Lexington Weather

Current Conditions [‒] Current Conditions [+]

75.4°F Colder than last hour.

24.1°C

Muggy

Few Clouds

This Afternoon: Hi 78 °F

Tonight: Lo 59 °F

Dew Point: 61.5°F Increased 1.8°F since last hour .

Humidity: 62% Increased 5.0% since last hour.

Air Quality Index: 29

Good

(Fine Particles)

Barometer: 29.99 in S

1016 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: 2 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 Jun 22, 2026 12:01pm EDT

Overview:

- Periods of heavy rain possible later today into early Tuesday.

- Drier air with seasonable temperatures expected midweek. Chances for rain return for the end of this week.

This Afternoon:

Rain Showers Likely

Hi 78 °F

Rain showers likely after 2pm. Mostly cloudy, with a high near 78. South wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

Tonight:

Patchy Fog

Lo 59 °F

Rain showers before 7pm, then rain showers and patchy fog between 7pm and 8pm, then patchy fog and showers and thunderstorms. Cloudy, with a low around 59. Southeast wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Tuesday:

Patchy Fog

Hi 75 °F

Patchy fog and showers and thunderstorms before 8am, then patchy fog and showers and thunderstorms. Cloudy, with a high near 75. West wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday Night:

Chance Rain Showers then Mostly Cloudy

Lo 59 °F

A chance of rain showers before 8pm. Mostly cloudy, with a low around 59. Northwest wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Wednesday:

Sunny

Hi 83 °F

Sunny, with a high near 83. Northwest wind 6 to 9 mph.

Wednesday Night:

Mostly Clear

Lo 61 °F

Mostly clear, with a low around 61. Northwest wind 2 to 8 mph.

Thursday:

Mostly Sunny

Hi 85 °F

Mostly sunny, with a high near 85. South wind 1 to 7 mph.

Thursday Night:

Slight Chance Showers And T-Storms

Lo 63 °F

Thursday Night: Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms between 11pm and 2am, then showers and thunderstorms likely. Mostly cloudy, with a low around 63. South wind around 6 mph. Chance of precipitation is 60%.

Friday:

Showers And T-Storms Likely

Hi 83 °F

Friday: Showers And Thunderstorms Likely

Showers and thunderstorms likely. Partly sunny, with a high near 83. Southwest wind 5 to 9 mph. Chance of precipitation is 60%.

Friday Night:

Chance Showers And T-Storms

Lo 64 °F

Friday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Southwest wind 3 to 8 mph. Chance of precipitation is 50%.

Saturday:

Chance Rain Showers

Hi 84 °F

A chance of rain showers. Partly sunny, with a high near 84. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.

Saturday Night:

Chance Rain Showers

Lo 64 °F

A chance of rain showers before 2am. Partly cloudy, with a low around 64. Southwest wind around 6 mph. Chance of precipitation is 30%.

Sunday:

Mostly Sunny then Slight Chance Rain Showers

Hi 86 °F

A slight chance of rain showers after 4pm. Mostly sunny, with a high near 86. North wind 3 to 7 mph.

Sunday Night:

Partly Cloudy

Lo 65 °F

Partly cloudy, with a low around 65. Northwest wind around 5 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 12pm through Tue 11pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Mon Jun 22, 2026 12:01pm EDT

12:00pm

Mostly Cloudy

77°F
Dew Pt 58°F
Wind from SW

SW 5 mph
Precip: 7%

1:00pm

Mostly Cloudy

77°F
Dew Pt 59°F
Wind from SW

SW 5 mph
Precip: 15%

2:00pm

Chance Rain Showers

77°F
Dew Pt 60°F
Wind from SW

SW 6 mph
Precip: 23%
Rain: 0.01 in

3:00pm

Chance Rain Showers

77°F
Dew Pt 61°F
Wind from S

S 6 mph
Precip: 32%
Rain: 0.02 in

4:00pm

Rain Showers Likely

74°F
Dew Pt 62°F
Wind from SE

SE 6 mph
Precip: 50%
Rain: 0.04 in

5:00pm

Rain Showers Likely

74°F
Dew Pt 62°F
Wind from SW

SW 6 mph
Precip: 57%
Rain: 0.05 in

6:00pm

Rain Showers

73°F
Dew Pt 62°F
Wind from S

S 7 mph
Precip: 71%
Rain: 0.05 in

7:00pm

Rain Showers

70°F
Dew Pt 61°F
Wind from SE

SE 7 mph
Precip: 85%
Rain: 0.05 in

8:00pm

Patchy Fog

68°F
Dew Pt 62°F
Wind from SE

SE 7 mph
Precip: 89%
Rain: 0.05 in

9:00pm

Patchy Fog

66°F
Dew Pt 62°F
Wind from SE

SE 7 mph
Precip: 91%
Rain: 0.05 in

10:00pm

Patchy Fog

66°F
Dew Pt 63°F
Wind from SE

SE 7 mph
Precip: 88%
Rain: 0.05 in

11:00pm

Patchy Fog

66°F
Dew Pt 64°F
Wind from SE

SE 7 mph
Precip: 73%
Rain: 0.05 in

Tue
12:00am

Patchy Fog

66°F
Dew Pt 64°F
Wind from SE

SE 8 mph
Precip: 88%
Rain: 0.05 in

Tue
1:00am

Patchy Fog

66°F
Dew Pt 65°F
Wind from S

S 8 mph
Precip: 93%
Rain: 0.05 in

Tue
2:00am

Patchy Fog

65°F
Dew Pt 65°F
Wind from S

S 8 mph
Precip: 92%
Rain: 0.07 in

Tue
3:00am

Patchy Fog

65°F
Dew Pt 65°F
Wind from S

S 7 mph
Precip: 92%
Rain: 0.07 in

Tue
4:00am

Patchy Fog

64°F
Dew Pt 64°F
Wind from S

S 7 mph
Precip: 90%
Rain: 0.07 in

Tue
5:00am

Patchy Fog

62°F
Dew Pt 62°F
Wind from S

S 7 mph
Precip: 91%
Rain: 0.07 in

Tue
6:00am

Patchy Fog

64°F
Dew Pt 64°F
Wind from S

S 6 mph
Precip: 91%
Rain: 0.07 in

Tue
7:00am

Patchy Fog

64°F
Dew Pt 64°F
Wind from S

S 6 mph
Precip: 84%
Rain: 0.06 in

Tue
8:00am

Patchy Fog

66°F
Dew Pt 66°F
Wind from S

S 6 mph
Precip: 74%
Rain: 0.03 in

Tue
9:00am

Patchy Fog

68°F
Dew Pt 68°F
Wind from SW

SW 6 mph
Precip: 70%
Rain: 0.03 in

Tue
10:00am

Patchy Fog

70°F
Dew Pt 69°F
Wind from W

W 7 mph
Precip: 71%
Rain: 0.02 in

Tue
11:00am

Rain Showers Likely

71°F
Dew Pt 70°F
Wind from NW

NW 7 mph
Precip: 66%
Rain: 0.02 in

Tue
12:00pm

Rain Showers Likely

73°F
Dew Pt 69°F
Wind from NW

NW 7 mph
Precip: 55%
Rain: 0.01 in

Tue
1:00pm

Chance Rain Showers

74°F
Dew Pt 69°F
Wind from NW

NW 7 mph
Precip: 46%
Rain: 0.02 in

Tue
2:00pm

Chance Rain Showers

75°F
Dew Pt 69°F
Wind from NW

NW 8 mph
Precip: 40%
Rain: 0.07 in

Tue
3:00pm

Chance Rain Showers

76°F
Dew Pt 68°F
Wind from NW

NW 8 mph
Precip: 37%
Rain: 0.07 in

Tue
4:00pm

Chance Rain Showers

75°F
Dew Pt 67°F
Wind from NW

NW 8 mph
Precip: 35%
Rain: 0.04 in

Tue
5:00pm

Slight Chance Rain Showers

76°F
Dew Pt 66°F
Wind from NW

NW 7 mph
Precip: 23%
Rain: 0.02 in

Tue
6:00pm

Chance Rain Showers

75°F
Dew Pt 66°F
Wind from NW

NW 7 mph
Precip: 25%
Rain: 0.01 in

Tue
7:00pm

Slight Chance Rain Showers

74°F
Dew Pt 65°F
Wind from NW

NW 5 mph
Precip: 20%

Tue
8:00pm

Mostly Cloudy

72°F
Dew Pt 64°F
Wind from NW

NW 5 mph
Precip: 13%

Tue
9:00pm

Partly Cloudy

69°F
Dew Pt 63°F
Wind from NW

NW 5 mph
Precip: 2%

Tue
10:00pm

Mostly Cloudy

68°F
Dew Pt 62°F
Wind from NW

NW 5 mph
Precip: 1%
Rain: 0.01 in

Tue
11:00pm

Mostly Cloudy

67°F
Dew Pt 60°F
Wind from NW

NW 6 mph
Precip: 1%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 221122
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
722 AM EDT Mon Jun 22 2026

.WHAT HAS CHANGED...
No changes to the forecast at this time.

&&

.KEY MESSAGES...

- Periods of heavy rain possible later today into early 
  Tuesday.

- Drier air with seasonable temperatures expected midweek.
  Chances for rain return for the end of this week.

&&

.DISCUSSION...
KEY MESSAGE 1...Periods of heavy rain possible later today into
early Tuesday.

Have high confidence in a widespread, soaking rain across our
region later today into Tuesday morning. Even at this time
range, there remain different ideas on where the bands of
heaviest rainfall will be. Currently have the greatest
confidence across northern CT and western and central MA, where
terrain will assist the dynamic lifting processes.

Thinking total rainfall of 1.0-1.5 inches is the most likely
outcome. The probability for 2+ inches of rainfall remains 
about 30 to 40 percent. Not expecting flooding, as our region
remains abnormally dry. Flash flood guidance is 2-3 inches in 
an hour, which we should not achieve. Overall, this is looking 
like a beneficial rainfall for southern New England. 

We should dry out from west to east as a low pressure along the
south coast of New England moves offshore Tuesday.

KEY MESSAGE 2...Drier air with seasonable temperatures expected
midweek. Chances for rain return for the end of this week.

Surface high pressure will keep the weather dry through the 
middle of this week, after the rain comes to an end on Tuesday.

A low pressure system is expected to move into the Great Lakes 
by Thursday, then track into southeastern Canada by the end of 
this week. In addition, a weak shortwave trough should pass 
across the northeast. This combination will bring the next 
rainfall chances, beginning some time Thursday night into  
Friday morning. Isolated to scattered thunderstorms are possible
during this time as well, especially Friday afternoon, with the
highest chances across western MA.

The GEFS has low, but non-zero, probability for severe storms 
Friday, as well as some of the other ensemble and machine 
learning guidance. However, this probability varies significantly
amongst the guidance still. Given this spread, and how far out 
in the forecast it is, confidence on overall severe potential
remains low.

&&

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

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

12Z Update

Today: High confidence overall, though trending moderate for 
this afternoon due to timing of rainfall.

VFR most of the day, though clouds thicken up and lower through
the day. Sub-VFR ceilings and arrival of light -SHRA unlikely to
be sooner than 20z across western New England, and not until 
22-00z at earliest for central/eastern TAFs. Any -SHRA during 
this period should be light. W winds under 10 kt, then shift to 
S/SE then E late under 10 kt. 

Tonight: Moderate confidence. 

Conditions deteriorate to widespread MVFR-IFR. Steadier rainfall
arrives. But the timing and location of the eventual moderate 
to heavy rainfall remains unclear. The earliest reasonable start 
time is 01-03z across western New England, and after 03-05z for
the eastern TAFs. TSRA also possible.

Tuesday...High confidence in trends. Moderate confidence in
timing.

IFR early, improving to VFR from W to E during the afternoon as
rainfall ends. MVFR may linger across the Cape and islands
through late afternoon.


KBOS Terminal...High confidence in TAF trends. Moderate
confidence in timing.
 
KBDL Terminal...High confidence in TAF trends. Moderate
confidence in timing.

Outlook /Tuesday Night through Friday/...

Tuesday Night through Thursday: VFR. 

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

Friday: Mainly VFR, with local MVFR possible. Breezy. SHRA
likely, slight chance TSRA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Tuesday...High confidence.

A Small Craft Advisory continues for the outer coastal waters 
south of Block Island and east to Nantucket for this afternoon 
into Tuesday morning. Potential for gusts to 25 kt across some
of the waters across the Cape and islands, as well as the
eastern outer coastal waters. However, confidence is not high
enough yet that it will persist long enough to warrant expanding
the Advisory. This will need to be monitored with later
forecasts.

Rain arrives across the waters tonight, before finally moving
off to the east some time Tuesday afternoon into Tuesday
evening. Moderate to heavy rainfall at times expected, 
resulting in poor visibility less than 1 mile at times.

Outlook /Tuesday Night through Friday/...

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

Wednesday: Winds less than 25 kt. Areas of seas approaching
5 ft. 

Wednesday Night through Thursday: Winds less than 25 kt. 

Thursday Night: Winds less than 25 kt. Slight chance of rain
showers. 

Friday: Winds less than 25 kt. Chance of rain showers, slight
chance of thunderstorms.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 4 PM this afternoon to 8 AM EDT 
     Tuesday for ANZ255-256.

&&

$$

DISCUSSION...Belk
AVIATION...Belk/RM
MARINE...Belk

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