monday morning, shifting winds more NE initially, then more
S heading into the evening hours. Light S winds over the waters
Monday night, along with more chances for showers and
thunderstorms.

Outlook /Tuesday through Friday/...

Tuesday: Winds less than 25 kt. Chance of rain showers,
isolated thunderstorms. 

Tuesday Night: Winds less than 25 kt. Seas locally approaching
5 ft. Chance of rain showers, slight chance of thunderstorms. 

Wednesday: Winds less than 25 kt. Seas locally approaching
5 ft. Chance of rain showers, isolated thunderstorms. 

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

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

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

Friday: Winds less than 25 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 until midnight EDT tonight for ANZ231>234.

&&

$$

DISCUSSION...Loconto/Hrencecin
AVIATION...Loconto/BW/Hrencecin
MARINE...Loconto/Hrencecin

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