Lexington Weather

Current Conditions [‒] Current Conditions [+]

47.3°F Warmer than last hour.

8.5°C

Chilly

Mist, Overcast

This Afternoon: Hi 60 °F

Tonight: Lo 36 °F

Dew Point: 46.2°F Increased 0.9°F since last hour .

Humidity: 96%

Air Quality Index: 30

Good

(Fine Particles)

Barometer: 29.70 in Falling 0.03 inHg/hr

1006 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.05 in

Rain Saturday: 0.00 in

Visibility: 1¾ miles

Wind:

Now: Calm

Avg: Calm

Gusts: 3 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

Expected Snow [‒] Expected Snow [+]

Tap Click image to go to NWS winter weather page

Trace of snow expected in Lexington.

Forecast [‒] Forecast [+]

Daily Forecast
Hourly Forecast

NWS Weather Forecast -
This Afternoon, Tonight, & Monday through Saturday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sun Apr 5, 2026 1:11pm EDT

This Afternoon:

Showers And T-Storms

Hi 60 °F

This Afternoon: Showers And Thunderstorms

Showers and thunderstorms. Cloudy, with a high near 60. Southwest wind 6 to 9 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.

Tonight:

Chance Rain Showers then Partly Cloudy

Lo 36 °F

A chance of rain showers before 9pm. Partly cloudy, with a low around 36. West wind 8 to 14 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

Monday:

Mostly Sunny

Hi 51 °F

Mostly sunny, with a high near 51. West wind around 16 mph, with gusts as high as 28 mph.

Monday Night:

Mostly Cloudy then Chance Snow Showers

Lo 33 °F

A chance of snow showers between 2am and 5am, then a chance of rain and snow showers. Mostly cloudy, with a low around 33. West wind 3 to 14 mph. Chance of precipitation is 20%.

Tuesday:

Chance Rain And Snow Showers

Hi 47 °F

A chance of rain and snow showers. Partly sunny, with a high near 47. Northwest wind 3 to 10 mph. Chance of precipitation is 50%.

Tuesday Night:

Chance Snow Showers then Mostly Clear

Lo 26 °F

A chance of snow showers before 8pm. Mostly clear, with a low around 26. Northwest wind 6 to 9 mph. Chance of precipitation is 30%.

Wednesday:

Sunny

Hi 49 °F

Sunny, with a high near 49. Southwest wind around 7 mph.

Wednesday Night:

Mostly Clear

Lo 32 °F

Mostly clear, with a low around 32. South wind around 7 mph.

Thursday:

Sunny

Hi 58 °F

Sunny, with a high near 58. South wind 5 to 12 mph, with gusts as high as 22 mph.

Thursday Night:

Partly Cloudy

Lo 43 °F

Partly cloudy, with a low around 43. South wind 6 to 10 mph.

Friday:

Mostly Sunny

Hi 68 °F

Mostly sunny, with a high near 68. Southwest wind 6 to 9 mph.

Friday Night:

Partly Cloudy

Lo 46 °F

Partly cloudy, with a low around 46. Southwest wind around 8 mph.

Saturday:

Partly Sunny then Slight Chance Rain Showers

Hi 65 °F

A slight chance of rain showers after 2pm. Partly sunny, with a high near 65. Southwest wind around 8 mph.

Saturday Night:

Slight Chance Rain Showers then Mostly Cloudy

Lo 45 °F

A slight chance of rain showers before 8pm. Mostly cloudy, with a low around 45. West wind around 7 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Tue 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Sun Apr 5, 2026 1:11pm EDT

2:00pm

Rain Showers

60°F
Dew Pt 54°F
Wind from SW

SW 9 mph
Precip: 96%
Rain: 0.05 in

3:00pm

Rain Showers

60°F
Dew Pt 54°F
Wind from SW

SW 6 mph
Precip: 92%
Rain: 0.05 in

4:00pm

Rain Showers

60°F
Dew Pt 53°F
Wind from SW

SW 9 mph
Precip: 87%
Rain: 0.05 in

5:00pm

Rain Showers Likely

59°F
Dew Pt 53°F
Wind from SW

SW 8 mph
Precip: 77%
Rain: 0.04 in

6:00pm

Chance Rain Showers

58°F
Dew Pt 52°F
Wind from SW

SW 10 mph
Precip: 67%
Rain: 0.03 in

7:00pm

Chance Rain Showers

57°F
Dew Pt 50°F
Wind from W

W 12 mph
Precip: 39%
Rain: 0.02 in

8:00pm

Slight Chance Rain Showers

53°F
Dew Pt 48°F
Wind from W

W 8 mph
Precip: 11%

9:00pm

Mostly Cloudy

52°F
Dew Pt 44°F
Wind from W

W 8 mph
Precip: 6%

10:00pm

Mostly Cloudy

50°F
Dew Pt 40°F
Wind Chill: 46°F
Wind from W

W 9 mph
Precip: 1%

11:00pm

Mostly Cloudy

48°F
Dew Pt 37°F
Wind Chill: 44°F
Wind from W

W 9 mph
Precip: 0%

Mon
12:00am

Mostly Cloudy

45°F
Dew Pt 35°F
Wind Chill: 40°F
Wind from W

W 9 mph
Precip: 0%

Mon
1:00am

Partly Cloudy

44°F
Dew Pt 34°F
Wind Chill: 39°F
Wind from W

W 9 mph
Precip: 0%

Mon
2:00am

Mostly Clear

42°F
Dew Pt 33°F
Wind Chill: 36°F
Wind from W

W 12 mph
Precip: 0%

Mon
3:00am

Mostly Clear

41°F
Dew Pt 31°F
Wind Chill: 34°F
Wind from W

W 12 mph
Precip: 0%

Mon
4:00am

Clear

38°F
Dew Pt 30°F
Wind Chill: 30°F
Wind from W

W 13 mph
Precip: 0%

Mon
5:00am

Clear

38°F
Dew Pt 28°F
Wind Chill: 30°F
Wind from W

W 14 mph
Precip: 0%

Mon
6:00am

Sunny

38°F
Dew Pt 28°F
Wind Chill: 30°F
Wind from W

W 14 mph
Precip: 0%

Mon
7:00am

Sunny

37°F
Dew Pt 28°F
Wind Chill: 28°F
Wind from W

W 14 mph
Precip: 0%

Mon
8:00am

Sunny

38°F
Dew Pt 28°F
Wind Chill: 30°F
Wind from W

W 14 mph
Precip: 0%

Mon
9:00am

Sunny

40°F
Dew Pt 29°F
Wind Chill: 32°F
Wind from W

W 14 mph
Precip: 0%

Mon
10:00am

Mostly Sunny

43°F
Dew Pt 28°F
Wind Chill: 36°F
Wind from W

W 15 mph
Precip: 1%

Mon
11:00am

Mostly Sunny

46°F
Dew Pt 27°F
Wind Chill: 40°F
Wind from W

W 15 mph
Precip: 1%

Mon
12:00pm

Partly Sunny

48°F
Dew Pt 27°F
Wind Chill: 42°F
Wind from W

W 15 mph
Precip: 1%

Mon
1:00pm

Partly Sunny

49°F
Dew Pt 26°F
Wind Chill: 43°F
Wind from W

W 16 mph
Precip: 1%

Mon
2:00pm

Partly Sunny

49°F
Dew Pt 26°F
Wind Chill: 43°F
Wind from W

W 16 mph
Precip: 1%

Mon
3:00pm

Mostly Cloudy

50°F
Dew Pt 25°F
Wind Chill: 44°F
Wind from W

W 16 mph
Precip: 1%

Mon
4:00pm

Mostly Cloudy

51°F
Dew Pt 25°F
Wind from W

W 16 mph
Precip: 1%

Mon
5:00pm

Mostly Cloudy

50°F
Dew Pt 24°F
Wind Chill: 45°F
Wind from W

W 15 mph
Precip: 1%

Mon
6:00pm

Mostly Cloudy

49°F
Dew Pt 24°F
Wind Chill: 44°F
Wind from W

W 14 mph
Precip: 6%

Mon
7:00pm

Mostly Cloudy

47°F
Dew Pt 24°F
Wind Chill: 41°F
Wind from W

W 13 mph
Precip: 10%

Mon
8:00pm

Mostly Cloudy

45°F
Dew Pt 24°F
Wind Chill: 41°F
Wind from W

W 7 mph
Precip: 15%

Mon
9:00pm

Mostly Cloudy

43°F
Dew Pt 24°F
Wind Chill: 39°F
Wind from W

W 6 mph
Precip: 16%

Mon
10:00pm

Mostly Cloudy

42°F
Dew Pt 24°F
Wind Chill: 39°F
Wind from W

W 5 mph
Precip: 18%

Mon
11:00pm

Mostly Cloudy

40°F
Dew Pt 24°F
Wind Chill: 37°F
Wind from W

W 5 mph
Precip: 19%

Tue
12:00am

Mostly Cloudy

39°F
Dew Pt 24°F
Wind Chill: 37°F
Wind from W

W 3 mph
Precip: 20%

Tue
1:00am

Mostly Cloudy

37°F
Dew Pt 25°F
Wind Chill: 34°F
Wind from W

W 3 mph
Precip: 21%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 051519
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
1119 AM EDT Sun Apr 5 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...

- A few showers early this morning, then more widespread 
  showers move through SNE this afternoon into early evening 
  associated with a cold front.

- Clearing and colder overnight, then blustery Monday.

- Could see a few rain/snow showers Monday night into
  Tuesdaymorning, but otherwise expecting cooler temperatures
  and dry weather for a good portion of next week.

- Second half of next week looks mainly dry with temperatures on
  the rise.

&&

.DISCUSSION...
KEY MESSAGE 1...A few showers this morning, then more 
widespread showers move through SNE this afternoon into early 
evening associated with a cold front.

The backdoor front which moved through SNE Saturday will return
northward as a warm front later this morning. Modest low level 
jet combined with marginal elevated instability will bring a few
showers this morning and possibly a rumble of thunder. Lots of 
stratus and fog also expected this morning with abundant low 
level moisture trapped within a strong surface inversion. The 
fog should lift later this morning and afternoon as SW flow 
develops but stratus may linger as low level moisture is 
persistent. The surface inversion eventually erodes in the 
afternoon but mixed layer is quite shallow. This combined with 
cloud cover and showers will limit how mild it gets, expecting 
highs reaching upper 50s and lower 60s, but cooler along the 
south coast. It will also be breezy over the Cape/Islands with 
low level jet across the region, expecting gusts to 35 mph at 
times. 

We expect a period of widespread rain moving west to east 
across SNE during the afternoon as a cold front moves through. 
The cold front will be accompanied by a deep moisture plume with
PWATs 1-1.5" and right entrance region of upper jet so a period
of widespread showers is likely. Marginal elevated instability 
is also present so can't rule out an isolated t-storm. The bulk 
of the showers should end by late afternoon, but will linger 
into the evening across SE MA and Cape/Islands with later timing
of cold front. 

KEY MESSAGE 2...Clearing and colder overnight, then blustery 
Monday.

Cold front moves across the Cape/Islands in the evening then 
offshore overnight. The frontal passage will be followed by 
clearing and colder conditions and it will become blustery 
overnight in the cold advection pattern. Lows will drop into the
30s. Blustery but dry weather continues Monday with soundings 
showing a deepening and well mixed boundary layer supporting 
gusts to 35 mph at times. Diurnal cu will develop as upper 
trough and cooling temps aloft move through. Highs will range 
from the upper 40s to lower 50s which is near or slightly below 
normal for early April.

KEY MESSAGE 3...Could see a few rain/snow showers Monday night 
into Tuesday morning, but otherwise expecting cooler 
temperatures and dry weather for a good portion of next week. 

Expecting an upper-level trough to push across the Great Lakes 
and into New England early next week, leading to mostly dry 
weather and cooler temperatures. Ensemble guidance is indicating
850mb temperatures could get to below -5C and 500mb 
temperatures below - 30C Tuesday as a shortwave moves through, 
which would support some light snow showers developing and 
mixing in with rain showers, especially over the higher 
elevation areas, though we're not expecting any road or travel 
impacts. Surface temperatures will likely hover near or possibly
just below freezing Monday night into Tuesday morning, but 
they're expected to make a fast recovery later Tuesday 
morning... into the mid 40s. Otherwise, dry weather with high 
temps mainly in the middle 40s to the lower 50s and overnight 
temperatures ranging from the mid 20s to mid 30s through 
Wednesday night.

KEY MESSAGE 4...Second half of next week looks mainly dry with 
temperatures on the rise.

A large high pressure system moves into the Mid-Atlantic region
by the second half of next week, bringing predominantly 
southwesterly flow and dry conditions back to southern New 
England. The warmer airmass advecting into the region will allow
temperatures to recover back into the 50s and 60s by the end of
the week.

&&

.AVIATION /14Z SUNDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...

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

15z TAF Update: 

Today: Moderate confidence. 

Generally IFR/LIFR due to stratus, mist and areas of fog until
cold frontal passage (approx. 17-22z west to east). After 15z, 
lowest visbys (3/4 to 2 SM) become more driven by where winds 
are light and variable: mainly for TAFs north and west of I-95. 
Foggy conditions should improve more toward the South Coast, 
Cape and Islands where SW winds have increased to around 10-13 
kt with gusts 25-30 kt. 

Cold front moving into western New England around 17-18z then 
brings widespread rains and improvement in visbys reduced by fog
into the MVFR- visby range as it moves east. Wouldn't rule out a
rumble of thunder mainly in CT but the risk for thunder has 
decreased. Front should have made it to the eastern/southeast 
New England coast by the end of the TAF period. Post-frontal, 
expect lifting of ceilings into the SCT-BKN VFR range and winds 
becoming NW and increasing to around 10 kt.

Tonight: High confidence. 

Leftover MVFR ceilings should scatter out to VFR all areas 
early. NW winds increase to 10-15 kt with developing gusts to 25
kt after midnight.

Monday: High confidence.

Mainly VFR; for the interior higher terrain, wouldn't rule out 
some MVFR bases interior high terrain in the aftn as disturbance
aloft approaches and there could be some hit-or-mostly-miss 
sprinkles or flurries. Main concern for aviation is gusty NW 
winds, around 12-17 kt with gusts 25-35 kt, highest at ORH. 

Monday Night: High confidence overall, though moderate on
possible precip chances. 

Disturbance aloft moves through Southern New England Mon night,
which will bring at least SCT-OVC mainly VFR ceilings. Less
clear if we can wring out any precip; if we do, potential for
brief periods of MVFR visby -SHSN. NW winds decrease to 8-12 kt
with gusts in low 20s kt range.

KBOS Terminal...Moderate confidence. Mainly LIFR until frontal
passage, am pessimistic on ceilings/visbys getting any better 
than IFR with light south winds, calm at times. Widespread rain 
at MVFR visbys around 19-22z with arrival of cold front. 
Clearing to VFR likely into the early evening with NW winds 
increasing to around 10-13 kt before midnight, with gusts to 25
kt toward daybreak Mon.

KBDL Terminal...Moderate confidence. Mainly LIFR until frontal
passage, am pessimistic on ceilings/visbys getting any better 
than IFR with light northerly drainage wind, calm at times. 
Widespread rain at MVFR visbys around 18-21z with arrival of 
cold front. Clearing to VFR likely by sundown, with NW winds 
increasing to around 10-15 kt late evening, with gusts to 25 kt
toward daybreak Mon.

Outlook /Monday Night through Thursday/...

Monday Night: VFR. Chance SHRA, chance SHSN.

Tuesday: Breezy. Chance SHRA, chance SHSN.

Tuesday Night: Breezy. 

Wednesday through Wednesday Night: 

Thursday: Breezy.

&&

.MARINE...
Forecaster Confidence Levels...

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

High confidence.

Gusty pre-frontal SW winds today with gusts to 25-35 kt as LLJ will 
be over the waters. Will continue SCA although a few near gale force 
gusts possible. The LLJ moves offshore tonight but expect post-
frontal W gusts to 25 kt late tonight and Monday. Areas of fog this 
morning with poor vsbys, then showers mid afternoon into this 
evening. An isolated t-storm is possible.

Outlook /Monday Night through Thursday/...

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

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

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

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

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

Thursday: Winds less than 25 kt. Seas up to 5 ft.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for 
     ANZ230>234-236-251.
     Small Craft Advisory until 2 AM EDT Monday for ANZ235-237.
     Small Craft Advisory until 2 PM EDT Monday for ANZ250.
     Small Craft Advisory until 8 PM EDT Monday for ANZ254>256.

&&

$$

DISCUSSION...KJC/McMinn
AVIATION...Loconto
MARINE...KJC

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