Lexington Weather

Current Conditions [‒] Current Conditions [+]

80.4°F Warmer than last hour.

26.9°C

Hot

Clear

This Afternoon: Hi 83 °F

Tonight: Lo 56 °F

Dew Point: 55.9°F Decreased 0.9°F since last hour.

Humidity: 43% Decreased 2.0% since last hour.

Air Quality Index: 35

Good

(Ozone)

Barometer: 30.11 in S

1020 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: 1 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 24, 2026 2:32pm EDT

Overview:

- Pleasant and dry conditions expected through Monday except for far eastern MA, the Cape and Islands. Elevated rip currents possible for east facing beaches Sunday.

- Periodic chances for showers & t-storms late Mon-Wed perhaps lingering into Thu...heavy rain/localized flash flood risk.

This Afternoon:

Sunny

Hi 83 °F

Sunny, with a high near 83. Southeast wind around 8 mph.

Tonight:

Mostly Clear

Lo 56 °F

Mostly clear, with a low around 56. South wind 1 to 8 mph.

Saturday:

Sunny

Hi 81 °F

Sunny, with a high near 81. Southeast wind 1 to 9 mph.

Saturday Night:

Mostly Clear

Lo 52 °F

Mostly clear, with a low around 52. East wind 1 to 8 mph.

Sunday:

Mostly Sunny

Hi 78 °F

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

Sunday Night:

Mostly Clear

Lo 55 °F

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

Monday:

Mostly Sunny

Hi 82 °F

Mostly sunny, with a high near 82. Northeast wind 2 to 8 mph.

Monday Night:

Partly Cloudy then Slight Chance Rain Showers

Lo 61 °F

A slight chance of rain showers after 1am. Partly cloudy, with a low around 61. South wind 3 to 8 mph.

Tuesday:

Showers And T-Storms Likely

Hi 81 °F

Tuesday: Showers And Thunderstorms Likely

A chance of rain showers before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 81. South wind 5 to 10 mph. Chance of precipitation is 70%.

Tuesday Night:

Showers And T-Storms Likely

Lo 65 °F

Tuesday Night: Showers And Thunderstorms Likely

Showers and thunderstorms likely. Mostly cloudy, with a low around 65. South wind 6 to 9 mph. Chance of precipitation is 70%.

Wednesday:

Showers And T-Storms Likely

Hi 79 °F

Wednesday: Showers And Thunderstorms Likely

A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 79. Southeast wind around 8 mph. Chance of precipitation is 60%.

Wednesday Night:

Chance Showers And T-Storms

Lo 60 °F

Wednesday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind around 7 mph. Chance of precipitation is 50%.

Thursday:

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. North wind around 7 mph. Chance of precipitation is 40%.

Thursday Night:

Chance Showers And T-Storms then Partly Cloudy

Lo 60 °F

Thursday Night: Chance Showers And Thunderstorms then Partly Cloudy

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 60. Northwest wind around 5 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 3pm through Sun 2am

Issued by:
National Weather Service Boston / Norton, MA
Updated Fri Jul 24, 2026 2:32pm EDT

3:00pm

Sunny

82°F
Dew Pt 54°F
Wind from S

S 6 mph
Precip: 0%

4:00pm

Sunny

82°F
Dew Pt 54°F
Wind from SE

SE 7 mph
Precip: 0%

5:00pm

Sunny

80°F
Dew Pt 54°F
Wind from SE

SE 8 mph
Precip: 0%

6:00pm

Mostly Clear

79°F
Dew Pt 55°F
Wind from SE

SE 8 mph
Precip: 0%

7:00pm

Mostly Clear

78°F
Dew Pt 55°F
Wind from SE

SE 8 mph
Precip: 0%

8:00pm

Mostly Clear

73°F
Dew Pt 56°F
Wind from S

S 8 mph
Precip: 0%

9:00pm

Clear

70°F
Dew Pt 56°F
Wind from S

S 7 mph
Precip: 0%

10:00pm

Clear

68°F
Dew Pt 55°F
Wind from S

S 6 mph
Precip: 0%

11:00pm

Mostly Clear

67°F
Dew Pt 55°F
Wind from S

S 5 mph
Precip: 0%

Sat
12:00am

Mostly Clear

66°F
Dew Pt 55°F
Wind from SW

SW 3 mph
Precip: 0%

Sat
1:00am

Clear

64°F
Dew Pt 55°F
Wind from SW

SW 3 mph
Precip: 0%

Sat
2:00am

Clear

63°F
Dew Pt 55°F
Wind from SW

SW 2 mph
Precip: 0%

Sat
3:00am

Clear

60°F
Dew Pt 54°F
Wind from SW

SW 2 mph
Precip: 0%

Sat
4:00am

Clear

60°F
Dew Pt 54°F
Wind from SW

SW 2 mph
Precip: 0%

Sat
5:00am

Clear

59°F
Dew Pt 54°F
Wind from SW

SW 1 mph
Precip: 0%

Sat
6:00am

Sunny

56°F
Dew Pt 54°F
Wind from S

S 1 mph
Precip: 0%

Sat
7:00am

Sunny

59°F
Dew Pt 56°F
Wind from S

S 1 mph
Precip: 0%

Sat
8:00am

Sunny

64°F
Dew Pt 57°F
Wind from S

S 1 mph
Precip: 0%

Sat
9:00am

Sunny

69°F
Dew Pt 57°F
Wind from SE

SE 2 mph
Precip: 0%

Sat
10:00am

Sunny

73°F
Dew Pt 56°F
Wind from E

E 3 mph
Precip: 0%

Sat
11:00am

Sunny

76°F
Dew Pt 56°F
Wind from E

E 5 mph
Precip: 0%

Sat
12:00pm

Sunny

78°F
Dew Pt 55°F
Wind from E

E 7 mph
Precip: 0%

Sat
1:00pm

Sunny

79°F
Dew Pt 54°F
Wind from E

E 8 mph
Precip: 0%

Sat
2:00pm

Sunny

79°F
Dew Pt 54°F
Wind from E

E 8 mph
Precip: 0%

Sat
3:00pm

Sunny

79°F
Dew Pt 53°F
Wind from E

E 9 mph
Precip: 0%

Sat
4:00pm

Sunny

78°F
Dew Pt 53°F
Wind from E

E 9 mph
Precip: 0%

Sat
5:00pm

Sunny

76°F
Dew Pt 52°F
Wind from E

E 8 mph
Precip: 0%

Sat
6:00pm

Mostly Clear

74°F
Dew Pt 52°F
Wind from E

E 8 mph
Precip: 0%

Sat
7:00pm

Clear

72°F
Dew Pt 51°F
Wind from E

E 7 mph
Precip: 0%

Sat
8:00pm

Mostly Clear

68°F
Dew Pt 53°F
Wind from E

E 5 mph
Precip: 0%

Sat
9:00pm

Clear

65°F
Dew Pt 53°F
Wind from E

E 3 mph
Precip: 0%

Sat
10:00pm

Mostly Clear

62°F
Dew Pt 54°F
Wind from E

E 3 mph
Precip: 0%

Sat
11:00pm

Clear

60°F
Dew Pt 54°F
Wind from E

E 2 mph
Precip: 0%

Sun
12:00am

Mostly Clear

59°F
Dew Pt 55°F
Wind from E

E 2 mph
Precip: 0%

Sun
1:00am

Mostly Clear

57°F
Dew Pt 55°F
Wind from NE

NE 1 mph
Precip: 0%

Sun
2:00am

Mostly Clear

55°F
Dew Pt 55°F
Wind from NE

NE 1 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 241840
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
240 PM EDT Fri Jul 24 2026

.WHAT HAS CHANGED...
The chance for rain for the Cape and Islands on Sunday has decreased 
since the last forecast update. Potential exists for heavy 
rainfall and perhaps even the risk of localized flash flooding 
beginning late Monday into the middle of next week.


&&

.KEY MESSAGES...

- Pleasant and dry conditions expected through Monday except 
  for far eastern MA, the Cape and Islands. Elevated rip 
  currents possible for east facing beaches Sunday. 

- Periodic chances for showers & t-storms late Mon-Wed perhaps 
  lingering into Thu...heavy rain/localized flash flood risk.


&&

.DISCUSSION...
KEY MESSAGE 1...Pleasant and dry conditions expected through Monday 
except for far eastern MA, the Cape and Islands. Elevated rip 
currents possible for east facing beaches Sunday. 

Another cool night ahead as clear skies support radiational cooling. 
Thus, opted to blend in the NBM 10th percentile and MOS guidance for 
lows tonight. Lows range from the upper 40s across elevated portions 
of the interior, to near 60 in urban and coastal areas. High 
pressure moves offshore Saturday switching winds to the E with low 
relative humidity values. Expecting another dry and pleasant day 
with Highs across the interior likely range in the low to mid 80s 
while the onshore flow will keep temperatures slightly cool (mid-
upper 70s) along the immediate eastern coastal areas.

By Sunday, heights fall as a weak trough approaches from the west. 
Most guidance shows a weak surface low tracking along a boundary 
well to the S of the region Sunday afternoon. Compared to the last 
forecast update, the NAM has backed off on the more robust POPs 
associated with a push of moisture across the Cape and E MA Sunday 
afternoon.  Model soundings still indicate a shallow layer of 
moisture in the lower levels supported by the easterly surface flow 
with drier mid-level air. This could potentially point to a layer of 
low clouds and even some patchy drizzle in areas of eastern MA 
developing through the day on Sunday. 

Outside of limited precip chances, there is higher confidence in a 
period of elevated rip current risk developing on Sunday with 
increasing easterly flow. Greatest threat for rough surf and rip 
currents will likely be across much of the east-facing portion of 
the Cape, MA, and the Islands. 

KEY MESSAGE 2...Periodic chances for showers & t-storms late Mon-Wed 
perhaps lingering into Thu...heavy rain/localized flash flood risk.

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 
into Thu if the shortwave is slower to depart. While there is quite 
a bit of spread in regards to timing and track...the ECMWF/GFS/UKMET 
indicating the potential for an approximately 995 mb surface low. 
That is pretty anomalous for July standards and the EPS ensemble 
situational awareness table indicates its strength outside the 
models climatology field. Pwats are also indicated to increase to 1+ 
standard deviation above normal on the order of 1.5 to 2". When you 
combined that with the potential for a 995 low pressure system...the 
potential is certainly there for a heavy rain/localized flash flood 
risk. And that may not even end up in our region depending on the 
track...But it certainly bears watching for the mid-Atlantic and 
northeast states. 

We also should mention that the late Mon through Wed timeframe will 
not be a complete washout. Timing obviously uncertain at this 
point...But afternoons/evenings are favored given diurnal 
instability to work with as well. 

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  and precipitation chances for the 
middle of next week. 


&&

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

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

18z TAF Update:

Tonight...High Confidence.

VFR conditions tonight. Sea breezes kick out 00-02Z shifting 
winds back to light S/SSW. 

Saturday...High Confidence. 

VFR. Easterly winds for all terminals. Less than 10 kts for the
interior and 8-12 kts for the coastal areas. 

KBOS Terminal...High confidence in TAF. Sea breeze likely
develops 14-16Z and kicks back out to S/SSW 01-03Z. 

KBDL Terminal...High confidence in TAF.

Outlook /Saturday Night through Wednesday/...

Sunday: VFR. Breezy. 

Sunday Night: VFR. 

Monday: VFR. Breezy. 

Monday Night: VFR. Chance SHRA, slight chance TSRA.

Tuesday through Tuesday Night: Mainly VFR, with local MVFR
possible. Breezy. SHRA likely, slight chance TSRA.

Wednesday: Mainly VFR, with local IFR possible. Breezy. 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 Saturday...High confidence.

Light winds and seas 1-4 ft Saturday. Increasing winds and seas
Saturday night and Sunday with a low chance of SCA conditions
across the eastern outer waters Sunday. 

Moderate risk for rip currents over the weekend.

Outlook /Saturday Night through Wednesday/...

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

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

Monday through Monday Night: Winds less than 25 kt. 

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

Tuesday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Areas of seas approaching 5 ft. Rain showers
likely, slight chance of thunderstorms. 

Wednesday: Winds less than 25 kt. Seas up to 5 ft. Chance of
rain showers, slight chance of thunderstorms. 

&&

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

&&

$$

DISCUSSION...Frank/FT
AVIATION...Mensch/FT
MARINE...FT

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