Lexington Weather

Current Conditions [‒] Current Conditions [+]

63.3°F Colder than last hour.

17.4°C

Comfortable

Clear

This Afternoon: Hi 66 °F

Tonight: Lo 52 °F

Dew Point: 42.3°F Increased 3.8°F since last hour .

Humidity: 46% Increased 8.0% since last hour.

Air Quality Index: 29

Good

(Ozone)

Barometer: 29.83 in S

1010 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: 9 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
This Afternoon, Tonight, & Thursday through Tuesday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Wed Oct 7, 2026 2:50pm EDT

Overview:

- Temps continue to moderate Thu with highs reaching into the lower-middle 70s in many locations. Mainly dry weather continues with a few brief spot showers possible with a cold front.

- Dry weather prevails Friday through early Sunday, with another frosty start possible Saturday. Rain is increasingly likely late Sunday into Columbus Day, though uncertainty remains with onset timing and rainfall amounts.

This Afternoon:

Sunny

Hi 66 °F

Sunny, with a high near 66. South wind around 13 mph, with gusts as high as 23 mph.

Tonight:

Mostly Clear

Lo 52 °F

Mostly clear, with a low around 52. Southwest wind 8 to 12 mph, with gusts as high as 22 mph.

Thursday:

Chance Rain Showers

Hi 73 °F

A chance of rain showers between 9am and 1pm. Mostly sunny, with a high near 73. Southwest wind 8 to 12 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Thursday Night:

Clear

Lo 44 °F

Clear, with a low around 44. West wind 3 to 10 mph.

Friday:

Sunny

Hi 65 °F

Sunny, with a high near 65. West wind 2 to 9 mph, with gusts as high as 24 mph.

Friday Night:

Clear

Lo 40 °F

Clear, with a low around 40. West wind 1 to 6 mph.

Saturday:

Patchy Frost then Sunny

Hi 68 °F

Patchy frost before 8am. Sunny, with a high near 68. West wind around 3 mph.

Saturday Night:

Mostly Clear

Lo 50 °F

Mostly clear, with a low around 50. Southwest wind 1 to 5 mph.

Sunday:

Partly Sunny then Rain Showers Likely

Hi 70 °F

Rain showers likely after noon. Partly sunny, with a high near 70. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

Sunday Night:

Rain Showers

Lo 58 °F

Rain showers. Mostly cloudy, with a low around 58. Southwest wind 6 to 9 mph. Chance of precipitation is 80%.

Columbus Day:

Rain Showers Likely

Hi 70 °F

Rain showers likely before 3pm. Mostly cloudy, with a high near 70. West wind around 8 mph. Chance of precipitation is 60%.

Monday Night:

Slight Chance Rain Showers

Lo 53 °F

A slight chance of rain showers between 9pm and 2am. Mostly cloudy, with a low around 53. North wind 5 to 8 mph.

Tuesday:

Chance Rain Showers

Hi 63 °F

A chance of rain showers after 7am. Partly sunny, with a high near 63. Northwest wind 8 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

Tuesday Night:

Chance Rain Showers

Lo 43 °F

A chance of rain showers. Mostly cloudy, with a low around 43. Northwest wind around 12 mph, with gusts as high as 22 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 5pm through Fri 4am

Issued by:
National Weather Service Boston / Norton, MA
Updated Wed Oct 7, 2026 2:50pm EDT

5:00pm

Sunny

65°F
Dew Pt 38°F
Wind from S

S 13 mph
Precip: 0%

6:00pm

Clear

63°F
Dew Pt 39°F
Wind from S

S 12 mph
Precip: 0%

7:00pm

Clear

60°F
Dew Pt 41°F
Wind from S

S 10 mph
Precip: 0%

8:00pm

Clear

57°F
Dew Pt 42°F
Wind from S

S 8 mph
Precip: 0%

9:00pm

Clear

55°F
Dew Pt 44°F
Wind from S

S 8 mph
Precip: 0%

10:00pm

Mostly Clear

53°F
Dew Pt 45°F
Wind from S

S 8 mph
Precip: 0%

11:00pm

Mostly Clear

52°F
Dew Pt 46°F
Wind from SW

SW 8 mph
Precip: 0%

Thu
12:00am

Mostly Clear

52°F
Dew Pt 47°F
Wind from SW

SW 8 mph
Precip: 1%

Thu
1:00am

Mostly Clear

52°F
Dew Pt 47°F
Wind from SW

SW 8 mph
Precip: 1%

Thu
2:00am

Mostly Clear

52°F
Dew Pt 48°F
Wind from SW

SW 8 mph
Precip: 2%

Thu
3:00am

Mostly Clear

53°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 1%

Thu
4:00am

Mostly Clear

53°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 1%

Thu
5:00am

Partly Cloudy

53°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 0%

Thu
6:00am

Mostly Sunny

54°F
Dew Pt 50°F
Wind from SW

SW 8 mph
Precip: 7%

Thu
7:00am

Partly Sunny

54°F
Dew Pt 51°F
Wind from SW

SW 8 mph
Precip: 11%

Thu
8:00am

Partly Sunny

56°F
Dew Pt 52°F
Wind from SW

SW 8 mph
Precip: 14%

Thu
9:00am

Chance Rain Showers

58°F
Dew Pt 53°F
Wind from SW

SW 9 mph
Precip: 29%
Rain: 0.03 in

Thu
10:00am

Chance Rain Showers

62°F
Dew Pt 54°F
Wind from SW

SW 10 mph
Precip: 30%
Rain: 0.03 in

Thu
11:00am

Partly Sunny

65°F
Dew Pt 55°F
Wind from SW

SW 12 mph
Precip: 13%

Thu
12:00pm

Slight Chance Rain Showers

68°F
Dew Pt 53°F
Wind from SW

SW 12 mph
Precip: 17%
Rain: 0.01 in

Thu
1:00pm

Partly Sunny

70°F
Dew Pt 50°F
Wind from W

W 12 mph
Precip: 13%

Thu
2:00pm

Mostly Sunny

71°F
Dew Pt 48°F
Wind from W

W 12 mph
Precip: 9%

Thu
3:00pm

Mostly Sunny

71°F
Dew Pt 47°F
Wind from W

W 12 mph
Precip: 8%

Thu
4:00pm

Mostly Sunny

70°F
Dew Pt 46°F
Wind from W

W 12 mph
Precip: 8%

Thu
5:00pm

Sunny

68°F
Dew Pt 45°F
Wind from W

W 12 mph
Precip: 7%

Thu
6:00pm

Mostly Clear

65°F
Dew Pt 44°F
Wind from W

W 10 mph
Precip: 5%

Thu
7:00pm

Mostly Clear

61°F
Dew Pt 44°F
Wind from W

W 8 mph
Precip: 2%

Thu
8:00pm

Clear

56°F
Dew Pt 43°F
Wind from W

W 6 mph
Precip: 0%

Thu
9:00pm

Clear

54°F
Dew Pt 44°F
Wind from W

W 6 mph
Precip: 0%

Thu
10:00pm

Clear

53°F
Dew Pt 44°F
Wind from W

W 6 mph
Precip: 0%

Thu
11:00pm

Clear

52°F
Dew Pt 43°F
Wind from W

W 6 mph
Precip: 0%

Fri
12:00am

Clear

51°F
Dew Pt 43°F
Wind from W

W 6 mph
Precip: 0%

Fri
1:00am

Clear

49°F
Dew Pt 43°F
Wind Chill: 47°F
Wind from W

W 5 mph
Precip: 0%

Fri
2:00am

Clear

48°F
Dew Pt 42°F
Wind Chill: 46°F
Wind from W

W 5 mph
Precip: 0%

Fri
3:00am

Clear

47°F
Dew Pt 42°F
Wind Chill: 45°F
Wind from W

W 5 mph
Precip: 0%

Fri
4:00am

Clear

46°F
Dew Pt 42°F
Wind Chill: 45°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 071848
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
248 PM EDT Wed Oct 7 2026

.WHAT HAS CHANGED...

Small craft advisories have been issued for many of our coastal 
waters tonight into Thursday. 

&&

.KEY MESSAGES...

- Temps continue to moderate Thu with highs reaching into the 
  lower-middle 70s in many locations. Mainly dry weather continues 
  with a few brief spot showers possible with a cold front.  

- Dry weather prevails Friday through early Sunday, with another
  frosty start possible Saturday. Rain is increasingly likely
  late Sunday into Columbus Day, though uncertainty remains with
  onset timing and rainfall amounts.

&&

.DISCUSSION...

KEY MESSAGE 1...Temps continue to moderate Thu with highs reaching 
into the lower-middle 70s in many locations. Mainly dry weather 
continues with a few brief spot showers possible with a cold front. 

High pressure will continue to shift east of the region tonight as a 
cold front approaches from the west on Thursday. A modest southwest 
LLJ ahead of this cold front should keep most locations from 
decoupling tonight. This will result in a much milder night than 
what we saw last night. Overnight low temps should only drop into 
the middle 40s to the lower 50s in most locations with middle 50s in 
the Urban Heat Island of Boston. 

A moisture starved cold front and associated pre-frontal trough will 
be approaching the area from the west near daybreak Thu. This will 
result in a period of mid-level cloudiness and a few brief passing 
showers possible...mainly Thu morning. However...any showers will be 
very short-lived in a given location and pretty much looking at a 
dry day. Otherwise...partial sunshine with 925T around +14C should 
result in high temps mainly in the lower to middle 70s in many 
locations. There is a low risk for a few additional spot showers 
ahead of the cold front too...but again the majority of the day is 
dry. A bit of a breeze out of the west southwest too...but overall a 
very nice day. 

Winds diminish Thu night with skies becoming clear. This will allow 
for a good night of radiational cooling with low temps mainly in the 
40s...but some upper 30s possible in the normally coolest outlying 
locations. 

KEY MESSAGE 2...Dry weather prevails Friday through early Sunday, 
with another frosty start possible Saturday. Rain is increasingly 
likely late Sunday into Columbus Day, though uncertainty remains 
with onset timing and rainfall amounts.

The extended forecast remains on track with no major shifts. Strong 
1030+ mb high pressure builds over the Northeast Friday and 
Saturday, supporting sunny and dry conditions. Highs Friday are 
seasonably cool in the post-frontal airmass, mainly in the lower to 
middle 60s. WAA develops aloft Saturday as 925 mb temperatures 
increase from around +8C Friday to +9C to +12C Saturday, supporting 
highs in the middle 60s to lower 70s. Another frosty start is 
possible Saturday, especially in the typically colder locations 
where light/calm winds favor effective radiational cooling. The NBM 
doesn't capture this particularly well, so blended in MOS guidance, 
resulting in lows in the mid 30s across the colder locations while 
the urban core remains in the mid to upper 40s.

Confidence is high in dry weather Friday through early Sunday given 
strong ensemble agreement on high pressure dominating the Northeast. 
Confidence decreases thereafter with respect to timing and rainfall 
amounts, though it is looking increasingly likely that rain arrives 
sometime late Sunday and continues into Columbus Day. High pressure 
shifts east Sunday as remnant moisture from Isaias begins to 
approach southern New England. Isaias, currently over the southwest 
Gulf, is expected to make landfall Friday night on the Gulf Coast. 
Guidance still shows a fairly wide window for the onset of rain, 
ranging from late Sunday morning to after sunset, but confidence is 
moderate to high that rain occurs Sunday night into Monday.

There are signals that this could be a soaking rain, though 
confidence in amounts remains lower. PWATs increase to 2-3 standard 
deviations above climatology, while DESI probabilities for 0.50+ 
inches of rain from 8 PM Sunday to 8 PM Monday range from around 45 
percent across northern Massachusetts to 60-70 percent along coastal 
Rhode Island and Massachusetts. Probabilities for 2+ inches remain 
low, around 10-15 percent and mainly confined to Block Island, 
Martha's Vineyard and Nantucket.

Forecast confidence becomes quite low by Tuesday, though the pattern 
favors continued unsettled weather as a cold front potentially 
approaches from the west. Otherwise, no significant changes to 
temperatures, with highs generally in the 60s to around 70 Sunday 
through Tuesday and overnight lows in the upper 40s and 50s.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...

Forecaster Confidence Levels...

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

18z TAF Update...High confidence.

VFR conditions continue through Thu night. S winds of 5-15 knots 
tonight with some 20+ knot gusts at times. A few brief passing 
showers possible mainly Thu morning...but this would be short-lived. 
WSW wind gusts of 15 to 25 knots expected Thu...but these should 
diminish and become W by Thu night. 

KBOS Terminal...High confidence in TAF.

KBDL Terminal...High confidence in TAF.

Outlook /Friday through Monday/...

Friday: VFR. Breezy. 

Friday Night through Saturday Night: VFR. 

Sunday: Mainly VFR, with areas MVFR possible. Breezy. Chance
SHRA.

Sunday Night: Mainly MVFR, with areas VFR possible. Breezy.
SHRA.

Columbus Day: Mainly VFR, with local IFR possible. Breezy.
Chance SHRA.

&&

.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.

A SW low level jet ahead of an approaching cold front will result in 
SW wind gusts of 20-25 knots developing tonight and persisting into 
Thu afternoon. Small craft advisories have been posted for most of 
our waters. Wind gusts should drop below small craft thresholds 
later Thu and especially Thu night. 

Outlook /Friday through Monday/...

Friday through Saturday Night: Winds less than 25 kt. 

Sunday: Winds less than 25 kt. Chance of rain showers. 

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

Columbus Day: Winds less than 25 kt. Areas of rough seas.
Chance of rain showers, slight chance of thunderstorms. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 9 PM this evening to 3 PM EDT 
     Thursday for ANZ231>235-237-254>256.
     Small Craft Advisory from 6 PM this evening to 11 AM EDT 
     Thursday for ANZ250-251.

&&

$$

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

CLOSE

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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 [+]

2:52pm

66.2°F

High today:

7:19am

39.7°F

Low today:

2:55pm

61.0°F

High Tuesday:

6:55am

44.1°F

Low Tuesday:

7:19am

39.7°F

Low wind chill today:

8:16am

40.8°F

Low wind chill Tuesday:

5:27pm

42.3°F

High dew pt today:

12:45am

40.1°F

High dew pt Tuesday:

5:20pm

9 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, 18 hours, 1 minutes, 9%

Phase:

Waning Crescent (9%)

Moon rise:

3:20am

Moon set:

4:48pm

Lexington Weather

Current Conditions [‒] Current Conditions [+]

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REGIONAL CONDITIONS

Forecast [‒] Forecast [+]

NWS Weather Forecast -
This Afternoon, Tonight, & Thursday through Tuesday Night

Overview:

This Afternoon:

Tonight:

Thursday:

Thursday Night:

Friday:

Friday Night:

Saturday:

Saturday Night:

Sunday:

Sunday Night:

Columbus Day:

Monday Night:

Tuesday:

Tuesday Night:

FULL FORECAST

NWS Hourly Forecast -
Today 5pm through Fri 4am

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

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NWS Weather Forecast - This Afternoon, Tonight, & Thursday through Tuesday Night

Overview:

This Afternoon:

Tonight:

Thursday:

Thursday Night:

Friday:

Friday Night:

Saturday:

Saturday Night:

Sunday:

Sunday Night:

Columbus Day:

Monday Night:

Tuesday:

Tuesday Night:

NWS Hourly Forecast - Today 5pm through Fri 4am

Area Forecast Discussion for Boston / Norton, MA

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NWS Weather Forecast -
This Afternoon, Tonight, & Thursday through Tuesday Night

NWS Hourly Forecast -
Today 5pm through Fri 4am

Area Forecast Discussion
for Boston / Norton, MA