Lexington Weather

Current Conditions [‒] Current Conditions [+]

84.7°F Warmer than last hour.

29.3°C

Feels like 89.1°F

Hot

Partly cloudy

This Afternoon: Hi 89 °F

Tonight: Lo 65 °F

Dew Point: 69.8°F Decreased 0.7°F since last hour.

Humidity: 61% Decreased 2.0% since last hour.

Air Quality Index: 37

Good

(Ozone)

Barometer: 29.70 in S

1006 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Thursday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
This Afternoon, Tonight, & Saturday through Thursday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Fri Jul 10, 2026 1:21pm EDT

Overview:

- Another warm and humid day today with a chance for isolated showers and storms.

- Dry and seasonable weather with low humidity levels this weekend into Monday.

- Heat and humidity return by midweek.

This Afternoon:

Partly Sunny

Hi 89 °F

Partly sunny, with a high near 89. Northwest wind around 9 mph.

Tonight:

Partly Cloudy

Lo 65 °F

Partly cloudy, with a low around 65. North wind 2 to 8 mph.

Saturday:

Mostly Sunny

Hi 84 °F

Mostly sunny, with a high near 84. Northeast wind around 6 mph.

Saturday Night:

Mostly Clear

Lo 63 °F

Mostly clear, with a low around 63. Northeast wind 1 to 5 mph.

Sunday:

Sunny

Hi 84 °F

Sunny, with a high near 84. Northeast wind 3 to 7 mph.

Sunday Night:

Mostly Clear

Lo 64 °F

Mostly clear, with a low around 64. South wind around 6 mph.

Monday:

Sunny

Hi 90 °F

Sunny, with a high near 90. Southwest wind 5 to 10 mph.

Monday Night:

Mostly Clear

Lo 70 °F

Mostly clear, with a low around 70. Southwest wind around 10 mph.

Tuesday:

Sunny

Hi 97 °F

Sunny, with a high near 97. West wind 8 to 12 mph, with gusts as high as 23 mph.

Tuesday Night:

Partly Cloudy

Lo 78 °F

Partly cloudy, with a low around 78. West wind around 12 mph, with gusts as high as 23 mph.

Wednesday:

Mostly Sunny

Hi 99 °F

Mostly sunny, with a high near 99. West wind 9 to 13 mph, with gusts as high as 24 mph.

Wednesday Night:

Partly Cloudy

Lo 71 °F

Partly cloudy, with a low around 71. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.

Thursday:

Mostly Sunny

Hi 92 °F

Mostly sunny, with a high near 92. West wind 5 to 10 mph.

Thursday Night:

Partly Cloudy

Lo 68 °F

Partly cloudy, with a low around 68. Northwest wind 5 to 8 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Sun 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Fri Jul 10, 2026 1:21pm EDT

2:00pm

Partly Sunny

87°F
Dew Pt 68°F
Heat Index: 91°F
Wind from NW

NW 8 mph
Precip: 2%

3:00pm

Partly Sunny

88°F
Dew Pt 67°F
Heat Index: 91°F
Wind from NW

NW 9 mph
Precip: 3%

4:00pm

Mostly Cloudy

88°F
Dew Pt 67°F
Heat Index: 91°F
Wind from NW

NW 9 mph
Precip: 4%

5:00pm

Partly Sunny

86°F
Dew Pt 66°F
Heat Index: 88°F
Wind from NW

NW 9 mph
Precip: 3%

6:00pm

Mostly Cloudy

85°F
Dew Pt 66°F
Heat Index: 87°F
Wind from NW

NW 8 mph
Precip: 5%

7:00pm

Mostly Cloudy

83°F
Dew Pt 66°F
Heat Index: 85°F
Wind from N

N 7 mph
Precip: 4%

8:00pm

Mostly Cloudy

79°F
Dew Pt 66°F
Wind from N

N 5 mph
Precip: 5%

9:00pm

Partly Cloudy

76°F
Dew Pt 66°F
Wind from NE

NE 3 mph
Precip: 6%

10:00pm

Partly Cloudy

75°F
Dew Pt 65°F
Wind from N

N 2 mph
Precip: 7%

11:00pm

Partly Cloudy

74°F
Dew Pt 65°F
Wind from N

N 3 mph
Precip: 1%

Sat
12:00am

Partly Cloudy

73°F
Dew Pt 64°F
Wind from N

N 3 mph
Precip: 1%

Sat
1:00am

Mostly Clear

71°F
Dew Pt 62°F
Wind from N

N 3 mph
Precip: 0%

Sat
2:00am

Partly Cloudy

70°F
Dew Pt 61°F
Wind from N

N 3 mph
Precip: 1%

Sat
3:00am

Partly Cloudy

68°F
Dew Pt 60°F
Wind from N

N 3 mph
Precip: 1%

Sat
4:00am

Partly Cloudy

67°F
Dew Pt 59°F
Wind from N

N 3 mph
Precip: 2%

Sat
5:00am

Mostly Clear

66°F
Dew Pt 58°F
Wind from N

N 3 mph
Precip: 2%

Sat
6:00am

Mostly Sunny

65°F
Dew Pt 58°F
Wind from N

N 3 mph
Precip: 2%

Sat
7:00am

Mostly Sunny

67°F
Dew Pt 59°F
Wind from N

N 3 mph
Precip: 2%

Sat
8:00am

Mostly Sunny

70°F
Dew Pt 60°F
Wind from N

N 3 mph
Precip: 2%

Sat
9:00am

Mostly Sunny

72°F
Dew Pt 59°F
Wind from NE

NE 3 mph
Precip: 2%

Sat
10:00am

Sunny

77°F
Dew Pt 59°F
Wind from NE

NE 5 mph
Precip: 1%

Sat
11:00am

Sunny

79°F
Dew Pt 58°F
Wind from NE

NE 5 mph
Precip: 1%

Sat
12:00pm

Sunny

81°F
Dew Pt 58°F
Wind from NE

NE 5 mph
Precip: 2%

Sat
1:00pm

Mostly Sunny

82°F
Dew Pt 58°F
Wind from E

E 6 mph
Precip: 3%

Sat
2:00pm

Mostly Sunny

82°F
Dew Pt 58°F
Wind from E

E 6 mph
Precip: 2%

Sat
3:00pm

Mostly Sunny

82°F
Dew Pt 58°F
Wind from E

E 6 mph
Precip: 3%

Sat
4:00pm

Mostly Sunny

83°F
Dew Pt 58°F
Wind from E

E 6 mph
Precip: 4%

Sat
5:00pm

Sunny

81°F
Dew Pt 58°F
Wind from E

E 6 mph
Precip: 3%

Sat
6:00pm

Mostly Clear

80°F
Dew Pt 58°F
Heat Index: 81°F
Wind from E

E 5 mph
Precip: 2%

Sat
7:00pm

Mostly Clear

78°F
Dew Pt 58°F
Wind from SE

SE 5 mph
Precip: 1%

Sat
8:00pm

Mostly Clear

75°F
Dew Pt 58°F
Wind from SE

SE 3 mph
Precip: 1%

Sat
9:00pm

Mostly Clear

72°F
Dew Pt 59°F
Wind from SE

SE 2 mph
Precip: 0%

Sat
10:00pm

Mostly Clear

70°F
Dew Pt 59°F
Wind from SE

SE 2 mph
Precip: 0%

Sat
11:00pm

Mostly Clear

69°F
Dew Pt 58°F
Wind from NW

NW 1 mph
Precip: 0%

Sun
12:00am

Partly Cloudy

68°F
Dew Pt 58°F
Wind from N

N 2 mph
Precip: 0%

Sun
1:00am

Partly Cloudy

67°F
Dew Pt 58°F
Wind from N

N 2 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 101158
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
758 AM EDT Fri Jul 10 2026

.WHAT HAS CHANGED...
No changes to the forecast for this update cycle.

&&

.KEY MESSAGES...

- Another warm and humid day today with a chance for isolated 
showers and storms. 

- Dry and seasonable weather with low humidity levels this weekend 
into Monday.

- Heat and humidity return by midweek.

&&

.DISCUSSION...
KEY MESSAGE 1...Another warm and humid day today with a chance
for isolated showers and storms. 
 
Cold front drops S from northern New England, crossing through 
northern MA this morning before slowing S of the Mass Pike by
the afternoon. Front acts as a focus for showers and isolated 
thunderstorms along and S of the Mass Pike as the column dries 
out significantly behind the front. General risks with any 
limited thunder activity will be limited to lightning and 
locally heavy rain as lingering cloud cover limits CAPE values 
to >1000 J/kg. Could see locally higher shower and storm 
coverage on the east coast of MA with a sea breeze acting as a 
mesoscale lifting mechanism. Thus, have POPs around 20-35% this 
afternoon in those areas. The other story today will be hot and 
humid conditions as highs warm into the upper 80s to near 90 for
much of the CWA. Highest heat index values will be along and S 
of the Mass Pike where dew point values will likely be near or 
above 70 degrees. 


KEY MESSAGE 2...Dry and seasonable weather with low humidity
levels this weekend into Monday.

Surface high pressure from Canada builds southward under
cyclonic flow aloft. NW flow aloft will cool 850 mb temps to 
+13-15C, which translates to highs in the mid 70s to low to mid 
80s. Should feel quite a bit more comfortable than what we've 
experienced over the last few weeks with low humidity levels and
dry weather Saturday through Monday. Other than some cooler 
seabreezes near the eastern coast, it's shaping up to be a great
weekend weatherwise. 

KEY MESSAGE 3...Heat and humidity return by midweek. 

A sprawling 594dm ridge over the central CONUS builds east
through midweek. By Tuesday and especially Wednesday,
temperatures become quite hot as 850 mb temps soar again into
the +18 to +22C range. These values are similar (somewhat cooler 
by comparison) to our last extended spell of high heat/humidity.
The potential could exist for temperatures in the 90s with high
humidity levels perhaps necessitating a period of heat 
headlines for midweek. The risk for thunderstorms looks limited,
with a better chance on Wednesday as NW flow aloft increases 
and a plume of elevated mid-level lapse rates builds in favoring
stronger instability.

&&

.AVIATION /12Z FRIDAY THROUGH TUESDAY/...
Forecaster Confidence Levels...

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

Today: Moderate confidence. 

Main issue for the TAFs Fri is the timing of the cold front 
southward. Current indications are for winds turning NWly under
10 kt for BDL-ORH-BED-BOS between 13-15z with BKN/OVC VFR
ceilings; winds turning NE under 10 kt at BOS early afternoon. 
Thinking area more favored to see SCT SHRA/TS is from HFD to 
PVD south and east after 17z, after overnight stratus disperses.
A slower passage would put more TAFs at risk for SHRA/TS. 

Tonight: High confidence. 

Lingering SHRA/TS moves offshore early Fri night to VFR
conditions. Outside chance at river valley fog if skies can
clear out. Winds become light northerly overnight.

Saturday: High confidence.

VFR. Light E to NE winds.

KBOS Terminal...Moderate confidence. E seabreeze could develop
sooner than currently in the TAF. Most SHRA/TSRA expected to
remain S of the terminal, but there is a low risk 18-23Z.

KBDL Terminal...Moderate confidence. Low risk for an isolated
SHRA/TSRA this afternoon. No enough confidence to include in the
TAF.

Outlook /Saturday Night through Tuesday/...

Saturday Night through Sunday Night: VFR. 

Monday through Tuesday: VFR. Breezy.

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Friday Night...High confidence.

A weak front approaches the waters from the NW this afternoon, 
but is not likely to pass the southern coastal waters until late 
Friday night at the earliest. A risk for scattered showers or 
thunderstorms tonight across the southern waters. Tranquil 
weather returns for the weekend under high pressure. 

Outlook /Saturday Night through Tuesday/...

Saturday Night: Winds less than 25 kt. 

Sunday through Sunday Night: Winds less than 25 kt. Seas
locally approaching 5 ft. 

Monday: Winds less than 25 kt. 

Monday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Seas locally approaching 5 ft. 

Tuesday: Low risk for Small Craft Advisory winds with areas of
gusts up to 30 kt. Areas of seas approaching 5 ft.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...None.

&&

$$

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

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