Lexington Weather

Current Conditions [‒] Current Conditions [+]

72.9°F Warmer than last hour.

22.7°C

Muggy

Overcast

This Afternoon: Hi 71 °F

Tonight: Lo 59 °F

Dew Point: 68.0°F Decreased 0.5°F since last hour.

Humidity: 85% Decreased 3.0% since last hour.

Air Quality Index: 24

Good

(Fine Particles)

Barometer: 29.71 in S

1006 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.38 in

Rain Wednesday: 1.51 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
This Afternoon, Tonight, & Friday through Wednesday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu Jul 30, 2026 2:29pm EDT

Overview:

- Drier Friday, though some scattered showers remain possible in the afternoon.

- Slow moving frontal boundary focuses soaking rain from showers and thunderstorms late Sunday night into Monday, perhaps lingering into early Tuesday along the southeast coast.

This Afternoon:

Chance Rain Showers

Hi 71 °F

A chance of rain showers and patchy fog. Mostly cloudy, with a high near 71. Northeast wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Tonight:

Chance Rain Showers then Patchy Fog

Lo 59 °F

A chance of rain showers before 8pm, then patchy fog. Mostly cloudy, with a low around 59. North wind 2 to 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Friday:

Patchy Fog then Slight Chance Rain Showers

Hi 81 °F

Patchy fog before 9am, then a slight chance of rain showers. Mostly sunny, with a high near 81. West wind around 5 mph. Chance of precipitation is 20%.

Friday Night:

Slight Chance Rain Showers then Mostly Clear

Lo 63 °F

A slight chance of rain showers before 8pm. Mostly clear, with a low around 63. Southwest wind around 5 mph. Chance of precipitation is 20%.

Saturday:

Mostly Sunny

Hi 85 °F

Mostly sunny, with a high near 85. Southwest wind 2 to 6 mph.

Saturday Night:

Mostly Cloudy

Lo 66 °F

Mostly cloudy, with a low around 66. South wind around 6 mph.

Sunday:

Partly Sunny

Hi 84 °F

Partly sunny, with a high near 84. South wind 6 to 10 mph.

Sunday Night:

Chance Rain Showers

Lo 67 °F

A chance of rain showers after 8pm. Mostly cloudy, with a low around 67. South wind 6 to 9 mph. Chance of precipitation is 40%.

Monday:

Chance Showers And T-Storms

Hi 83 °F

Monday: Chance Showers And Thunderstorms

A chance of rain showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Southwest wind 6 to 9 mph. Chance of precipitation is 50%.

Monday Night:

Chance Showers And T-Storms

Lo 64 °F

Monday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 64. West wind around 7 mph. Chance of precipitation is 40%.

Tuesday:

Sunny

Hi 85 °F

Sunny, with a high near 85. West wind around 7 mph.

Tuesday Night:

Partly Cloudy

Lo 64 °F

Partly cloudy, with a low around 64. Southwest wind around 6 mph.

Wednesday:

Slight Chance Rain Showers

Hi 85 °F

A slight chance of rain showers after 11am. Mostly sunny, with a high near 85. Southwest wind 3 to 7 mph.

Wednesday Night:

Slight Chance Rain Showers then Partly Cloudy

Lo 66 °F

A slight chance of rain showers before 11pm. Partly cloudy, with a low around 66. Southwest wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 3pm through Sat 2am

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu Jul 30, 2026 2:29pm EDT

3:00pm

Chance Rain Showers

70°F
Dew Pt 66°F
Wind from NE

NE 8 mph
Precip: 42%
Rain: 0.02 in

4:00pm

Chance Rain Showers

70°F
Dew Pt 66°F
Wind from NE

NE 8 mph
Precip: 41%
Rain: 0.01 in

5:00pm

Chance Rain Showers

69°F
Dew Pt 66°F
Wind from NE

NE 7 mph
Precip: 39%
Rain: 0.01 in

6:00pm

Chance Rain Showers

69°F
Dew Pt 65°F
Wind from NE

NE 7 mph
Precip: 32%
Rain: 0.01 in

7:00pm

Chance Rain Showers

69°F
Dew Pt 65°F
Wind from NE

NE 5 mph
Precip: 29%

8:00pm

Mostly Cloudy

67°F
Dew Pt 65°F
Wind from N

N 2 mph
Precip: 14%

9:00pm

Partly Cloudy

66°F
Dew Pt 64°F
Wind from NW

NW 2 mph
Precip: 10%

10:00pm

Partly Cloudy

65°F
Dew Pt 64°F
Wind from W

W 2 mph
Precip: 7%

11:00pm

Partly Cloudy

64°F
Dew Pt 64°F
Wind from W

W 3 mph
Precip: 6%

Fri
12:00am

Patchy Fog

64°F
Dew Pt 64°F
Wind from W

W 3 mph
Precip: 6%

Fri
1:00am

Patchy Fog

63°F
Dew Pt 63°F
Wind from W

W 3 mph
Precip: 6%

Fri
2:00am

Patchy Fog

62°F
Dew Pt 62°F
Wind from W

W 3 mph
Precip: 5%

Fri
3:00am

Patchy Fog

61°F
Dew Pt 61°F
Wind from W

W 3 mph
Precip: 3%

Fri
4:00am

Patchy Fog

61°F
Dew Pt 61°F
Wind from W

W 3 mph
Precip: 4%

Fri
5:00am

Patchy Fog

60°F
Dew Pt 60°F
Wind from NW

NW 3 mph
Precip: 4%

Fri
6:00am

Patchy Fog

61°F
Dew Pt 61°F
Wind from NW

NW 3 mph
Precip: 4%

Fri
7:00am

Patchy Fog

62°F
Dew Pt 62°F
Wind from NW

NW 2 mph
Precip: 4%

Fri
8:00am

Patchy Fog

65°F
Dew Pt 64°F
Wind from NW

NW 3 mph
Precip: 3%

Fri
9:00am

Mostly Sunny

70°F
Dew Pt 66°F
Wind from NW

NW 2 mph
Precip: 3%

Fri
10:00am

Mostly Sunny

73°F
Dew Pt 66°F
Wind from NW

NW 2 mph
Precip: 3%

Fri
11:00am

Mostly Sunny

75°F
Dew Pt 67°F
Wind from NW

NW 2 mph
Precip: 4%

Fri
12:00pm

Mostly Sunny

77°F
Dew Pt 67°F
Wind from W

W 3 mph
Precip: 4%

Fri
1:00pm

Mostly Sunny

79°F
Dew Pt 66°F
Wind from W

W 3 mph
Precip: 5%

Fri
2:00pm

Mostly Sunny

79°F
Dew Pt 67°F
Wind from W

W 3 mph
Precip: 12%

Fri
3:00pm

Slight Chance Rain Showers

80°F
Dew Pt 67°F
Heat Index: 82°F
Wind from W

W 3 mph
Precip: 18%

Fri
4:00pm

Slight Chance Rain Showers

79°F
Dew Pt 67°F
Wind from SW

SW 5 mph
Precip: 20%

Fri
5:00pm

Slight Chance Rain Showers

80°F
Dew Pt 67°F
Heat Index: 82°F
Wind from SW

SW 3 mph
Precip: 19%

Fri
6:00pm

Slight Chance Rain Showers

78°F
Dew Pt 67°F
Wind from SW

SW 5 mph
Precip: 19%

Fri
7:00pm

Slight Chance Rain Showers

76°F
Dew Pt 68°F
Wind from SW

SW 3 mph
Precip: 15%

Fri
8:00pm

Partly Cloudy

75°F
Dew Pt 68°F
Wind from SW

SW 3 mph
Precip: 9%

Fri
9:00pm

Mostly Clear

71°F
Dew Pt 67°F
Wind from W

W 3 mph
Precip: 3%

Fri
10:00pm

Mostly Clear

69°F
Dew Pt 67°F
Wind from SW

SW 3 mph
Precip: 1%

Fri
11:00pm

Mostly Clear

68°F
Dew Pt 67°F
Wind from SW

SW 3 mph
Precip: 0%

Sat
12:00am

Clear

67°F
Dew Pt 66°F
Wind from SW

SW 3 mph
Precip: 0%

Sat
1:00am

Clear

66°F
Dew Pt 66°F
Wind from W

W 3 mph
Precip: 0%

Sat
2:00am

Mostly Clear

65°F
Dew Pt 65°F
Wind from W

W 3 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 301934
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
334 PM EDT Thu Jul 30 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...

- Drier Friday, though some scattered showers remain possible in
  the afternoon. 

- Slow moving frontal boundary focuses soaking rain from showers
  and thunderstorms late Sunday night into Monday, perhaps
  lingering into early Tuesday along the southeast coast.

&&

.DISCUSSION...
KEY MESSAGE 1...Drier Friday, though some scattered showers remain 
possible in the afternoon.

The low responsible for yesterday's rain is shifting off to the 
northeast and is just offshore of Cape Cod as of the time of 
writing. Its associated trough will shift NE as well into Maritime 
Canada, allowing ridging aloft to make its way into the northeast. 
Onshore winds will continue through this afternoon, lending to a 
continued chance for some scattered showers over much of eastern MA 
into RI. Parts of western CT may also see some scattered showers 
through the evening. Continued moisture aloft and onshore flow will 
keep cloudier conditions in place into tonight as well, ushering in 
high pressure and more NW flow that will aid in clearing the region. 
High pressure returning will lend to the possibility of late 
morning/early afternoon seabreezes as well Friday as the 
aforementioned NW flow remains light. However, the chance for some 
scattered showers lingers in the afternoon. 925 mb temperatures 
around 18C will support highs making a return to the upper 70s and 
low 80s after being under a cooler airmass these last few days.

Light to calm SW winds Friday night in conjunction with clearer 
skies may increase the chances for radiational cooling. Given the 
recent rainfall, this all may increase chances for patchy fog 
development overnight into Saturday morning. 

KEY MESSAGE 2...Slow moving frontal boundary focuses soaking 
rain from showers and thunderstorms late Sunday night into 
Monday, perhaps lingering into early Tuesday along the southeast
coast. 

A slow-moving cold front working through NY/PA Sunday brings our 
next chance for rain for late Sunday evening into at least much of 
Monday. The main change in the past 24-hours worth of guidance is 
that the frontal boundary has slowed down about 12 hours compared to 
previous, in response to stronger meridional flow nearly parallel to 
the frontal boundary. That also leads to a influx of slightly higher 
precipitable water values which in some global model solutions are 
upwards of 2". Main risk this front will bring to Southern New 
England is another period of soaking downpours given the slow-moving 
frontal zone interacting with the highly moisture-rich airmass 
preceding it. It's still uncertain what the highest rain totals 
would look like and where they would fall, but with a few spot areas 
in interior Southern New England having registered quite a bit of 
rain in the last 48 hours, there would be some risk for localized 
street flooding but still view this risk as a lower chance. EPS/GEFS 
probabilities still show moderately high (40-60%) probs 24-hr rains 
over a half inch but low (< 30%) probs of 24-hr rains over an inch. 
This is something that will need to be monitored in later guidance. 
particularly if the frontal boundary slows down more. It now looks 
like the front won't sufficiently clear Southern New England until 
later Monday, and could still linger into Tuesday across southeast 
New England. It still doesn't look like thunderstorms will be 
capable of severe weather with a weakly-unstable, weak-lapse-rate 
and weak-shear convective setting. Southerly flow also increases 
over the waters, which could prompt marine headlines for our 
boaters/mariners.

&&

.AVIATION /19Z THURSDAY THROUGH TUESDAY/...
Forecaster Confidence Levels...

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

18z TAF Update:

Rest of Today...Moderate confidence. 

Not much has changed from the previous update. LIFR/IFR cigs 
with MVFR vsbys in areas of lingering light rain/drizzle and 
fog, only slowly improve to IFR/MVFR cigs and MVFR/VFR vsbys. A
low risk remains for a few heavy showers mainly over RI and SE
MA, particularly along the south coast, through this evening.
Breezy N to NE winds near the coastal areas, gusting
occasionally to 20 kt through the rest of this
afternoon/evening.

Tonight...Moderate confidence.

Widespread IFR and lower end MVFR with areas of fog developing.
N winds remaining generally below 10 kt. Some areas could see
improvement to VFR before 12z, but most won't see it until after
that.

Friday...High confidence. 

VFR. Light N winds with coastal sea breezes. Slight chance of
some scattered showers. 

Friday Night...High confidence.

VFR for most with chances for MVFR towards the Cape and Islands.
Light SW winds generally at or below 5 kt, going calm towards
the interior.

KBOS Terminal...High confidence in TAF. 

KBDL Terminal...Moderate confidence in TAF. Lingering showers
may impact the terminal this afternoon. Fog possible overnight
tonight included as TEMPO for the time being.

Outlook /Saturday through Tuesday/...

Saturday through Saturday Night: VFR. 

Sunday: VFR. Breezy. Slight chance SHRA.

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

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

Monday Night: VFR. Breezy. Chance SHRA.

Tuesday: VFR. 

&&

.MARINE...
Forecaster Confidence Levels...

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

Winds shift more N to even NW in spots tonight as the low
pressure just offshore continues shifting into the Maritimes.
Seas continue to diminish heading into tonight and Friday,
settling more to 2-4 ft. Any lingering rain showers through this
afternoon may continue to lower visibilities to 1-3NM
periodically.

Winds become lighter Friday and shift more to the SW heading
into Friday night. Fog expected to develop over much of the
southern waters and off the east coast of Cape Cod.

Outlook /Saturday through Tuesday/...

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

Saturday Night through Sunday: Winds less than 25 kt. 

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

Monday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Seas up to 5 ft. Chance of rain showers, slight
chance of thunderstorms. 

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

Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Slight chance of rain showers. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ250.

&&

$$

DISCUSSION...Loconto/Hrencecin
AVIATION...Loconto/Hrencecin/McMinn
MARINE...Loconto/Hrencecin

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