Lexington Weather

Current Conditions [‒] Current Conditions [+]

45.3°F Colder than last hour.

7.4°C

Chilly

Clear

Tonight: Lo 34 °F

Wednesday: Hi 65 °F

Dew Point: 36.5°F Increased 0.2°F since last hour .

Humidity: 71% Increased 2.0% since last hour.

Air Quality Index: 15

Good

(Ozone)

Barometer: 30.01 in S

1016 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Tuesday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Tonight, Wednesday, & Wednesday Night through Tuesday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Tue Oct 6, 2026 2:29pm EDT

Overview:

- Dry & chilly tonight with widespread frost outside the urban centers. Sunny & becoming breezy Wed with milder high temps reaching well into the 60s. Much milder Wed night with S-SW winds holding low temps mainly in the upper 40s-lower 50s.

- Very low chance of a spot shower Thursday, otherwise a mild day. An early look at the holiday weekend favors dry weather, though late Sunday into Monday bears watching for rain.

Tonight:

Clear then Areas Of Frost

Lo 34 °F

Areas of frost after 4am. Clear, with a low around 34. West wind 1 to 10 mph.

Wednesday:

Areas Of Frost then Sunny

Hi 65 °F

Areas of frost before 8am. Sunny, with a high near 65. Southwest wind 1 to 13 mph, with gusts as high as 23 mph.

Wednesday Night:

Partly Cloudy

Lo 51 °F

Partly cloudy, with a low around 51. Southwest wind 8 to 12 mph.

Thursday:

Slight Chance Rain Showers

Hi 72 °F

A slight chance of rain showers after 10am. Mostly sunny, with a high near 72. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Thursday Night:

Slight Chance Rain Showers then Mostly Clear

Lo 48 °F

A slight chance of rain showers before 7pm. Mostly clear, with a low around 48. West wind around 7 mph. Chance of precipitation is 20%.

Friday:

Sunny

Hi 65 °F

Sunny, with a high near 65. West wind 6 to 12 mph, with gusts as high as 22 mph.

Friday Night:

Mostly Clear

Lo 44 °F

Mostly clear, with a low around 44. West wind 5 to 8 mph.

Saturday:

Sunny

Hi 67 °F

Sunny, with a high near 67. West wind around 7 mph.

Saturday Night:

Mostly Clear

Lo 48 °F

Mostly clear, with a low around 48. Southwest wind around 5 mph.

Sunday:

Mostly Sunny

Hi 70 °F

Mostly sunny, with a high near 70. Southwest wind 5 to 10 mph, with gusts as high as 22 mph.

Sunday Night:

Mostly Cloudy then Chance Rain Showers

Lo 56 °F

A chance of rain showers after 1am. Mostly cloudy, with a low around 56. Southwest wind around 9 mph. Chance of precipitation is 30%.

Columbus Day:

Chance Rain Showers

Hi 69 °F

A chance of rain showers. Partly sunny, with a high near 69. West wind around 9 mph. Chance of precipitation is 40%.

Monday Night:

Chance Rain Showers

Lo 53 °F

A chance of rain showers. Mostly cloudy, with a low around 53. North wind around 8 mph. Chance of precipitation is 30%.

Tuesday:

Partly Sunny then Slight Chance Rain Showers

Hi 66 °F

A slight chance of rain showers after 3pm. Partly sunny, with a high near 66. North wind around 8 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 1am through Thu 12pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Tue Oct 6, 2026 2:29pm EDT

1:00am

Clear

41°F
Dew Pt 29°F
Wind Chill: 39°F
Wind from W

W 3 mph
Precip: 0%

2:00am

Clear

40°F
Dew Pt 29°F
Wind Chill: 38°F
Wind from W

W 3 mph
Precip: 0%

3:00am

Clear

38°F
Dew Pt 29°F
Wind from W

W 2 mph
Precip: 0%

4:00am

Areas Of Frost

36°F
Dew Pt 29°F
Wind from W

W 2 mph
Precip: 0%

5:00am

Areas Of Frost

35°F
Dew Pt 29°F
Wind from W

W 1 mph
Precip: 0%

6:00am

Areas Of Frost

34°F
Dew Pt 29°F
Wind from W

W 1 mph
Precip: 0%

7:00am

Areas Of Frost

34°F
Dew Pt 29°F
Wind from SW

SW 1 mph
Precip: 0%

8:00am

Sunny

37°F
Dew Pt 30°F
Wind from SW

SW 1 mph
Precip: 0%

9:00am

Sunny

42°F
Dew Pt 32°F
Wind Chill: 40°F
Wind from SW

SW 3 mph
Precip: 0%

10:00am

Sunny

49°F
Dew Pt 33°F
Wind Chill: 47°F
Wind from SW

SW 6 mph
Precip: 0%

11:00am

Sunny

55°F
Dew Pt 35°F
Wind from SW

SW 8 mph
Precip: 0%

12:00pm

Sunny

60°F
Dew Pt 35°F
Wind from SW

SW 9 mph
Precip: 0%

1:00pm

Sunny

62°F
Dew Pt 36°F
Wind from SW

SW 12 mph
Precip: 0%

2:00pm

Sunny

64°F
Dew Pt 36°F
Wind from SW

SW 13 mph
Precip: 0%

3:00pm

Sunny

64°F
Dew Pt 37°F
Wind from SW

SW 13 mph
Precip: 0%

4:00pm

Sunny

64°F
Dew Pt 38°F
Wind from S

S 13 mph
Precip: 0%

5:00pm

Sunny

63°F
Dew Pt 40°F
Wind from S

S 13 mph
Precip: 0%

6:00pm

Mostly Clear

61°F
Dew Pt 41°F
Wind from S

S 12 mph
Precip: 0%

7:00pm

Mostly Clear

58°F
Dew Pt 43°F
Wind from S

S 12 mph
Precip: 0%

8:00pm

Mostly Clear

56°F
Dew Pt 45°F
Wind from S

S 10 mph
Precip: 0%

9:00pm

Mostly Clear

55°F
Dew Pt 46°F
Wind from SW

SW 10 mph
Precip: 0%

10:00pm

Partly Cloudy

54°F
Dew Pt 47°F
Wind from SW

SW 9 mph
Precip: 0%

11:00pm

Partly Cloudy

54°F
Dew Pt 48°F
Wind from SW

SW 9 mph
Precip: 3%

Thu
12:00am

Partly Cloudy

54°F
Dew Pt 49°F
Wind from SW

SW 9 mph
Precip: 0%

Thu
1:00am

Partly Cloudy

54°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 0%

Thu
2:00am

Mostly Cloudy

54°F
Dew Pt 50°F
Wind from SW

SW 8 mph
Precip: 0%

Thu
3:00am

Partly Cloudy

54°F
Dew Pt 50°F
Wind from SW

SW 8 mph
Precip: 0%

Thu
4:00am

Partly Cloudy

53°F
Dew Pt 50°F
Wind from SW

SW 8 mph
Precip: 0%

Thu
5:00am

Partly Cloudy

53°F
Dew Pt 51°F
Wind from SW

SW 8 mph
Precip: 0%

Thu
6:00am

Mostly Sunny

53°F
Dew Pt 51°F
Wind from SW

SW 8 mph
Precip: 0%

Thu
7:00am

Sunny

53°F
Dew Pt 52°F
Wind from SW

SW 9 mph
Precip: 1%

Thu
8:00am

Sunny

55°F
Dew Pt 53°F
Wind from SW

SW 9 mph
Precip: 6%

Thu
9:00am

Sunny

58°F
Dew Pt 54°F
Wind from SW

SW 8 mph
Precip: 11%

Thu
10:00am

Slight Chance Rain Showers

62°F
Dew Pt 55°F
Wind from SW

SW 9 mph
Precip: 16%

Thu
11:00am

Slight Chance Rain Showers

66°F
Dew Pt 56°F
Wind from SW

SW 9 mph
Precip: 20%

Thu
12:00pm

Slight Chance Rain Showers

69°F
Dew Pt 56°F
Wind from SW

SW 10 mph
Precip: 20%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 062349
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
749 PM EDT Tue Oct 6 2026

.WHAT HAS CHANGED...
No significant changes to the forecast.

&&

.KEY MESSAGES...

- Dry & chilly tonight with widespread frost outside the urban 
  centers. Sunny & becoming breezy Wed with milder high temps
  reaching well into the 60s. Much milder Wed night with S-SW
  winds holding low temps mainly in the upper 40s-lower 50s. 

- Very low chance of a spot shower Thursday, otherwise a mild day.
  An early look at the holiday weekend favors dry weather, 
  though late Sunday into Monday bears watching for rain.

&&

.DISCUSSION...
KEY MESSAGE 1...Dry & chilly tonight with widespread frost outside 
the urban centers. Sunny & becoming breezy Wed with milder high 
temps  reaching well into the 60s. Much milder Wed night with S-SW 
winds holding low temps mainly in the upper 40s-lower 50s. 

Large high pressure builds overhead tonight. This coupled with the 
dry/cool airmass and mainly clear skies will result in good 
radiational cooling and unseasonably chilly temps tonight. Low 
temperatures should bottom out well down into the 30s in many 
locations with even some upper 20s in the normally coolest low-lying 
areas of western MA. Frost and even freeze headlines are in effect 
for much of the region outside the urban heat islands. The mild spot 
will be downtown Boston...where low temps will only drop into the 
middle 40s.

This high pressure system moves east of the region on Wed. This 
results in a return southwest flow of milder air to work back into 
the region. Sunny skies and 925T warming to around +10C by afternoon 
will allow for a very nice recovery in temps. Highs should reach the 
lower 60s in the high terrain with middle to upper 60s in most other 
locations. It will become a bit breezy Wed afternoon with Bufkit 
soundings supporting SW wind gusts of 20-25 mph...but still a very 
nice day. 

A modest southwest LLJ of 30-40 knots ahead of an approaching cold 
front Wed night will prevent surface winds from decoupling. This 
will result in a much milder low temperatures that what is on tap 
for tonight. Low temps will only drop into the upper 40s and lower 
50s in most locations.

KEY MESSAGE 2...Very low chance of a spot shower Thursday, otherwise 
a mild day. An early look at the holiday weekend favors dry weather, 
though late Sunday into Monday bears watching for rain.

There aren't many changes to the extended forecast. As previously 
mentioned, a vertically stacked low near Hudson Bay will send a few 
subtle shortwaves through New England Thursday. Limited moisture 
should preclude significant rainfall, though a spot shower cannot be 
ruled out. The NBM doesn't show this particularly well, but CAMs do 
indicate low-end PoPs during the day Thursday associated with a 
surface cold front. Southwest flow aloft also brings somewhat 
elevated PWATs into the region. Thus, felt it best to introduce 
Slight Chance (15-20%) PoPs. This is far from a washout, with much 
of the region and day remaining dry, though the setup does favor a 
few spot showers. Otherwise, dry weather prevails Friday through the 
start of the holiday weekend.

Forecast uncertainty increases late Sunday into Columbus Day and 
will depend largely on potential tropical development over the Bay 
of Campeche. Development of AL92 is expected, and if named would 
become Isaias. Some guidance brings remnant tropical moisture north 
into southern New England sometime late Sunday night or Monday, 
while other solutions keep it suppressed to our south as a strong 
1030 mb high extends across much of southern Canada. Plenty of time 
to watch trends, with no reason to alter outdoor plans at this point.

Temperatures remain fall-like with highs mainly in the middle to 
upper 60s, except upper 60s to mid 70s Thursday. Overnight lows are 
mostly in the upper 40s and 50s, though cooler upper 30s to middle 
40s are possible Friday night into Saturday morning. Even cooler 
conditions are possible where effective radiational cooling develops 
beneath the surface high.

&&

.AVIATION /00Z WEDNESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...

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

00z TAF Update...High confidence.

VFR conditions continue through Wednesday night. WNW winds diminish 
tonight and become Light W or completely decouple. Winds then shift 
to the SW Wed into Wed night with some 20-25 knot gusts expected Wed 
afternoon. 

KBOS Terminal...High confidence in TAF 

KBDL Terminal...High confidence in TAF.

Outlook /Thursday through Sunday/...

Thursday: VFR. Breezy. Slight chance SHRA.

Thursday Night: VFR. 

Friday: VFR. Breezy. 

Friday Night through Saturday Night: VFR. 

Sunday: VFR. Breezy.

&&

.MARINE...
Forecaster Confidence Levels...

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

Tonight through Thursday night...High confidence.

Lingering WNW small craft wind gusts quickly diminish by early 
evening as high pressure builds in from the west. Winds then shift 
to the SW Wed into Wed night. Some SW wind gusts of 20-25 knots 
expected Wed afternoon and night. Later shifts may need to consider 
some small craft advisory headlines Wed PM...but felt it was too 
marginal for a late 2nd/3rd period event. 

Outlook /Thursday through Sunday/...

Thursday through Thursday Night: Winds less than 25 kt. Areas
of seas approaching 5 ft. 

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

Friday Night through Saturday Night: Winds less than 25 kt. 

Sunday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Frost Advisory from 11 PM this evening to 9 AM EDT Wednesday 
     for CTZ002>004.
MA...Frost Advisory from 11 PM this evening to 9 AM EDT Wednesday 
     for MAZ004>006-009-011>013-017-018-020-021-026.
     Freeze Warning from 11 PM this evening to 9 AM EDT Wednesday 
     for MAZ002-003-008-010.
RI...Frost Advisory from 11 PM this evening to 9 AM EDT Wednesday 
     for RIZ001-003-006.
MARINE...None.

&&

$$

DISCUSSION...Frank/Dooley
AVIATION...Frank/Dooley
MARINE...Frank/Dooley

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Precipitation [‒] Precipitation [+]

Note: Rain measured automatically by weather station. Rain totals do not necessarily include melted frozen precipitation.

For more accurate, manually measured rain data, see the Local Precip Data page.

0.00 in

Rain Rate (/hr):

0.00 in

Rain Last 60 min:

0.00 in

Rain Today:

0.00 in

Tuesday:

0.06 in

October:

24.40 in

2026

Daily Extremes [‒] Daily Extremes [+]

12:00am

45.9°F

High today:

1:16am

45.3°F

Low today:

2:55pm

61.0°F

High Tuesday:

6:55am

44.1°F

Low Tuesday:

1:16am

45.3°F

Low wind chill today:

8:16am

40.8°F

Low wind chill Tuesday:

12:42am

36.7°F

High dew pt today:

12:45am

40.1°F

High dew pt Tuesday:

12:06am

1 mph

Wind gust today:

11:48am

16 mph

Wind gust Tuesday:

MORE EXTREMES

Alerts / Advisories [‒] Alerts / Advisories [+]

No alerts/warnings active for Southeast Middlesex County.

Sun / Moon [‒] Sun / Moon [+]

First Light:

6:21am

Sunrise:

6:49am

Sunset:

6:16pm

Twilight ends:

6:44pm

Daylight length:

11 hours 27 minutes

Waning Crescent, Moon age: 26 days, 1 hours, 59 minutes, 13%

Phase:

Waning Crescent (13%)

Moon rise:

3:20am

Moon set:

4:48pm

Lexington Weather

Current Conditions [‒] Current Conditions [+]

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Forecast [‒] Forecast [+]

NWS Weather Forecast -
Tonight, Wednesday, & Wednesday Night through Tuesday

Overview:

Tonight:

Wednesday:

Wednesday Night:

Thursday:

Thursday Night:

Friday:

Friday Night:

Saturday:

Saturday Night:

Sunday:

Sunday Night:

Columbus Day:

Monday Night:

Tuesday:

FULL FORECAST

NWS Hourly Forecast -
Today 1am through Thu 12pm

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

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NWS Weather Forecast - Tonight, Wednesday, & Wednesday Night through Tuesday

Overview:

Tonight:

Wednesday:

Wednesday Night:

Thursday:

Thursday Night:

Friday:

Friday Night:

Saturday:

Saturday Night:

Sunday:

Sunday Night:

Columbus Day:

Monday Night:

Tuesday:

NWS Hourly Forecast - Today 1am through Thu 12pm

Area Forecast Discussion for Boston / Norton, MA

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NWS Weather Forecast -
Tonight, Wednesday, & Wednesday Night through Tuesday

NWS Hourly Forecast -
Today 1am through Thu 12pm

Area Forecast Discussion
for Boston / Norton, MA