Lexington Weather

Current Conditions [‒] Current Conditions [+]

76.3°F Warmer than last hour.

24.6°C

Warm

Few Clouds

This Afternoon: Hi 79 °F

Tonight: Lo 57 °F

Dew Point: 53.4°F Increased 0.5°F since last hour .

Humidity: 45%

Air Quality Index: 33

Good

(Fine Particles)

Barometer: 29.71 in S

1006 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Saturday: 0.23 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 1 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sun Jul 19, 2026 2:32pm EDT

Overview:

- Breezy and comfortable this afternoon and Monday. A high risk of rip currents continues through this evening on south-facing beaches.

- Periods of rain, perhaps heavy at times possible later Tuesday into Wednesday. Higher confidence in a period of impactful marine weather during that timeframe.

- Drying out Thursday. Mainly dry through next weekend. Near to slightly below normal temperatures.

This Afternoon:

Sunny

Hi 79 °F

Sunny, with a high near 79. Northwest wind around 10 mph.

Tonight:

Clear

Lo 57 °F

Clear, with a low around 57. Northwest wind 3 to 8 mph.

Monday:

Sunny

Hi 83 °F

Sunny, with a high near 83. West wind around 6 mph.

Monday Night:

Partly Cloudy

Lo 61 °F

Partly cloudy, with a low around 61. Southwest wind around 6 mph.

Tuesday:

Mostly Cloudy then Slight Chance Showers And T-Storms

Hi 81 °F

Tuesday: Mostly Cloudy then Slight Chance Showers And Thunderstorms

A slight chance of rain showers between 4pm and 5pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind 5 to 12 mph. Chance of precipitation is 20%.

Tuesday Night:

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

Lo 66 °F

Tuesday Night: Chance Showers And Thunderstorms then Showers And Thunderstorms

A chance of showers and thunderstorms before 8pm, then showers and thunderstorms. Cloudy, with a low around 66. South wind around 9 mph. Chance of precipitation is 90%.

Wednesday:

Showers And T-Storms

Hi 84 °F

Showers and thunderstorms. Mostly cloudy, with a high near 84. Southwest wind 8 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

Wednesday Night:

Showers And T-Storms

Lo 61 °F

Wednesday Night: Showers And Thunderstorms

Showers and thunderstorms. Mostly cloudy, with a low around 61. West wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

Thursday:

Slight Chance Rain Showers

Hi 80 °F

A slight chance of rain showers before 2pm. Mostly sunny, with a high near 80. North wind around 8 mph.

Thursday Night:

Mostly Clear

Lo 59 °F

Mostly clear, with a low around 59. Southwest wind 2 to 6 mph.

Friday:

Sunny

Hi 82 °F

Sunny, with a high near 82. Northeast wind 2 to 6 mph.

Friday Night:

Mostly Clear

Lo 63 °F

Mostly clear, with a low around 63. South wind around 5 mph.

Saturday:

Sunny

Hi 85 °F

Sunny, with a high near 85. West wind 2 to 6 mph.

Saturday Night:

Partly Cloudy

Lo 63 °F

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

FULL FORECAST

NWS Hourly Forecast -
Today 3pm through Tue 2am

Issued by:
National Weather Service Boston / Norton, MA
Updated Sun Jul 19, 2026 2:32pm EDT

3:00pm

Sunny

77°F
Dew Pt 55°F
Wind from NW

NW 10 mph
Precip: 0%

4:00pm

Sunny

77°F
Dew Pt 54°F
Wind from NW

NW 9 mph
Precip: 0%

5:00pm

Sunny

77°F
Dew Pt 52°F
Wind from NW

NW 9 mph
Precip: 0%

6:00pm

Clear

76°F
Dew Pt 52°F
Wind from NW

NW 8 mph
Precip: 0%

7:00pm

Clear

74°F
Dew Pt 53°F
Wind from NW

NW 6 mph
Precip: 0%

8:00pm

Clear

71°F
Dew Pt 53°F
Wind from NW

NW 5 mph
Precip: 0%

9:00pm

Clear

68°F
Dew Pt 53°F
Wind from NW

NW 5 mph
Precip: 0%

10:00pm

Clear

66°F
Dew Pt 52°F
Wind from NW

NW 5 mph
Precip: 0%

11:00pm

Clear

65°F
Dew Pt 51°F
Wind from NW

NW 5 mph
Precip: 0%

Mon
12:00am

Clear

63°F
Dew Pt 51°F
Wind from NW

NW 3 mph
Precip: 0%

Mon
1:00am

Clear

62°F
Dew Pt 51°F
Wind from W

W 3 mph
Precip: 0%

Mon
2:00am

Mostly Clear

60°F
Dew Pt 51°F
Wind from W

W 3 mph
Precip: 0%

Mon
3:00am

Mostly Clear

59°F
Dew Pt 51°F
Wind from W

W 3 mph
Precip: 0%

Mon
4:00am

Mostly Clear

58°F
Dew Pt 50°F
Wind from W

W 5 mph
Precip: 0%

Mon
5:00am

Mostly Clear

57°F
Dew Pt 50°F
Wind from W

W 5 mph
Precip: 0%

Mon
6:00am

Sunny

58°F
Dew Pt 51°F
Wind from W

W 5 mph
Precip: 0%

Mon
7:00am

Sunny

60°F
Dew Pt 53°F
Wind from W

W 5 mph
Precip: 0%

Mon
8:00am

Sunny

64°F
Dew Pt 55°F
Wind from W

W 5 mph
Precip: 0%

Mon
9:00am

Sunny

68°F
Dew Pt 55°F
Wind from NW

NW 5 mph
Precip: 0%

Mon
10:00am

Sunny

73°F
Dew Pt 54°F
Wind from W

W 5 mph
Precip: 0%

Mon
11:00am

Sunny

76°F
Dew Pt 53°F
Wind from W

W 5 mph
Precip: 0%

Mon
12:00pm

Sunny

78°F
Dew Pt 53°F
Wind from W

W 5 mph
Precip: 0%

Mon
1:00pm

Sunny

80°F
Dew Pt 53°F
Wind from W

W 6 mph
Precip: 0%

Mon
2:00pm

Sunny

81°F
Dew Pt 53°F
Wind from W

W 6 mph
Precip: 0%

Mon
3:00pm

Sunny

81°F
Dew Pt 54°F
Wind from W

W 6 mph
Precip: 0%

Mon
4:00pm

Sunny

83°F
Dew Pt 54°F
Wind from SW

SW 6 mph
Precip: 0%

Mon
5:00pm

Sunny

81°F
Dew Pt 54°F
Wind from SW

SW 6 mph
Precip: 0%

Mon
6:00pm

Mostly Clear

81°F
Dew Pt 55°F
Wind from SW

SW 6 mph
Precip: 0%

Mon
7:00pm

Mostly Clear

79°F
Dew Pt 56°F
Wind from SW

SW 5 mph
Precip: 0%

Mon
8:00pm

Mostly Clear

74°F
Dew Pt 57°F
Wind from S

S 5 mph
Precip: 0%

Mon
9:00pm

Partly Cloudy

72°F
Dew Pt 57°F
Wind from S

S 5 mph
Precip: 0%

Mon
10:00pm

Partly Cloudy

70°F
Dew Pt 57°F
Wind from SW

SW 6 mph
Precip: 0%

Mon
11:00pm

Partly Cloudy

68°F
Dew Pt 57°F
Wind from SW

SW 6 mph
Precip: 0%

Tue
12:00am

Partly Cloudy

67°F
Dew Pt 57°F
Wind from S

S 6 mph
Precip: 0%

Tue
1:00am

Mostly Clear

65°F
Dew Pt 57°F
Wind from SW

SW 5 mph
Precip: 0%

Tue
2:00am

Partly Cloudy

63°F
Dew Pt 57°F
Wind from S

S 5 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 191805
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
205 PM EDT Sun Jul 19 2026

.WHAT HAS CHANGED...
No changes were made during this forecast update.

&&

.KEY MESSAGES...

- Breezy and comfortable this afternoon and Monday. A high risk of 
rip currents continues through this evening on south-facing beaches. 

- Periods of rain, perhaps heavy at times possible later Tuesday 
into Wednesday. Higher confidence in a period of impactful marine 
weather during that timeframe. 

- Drying out Thursday. Mainly dry through next weekend. Near to
  slightly below normal temperatures.



&&

.DISCUSSION...
KEY MESSAGE 1...Breezy and comfortable this afternoon and Monday. A 
high risk of rip currents continues through this evening on south-
facing beaches. 

Full sun today as lingering smoke and haze finally pushes south of 
the region under deep northwest flow. Seeing much better air quality 
this afternoon as most of the lingering smoke remains aloft compared 
to yesterday. PM2.5 values remain elevated, generally in the 50-70 
ug/m3 range, which is still impactful for sensitive groups. Much 
cooler aloft today behind a strong cold front with 850 mb temps in 
the upper single digits to low teens. Should still be quite mild 
with mid-July sun angle and downsloping supporting highs in the 
upper 70s to lower/mid 80s. Other story today is the continued risk 
for rip currents along the south coast. Buoys show widespread swells 
between 4 and 7 feet from the waters S of Rhode Island to the 
entrance of the Buzzards Bay. Elevated swells continue through the 
rest of the day and help to keep the rip current risk high from 
Rhode Island to the Cape and Islands this afternoon and evening. 
Elsewhere, there is a moderate risk for rip currents That's the only 
fly in the ointment though. Not sure if today qualifies as the pick 
of summer 2026, but it's certainly in the running. Enjoy! 

It's a cool and pleasant night tonight as high pressure crests over 
the region. Mainly clear skies allow lows to cool into the mid 50s 
for most locations with strong radiational cooling. Weak southwest 
return flow becomes established on Monday as high pressure pulls 
offshore. The weak advection warms 850 mb temps to +11-12C 
translating to temperatures about 3-5 degrees warmer than today. 


KEY MESSAGE 2...Periods of rain, perhaps heavy at times possible 
later Tuesday into Wednesday. Higher confidence in a period of 
impactful marine weather during that timeframe. 

Confidence is increasing in another period of unsettled weather and 
even the potential for areas of heavy rainfall late Tuesday into 
Wednesday. A strong disturbance located in the left-exit region of a 
moderately strong (100-110 kt) jet approaches the region from the 
upper Midwest Tuesday afternoon. Closer to the surface, strong low-
level southerly flow advects copious amounts of tropical moisture 
into the region. By Tuesday afternoon, guidance shows PWAT values 
increasing to >2". Still seeing a signal for strong low-level 
moisture convergence over the region Tuesday and Tuesday night on 
global guidance suggesting the possibility for periods of heavy 
rainfall. Could even see some thunderstorms with elevated K-index 
values, though surface instability will likely be limited by dense 
cloud cover. NBM QPF probabilities show mean 24 hour rainfall totals 
of 1.25-1.75" with the highest probs of 24-hour total rains of an 
inch or greater over southeast New England, and even low to moderate 
(30-50%) probs of 2-inch 24 hr totals. Wind fields also improve too, 
but it's debatable if that translates to severe weather, as most of 
the machine learning progs don't offer much potential. By Wed, more 
instability type showers and storms are favored underneath the upper 
trough before it begins to pull away later Wed/Wed night.

Will also make a mention for mariners/beachgoers that southwest
winds pick up substantially Tue night and Wed; ensemble 34-kt 
wind progs out on the waters are in the 40-70% range so it's 
very possible gale watches could be needed in the coming days. 
Seas expected to build and become rough, reaching upwards of 12 
ft on the southern outer waters, so that could support a need 
for high surf headlines for south-facing beaches in the coming 
days too. 

KEY MESSAGE 3...Drying out Thursday. Mainly dry through next 
weekend. Near to slightly below normal temperatures.

Latest guidance suite was in reasonable agreement with the 
evolution of the overall synoptic pattern next week. That said, the 
usual timing and magnitude differences are present, leading to an 
average confidence in the forecast details.

A cold front may be lingering near the coast in the morning, before 
finally getting push well out to sea by a high pressure over the 
Midwest. This high pressure should then arrive by Friday and remain 
overhead through next weekend.

Any lingering morning showers Thursday should be offshore by 
afternoon. The dry conditions should prevail most of the time 
through next weekend. Not anticipating it to be overly humid, with 
temperatures near to slightly below normal.

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
Forecaster Confidence Levels...

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

Rest of Today: High confidence.

VFR. NW winds 10-14 kt with gusts 20-25 kt, gradually easing 
late in the day. Mostly SKC outside of lingering haze across the
southern terminals. Any lingering smoke is out of the area by
00z. 

Tonight: High confidence. 

Mainly VFR; can't rule out patchy fog/mist toward daybreak given
recent rains, but uncertain on development. NW winds 7-10 kt
early ease to light WSW.

Monday: Medium confidence. 

VFR. WSW winds increase to 5-10 kt; low confidence in a 
seabreeze at BOS late morning to mid afternoon but it could be 
short- lived. 

KBOS Terminal...High confidence in TAF. 

KBDL Terminal...High confidence in TAF.

Outlook /Tuesday through Friday/...

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

Tuesday Night: MVFR/IFR conditions possible. Breezy. SHRA,
chance TSRA.

Wednesday: Mainly VFR, with local MVFR possible. Windy with
gusts up to 30 kt. SHRA likely, chance TSRA.

Wednesday Night: VFR. Windy with local gusts up to 30 kt.
Chance SHRA.

Thursday through Friday: VFR. 

&&

.MARINE...
Forecaster Confidence Levels...

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

SCAs continue for the outer waters today as winds shift to NW 
with gusts in the 25 to possibly 30 kt range early, but then 
gradually decrease into the afternoon. Seas 4-7 ft which will be
slowly decreasing this evening into the overnight. 

NW winds decrease tonight to 10 kt or less. Good boating weather
Monday as winds turn SW around 10-15 kt.

Outlook /Tuesday through Friday/...

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

Tuesday Night: Moderate risk for Small Craft Advisory winds
with gusts up to 30 kt. Areas of rough seas. Rain showers,
chance of thunderstorms. 

Wednesday: Low risk for gale force winds with gusts up to
35 kt. Rough seas up to 14 ft. Rain showers likely, chance of
thunderstorms. 

Wednesday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Rough seas up to 14 ft. Chance of rain
showers, slight chance of thunderstorms. 

Thursday: Winds less than 25 kt. Rough seas up to 10 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. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...High Risk for Rip Currents until 8 PM EDT this evening for MAZ020-
     022>024.
RI...High Risk for Rip Currents until 8 PM EDT this evening for 
     RIZ006>008.
MARINE...Small Craft Advisory until 8 PM EDT this evening for 
     ANZ254>256.

&&

$$

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

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