Lexington Weather

Current Conditions [‒] Current Conditions [+]

45.9°F

7.7°C

Chilly

Overcast

Overnight: Lo 41 °F

Wednesday: Hi 60 °F

Dew Point: 41.0°F Increased 1.3°F since last hour .

Humidity: 83% Increased 4.0% since last hour.

Air Quality Index: 37

Good

(Fine Particles)

Barometer: 30.01 in Rising 0.02 inHg/hr

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 -
Overnight, Wednesday, & Wednesday Night through Tuesday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Wed Apr 29, 2026 2:28am EDT

Overview:

- Increasing clouds today with beneficial rainfall moving in tonight and Thursday.

- Unsettled and cooler this weekend into early next week.

Overnight:

Mostly Cloudy

Lo 41 °F

Mostly cloudy, with a low around 41. North wind around 5 mph.

Wednesday:

Partly Sunny

Hi 60 °F

Partly sunny, with a high near 60. Northeast wind around 7 mph.

Wednesday Night:

Showers And T-Storms

Lo 47 °F

Wednesday Night: Showers And Thunderstorms

A chance of rain showers between 10pm and 2am, then showers and thunderstorms. Cloudy, with a low around 47. East wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

Thursday:

Rain Showers

Hi 57 °F

Rain showers. Cloudy, with a high near 57. Southeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night:

Chance Rain Showers then Mostly Cloudy

Lo 42 °F

A chance of rain showers before midnight. Mostly cloudy, with a low around 42. West wind around 8 mph. Chance of precipitation is 50%.

Friday:

Mostly Sunny

Hi 58 °F

Mostly sunny, with a high near 58. West wind 8 to 12 mph.

Friday Night:

Mostly Clear

Lo 38 °F

Mostly clear, with a low around 38. West wind 6 to 9 mph.

Saturday:

Mostly Sunny

Hi 58 °F

Mostly sunny, with a high near 58. West wind 6 to 9 mph.

Saturday Night:

Mostly Cloudy

Lo 39 °F

Mostly cloudy, with a low around 39. West wind 3 to 7 mph.

Sunday:

Mostly Sunny

Hi 57 °F

Mostly sunny, with a high near 57. West wind 5 to 10 mph.

Sunday Night:

Partly Cloudy

Lo 40 °F

Partly cloudy, with a low around 40. West wind 6 to 9 mph.

Monday:

Mostly Sunny

Hi 62 °F

Mostly sunny, with a high near 62. Southwest wind 6 to 12 mph, with gusts as high as 22 mph.

Monday Night:

Slight Chance Rain Showers

Lo 44 °F

A slight chance of rain showers after 7pm. Mostly cloudy, with a low around 44. Southwest wind 6 to 9 mph.

Tuesday:

Chance Rain Showers

Hi 66 °F

A chance of rain showers. Partly sunny, with a high near 66. Southwest wind 6 to 12 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 6am through Thu 5pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Wed Apr 29, 2026 2:28am EDT

6:00am

Mostly Cloudy

43°F
Dew Pt 38°F
Wind Chill: 40°F
Wind from N

N 5 mph
Precip: 0%

7:00am

Mostly Cloudy

44°F
Dew Pt 39°F
Wind Chill: 41°F
Wind from N

N 5 mph
Precip: 1%

8:00am

Mostly Cloudy

45°F
Dew Pt 41°F
Wind Chill: 42°F
Wind from N

N 6 mph
Precip: 1%

9:00am

Mostly Cloudy

48°F
Dew Pt 41°F
Wind Chill: 45°F
Wind from N

N 6 mph
Precip: 2%

10:00am

Partly Sunny

50°F
Dew Pt 42°F
Wind Chill: 48°F
Wind from NE

NE 6 mph
Precip: 5%

11:00am

Partly Sunny

52°F
Dew Pt 42°F
Wind from NE

NE 6 mph
Precip: 3%

12:00pm

Mostly Sunny

56°F
Dew Pt 42°F
Wind from NE

NE 7 mph
Precip: 1%

1:00pm

Mostly Sunny

57°F
Dew Pt 43°F
Wind from NE

NE 7 mph
Precip: 0%

2:00pm

Partly Sunny

58°F
Dew Pt 43°F
Wind from E

E 7 mph
Precip: 3%

3:00pm

Partly Sunny

58°F
Dew Pt 44°F
Wind from E

E 7 mph
Precip: 10%

4:00pm

Partly Sunny

58°F
Dew Pt 43°F
Wind from E

E 7 mph
Precip: 12%

5:00pm

Partly Sunny

58°F
Dew Pt 43°F
Wind from E

E 7 mph
Precip: 10%

6:00pm

Mostly Cloudy

55°F
Dew Pt 44°F
Wind from E

E 7 mph
Precip: 14%

7:00pm

Mostly Cloudy

54°F
Dew Pt 43°F
Wind from E

E 6 mph
Precip: 13%

8:00pm

Mostly Cloudy

52°F
Dew Pt 43°F
Wind from E

E 6 mph
Precip: 9%

9:00pm

Cloudy

49°F
Dew Pt 44°F
Wind Chill: 47°F
Wind from E

E 6 mph
Precip: 12%

10:00pm

Slight Chance Rain Showers

48°F
Dew Pt 44°F
Wind Chill: 45°F
Wind from E

E 6 mph
Precip: 16%

11:00pm

Chance Rain Showers

48°F
Dew Pt 45°F
Wind Chill: 46°F
Wind from E

E 5 mph
Precip: 27%

Thu
12:00am

Chance Rain Showers

48°F
Dew Pt 45°F
Wind Chill: 46°F
Wind from E

E 5 mph
Precip: 36%
Rain: 0.01 in

Thu
1:00am

Chance Rain Showers

48°F
Dew Pt 46°F
Wind Chill: 46°F
Wind from E

E 5 mph
Precip: 47%
Rain: 0.02 in

Thu
2:00am

Showers And Thunderstorms Likely

48°F
Dew Pt 46°F
Wind Chill: 46°F
Wind from E

E 5 mph
Precip: 57%
Rain: 0.02 in

Thu
3:00am

Showers And Thunderstorms Likely

47°F
Dew Pt 46°F
Wind Chill: 45°F
Wind from E

E 5 mph
Precip: 66%
Rain: 0.02 in

Thu
4:00am

Showers And Thunderstorms

48°F
Dew Pt 47°F
Wind Chill: 46°F
Wind from E

E 5 mph
Precip: 79%
Rain: 0.02 in

Thu
5:00am

Rain Showers

49°F
Dew Pt 47°F
Wind Chill: 47°F
Wind from E

E 5 mph
Precip: 79%
Rain: 0.02 in

Thu
6:00am

Rain Showers

48°F
Dew Pt 47°F
Wind Chill: 46°F
Wind from E

E 5 mph
Precip: 81%
Rain: 0.02 in

Thu
7:00am

Rain Showers

49°F
Dew Pt 48°F
Wind Chill: 47°F
Wind from SE

SE 5 mph
Precip: 83%
Rain: 0.03 in

Thu
8:00am

Rain Showers

50°F
Dew Pt 49°F
Wind Chill: 48°F
Wind from SE

SE 5 mph
Precip: 89%
Rain: 0.04 in

Thu
9:00am

Rain Showers

50°F
Dew Pt 49°F
Wind Chill: 48°F
Wind from SE

SE 5 mph
Precip: 89%
Rain: 0.04 in

Thu
10:00am

Rain Showers

51°F
Dew Pt 49°F
Wind from SE

SE 5 mph
Precip: 89%
Rain: 0.04 in

Thu
11:00am

Rain Showers

53°F
Dew Pt 49°F
Wind from SE

SE 5 mph
Precip: 89%
Rain: 0.04 in

Thu
12:00pm

Rain Showers

54°F
Dew Pt 49°F
Wind from S

S 5 mph
Precip: 84%
Rain: 0.04 in

Thu
1:00pm

Rain Showers

54°F
Dew Pt 49°F
Wind from SW

SW 6 mph
Precip: 79%
Rain: 0.03 in

Thu
2:00pm

Rain Showers Likely

55°F
Dew Pt 49°F
Wind from W

W 6 mph
Precip: 74%
Rain: 0.04 in

Thu
3:00pm

Rain Showers Likely

55°F
Dew Pt 49°F
Wind from W

W 6 mph
Precip: 69%
Rain: 0.04 in

Thu
4:00pm

Rain Showers Likely

56°F
Dew Pt 48°F
Wind from W

W 7 mph
Precip: 63%
Rain: 0.03 in

Thu
5:00pm

Rain Showers Likely

55°F
Dew Pt 48°F
Wind from W

W 7 mph
Precip: 58%
Rain: 0.03 in

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 290622
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
222 AM EDT Wed Apr 29 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...


- Increasing clouds today with beneficial rainfall moving in tonight 
  and Thursday.

- Unsettled and cooler this weekend into early next week. 

&&

.DISCUSSION...

KEY MESSAGE 1...Increasing clouds today with beneficial rainfall 
moving in tonight and Thursday.

Should be a mostly dry start to the day outside coastal areas of 
Massachusetts where drizzle and patchy fog will likely be ongoing. 
Otherwise, expect a lull in the activity by the late morning and 
early afternoon. Areas of rain and scattered showers increase in 
coverage later this afternoon and evening. Initially, there will be 
two areas of precipitation, showers associated with the inverted 
trough near the coast, and a more widespread shield of rain 
associated with incoming low pressure. The bulk of the rain falls 
overnight into Thursday morning with passage of upper trough from 
Ohio Valley and secondary surface low that tracks from mid Atlantic 
to Cape Cod. Still looks like a fairly quick hitting event, with the 
bulk of the rain wrapping up from west to east through the morning. 
Any lingering areas of showers and drizzle across the Cape and 
Islands come to an end around sunset. Could also see a few rumbles 
of thunder embedded within any heavier elements Thursday morning. 

Overall, this will be a quick hitting and weak system with meager 
dynamics aloft. Rainfall totals should be more beneficial with most 
areas areas picking up 0.25 to 1.00" of much needed rainfall, 
perhaps a little more in northern MA. 

Astro tides are fairly low so coastal flooding is not much of a 
concern along E MA coast. Persistent onshore flow may bring a surge 
of up to 1 foot later in week, but by then winds turn offshore as 
surface low lifts farther to the north.


KEY MESSAGE 2...Unsettled and cooler this weekend into early next 
week. 

Amplified pattern later this week and over the weekend as a building 
ridge of high pressure over central Canada traps a upper level low 
over southern Ontario. Southern New England should be far enough 
removed from coldest air aloft to keep us mostly dry, especially 
given W/NW flow, but pattern certainly favors diurnal clouds and 
perhaps a few afternoon sprinkles Friday, Saturday, and Sunday. 

It does look like upper low may lift farther north early next week, 
allowing for more of a zonal flow across northern tier of states 
which would lead to drier and milder weather Monday and Tuesday. 
However, models are notorious for breaking down these blocky 
patterns too quickly, such that it may take a little longer to see 
improving conditions. For now, forecast reflects model blend to iron 
out the uncertainty.

&&

.AVIATION /06Z WEDNESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...

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

06z TAF Update:

For today, slow improvement at best. Ceilings may briefly lift 
to MVFR near the coast late morning to early afternoon, but IFR 
likely redevelops by mid to late afternoon with a chance of 
- SHRA/-DZ. VFR continues across the western terminals. 

By tonight, MVFR/IFR conditions become more widespread as 
showers overspread the region, continuing into Thursday. 

KBOS Terminal...Moderate confidence in TAF timing. Very slow
improvement to MVFR late in the afternoon. There is the
potential for IFR ceilings to persist all day.

KBDL Terminal...High confidence in TAF.

Outlook /Thursday Night through Sunday/...

Thursday Night: Mainly VFR, with local MVFR possible. Breezy. 

Friday: VFR. Breezy. 

Friday Night through Saturday: VFR. 

Saturday Night: Mainly VFR, with local MVFR possible. 

Sunday: VFR. Breezy. 

&&

.MARINE...
Forecaster Confidence Levels...

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


High confidence through the end of the week.

Pressure gradient between slow-moving low pressure SE of the 40/70 
benchmark and high pressure over the Canadian Maritimes keeps E/NE 
winds in play through the end of the week. 

NE winds may approach SCA around Cape Cod with 20kt gusts. Main 
issue will be the long fetch of NE winds resulting in rough 
seas of 5 to 8 feet on outer waters through Thu where SCA 
remains posted. May have to extend it into Rhode Island and 
Block Island Sounds should confidence increase in later 
forecasts.


Outlook /Thursday Night through Sunday/...

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

Friday through Friday Night: Winds less than 25 kt. Seas up to
5 ft. 

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

Saturday Night: Winds less than 25 kt. Seas locally approaching
5 ft. Slight chance of rain showers. 

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

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 AM EDT Friday for ANZ250-254>256.

&&

$$

DISCUSSION...FT
AVIATION...FT
MARINE...FT

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