Lexington Weather

Current Conditions [‒] Current Conditions [+]

60.1°F Warmer than last hour.

15.6°C

Cool

Light rain, Mist, Overcast

Today: Hi 63 °F

Tonight: Lo 39 °F

Dew Point: 59.0°F Increased 0.5°F since last hour .

Humidity: 96%

Air Quality Index: 25

Good

(Ozone)

Barometer: 29.65 in Falling 0.03 inHg/hr

1004 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.75 in

Rain Sunday: 0.00 in

Visibility: 3 miles

Wind:

Now: 5 mph

Avg: 3 mph

Gusts: 9 mph

OTHER PERSONAL WEATHER STATIONS

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

Southeast Middlesex County, MA - High Wind Warning - Flood Watch
- SEE ALL NEARBY ALERTS -

NWS Weather Forecast -
Today, Tonight, & Tuesday through Sunday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Mon Mar 16, 2026 2:30am EDT

Flood Watch
High Wind Warning

Today:

Rain

Hi 63 °F

Rain and patchy fog before 8am, then rain and patchy fog and a slight chance of thunderstorms between 8am and 11am, then rain likely and a chance of thunderstorms and patchy fog. Cloudy, with a high near 63. South wind 10 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Tonight:

Rain

Lo 39 °F

Rain and a slight chance of thunderstorms before 9pm, then rain and patchy fog. Cloudy. Low around 39, with temperatures rising to around 54 overnight. South wind 15 to 22 mph, with gusts as high as 56 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Tuesday:

Mostly Sunny

Hi 43 °F

Mostly sunny, with a high near 43. West wind around 16 mph, with gusts as high as 31 mph. New rainfall amounts less than a tenth of an inch possible.

Tuesday Night:

Mostly Clear

Lo 23 °F

Mostly clear, with a low around 23. West wind 9 to 13 mph, with gusts as high as 26 mph.

Wednesday:

Mostly Sunny

Hi 38 °F

Mostly sunny, with a high near 38. West wind 6 to 9 mph.

Wednesday Night:

Mostly Cloudy

Lo 27 °F

Mostly cloudy, with a low around 27. South wind around 6 mph.

Thursday:

Partly Sunny

Hi 45 °F

Partly sunny, with a high near 45. South wind 3 to 9 mph.

Thursday Night:

Partly Cloudy then Slight Chance Light Snow

Lo 32 °F

A slight chance of snow between 2am and 5am, then a slight chance of rain. Partly cloudy, with a low around 32. South wind around 8 mph.

Friday:

Slight Chance Light Rain

Hi 51 °F

A slight chance of rain before 4pm. Partly sunny, with a high near 51. Southwest wind 6 to 9 mph.

Friday Night:

Mostly Cloudy then Slight Chance Rain And Snow

Lo 31 °F

A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 31. West wind around 8 mph.

Saturday:

Chance Rain And Snow

Hi 47 °F

A chance of rain and snow. Mostly cloudy, with a high near 47. West wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New snow accumulation of less than half an inch possible.

Saturday Night:

Chance Rain And Snow

Lo 29 °F

A chance of rain and snow. Mostly cloudy, with a low around 29. West wind around 9 mph. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.

Sunday:

Chance Light Snow

Hi 43 °F

A chance of snow before 5pm, then a chance of rain and snow. Partly sunny, with a high near 43. Northwest wind 8 to 12 mph. Chance of precipitation is 30%. New snow accumulation of around one inch possible.

Sunday Night:

Chance Rain And Snow

Lo 28 °F

A chance of rain and snow before 2am. Mostly cloudy, with a low around 28. Northwest wind around 9 mph. New snow accumulation of less than half an inch possible.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Wed 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Mon Mar 16, 2026 2:30am EDT

2:00pm

Rain Likely

59°F
Dew Pt 54°F
Wind from S

S 14 mph
Precip: 73%
Rain: 0.04 in

3:00pm

Light Rain Likely

61°F
Dew Pt 54°F
Wind from S

S 14 mph
Precip: 64%
Rain: 0.03 in

4:00pm

Light Rain Likely

61°F
Dew Pt 54°F
Wind from S

S 14 mph
Precip: 66%
Rain: 0.03 in

5:00pm

Rain Likely

61°F
Dew Pt 54°F
Wind from S

S 14 mph
Precip: 73%
Rain: 0.04 in

6:00pm

Rain

62°F
Dew Pt 55°F
Wind from S

S 15 mph
Precip: 80%
Rain: 0.04 in

7:00pm

Rain

61°F
Dew Pt 56°F
Wind from S

S 15 mph
Precip: 83%
Rain: 0.04 in

8:00pm

Rain

61°F
Dew Pt 55°F
Wind from S

S 17 mph
Precip: 84%
Rain: 0.08 in

9:00pm

Rain

60°F
Dew Pt 56°F
Wind from S

S 20 mph
Precip: 92%
Rain: 0.08 in

10:00pm

Rain

61°F
Dew Pt 57°F
Wind from S

S 21 mph
Precip: 96%
Rain: 0.09 in

11:00pm

Rain

62°F
Dew Pt 57°F
Wind from S

S 22 mph
Precip: 83%
Rain: 0.08 in

Tue
12:00am

Rain

61°F
Dew Pt 57°F
Wind from S

S 21 mph
Precip: 88%
Rain: 0.08 in

Tue
1:00am

Rain

62°F
Dew Pt 57°F
Wind from S

S 22 mph
Precip: 88%
Rain: 0.08 in

Tue
2:00am

Light Rain

61°F
Dew Pt 57°F
Wind from S

S 22 mph
Precip: 88%
Rain: 0.02 in

Tue
3:00am

Light Rain

60°F
Dew Pt 55°F
Wind from S

S 18 mph
Precip: 81%
Rain: 0.02 in

Tue
4:00am

Chance Light Rain

57°F
Dew Pt 52°F
Wind from SW

SW 17 mph
Precip: 54%
Rain: 0.01 in

Tue
5:00am

Slight Chance Light Rain

54°F
Dew Pt 49°F
Wind from SW

SW 16 mph
Precip: 23%

Tue
6:00am

Mostly Cloudy

48°F
Dew Pt 44°F
Wind Chill: 42°F
Wind from SW

SW 16 mph
Precip: 9%

Tue
7:00am

Partly Sunny

44°F
Dew Pt 39°F
Wind Chill: 37°F
Wind from SW

SW 15 mph
Precip: 6%

Tue
8:00am

Mostly Sunny

41°F
Dew Pt 33°F
Wind Chill: 33°F
Wind from W

W 15 mph
Precip: 3%
Rain: 0.01 in

Tue
9:00am

Mostly Sunny

40°F
Dew Pt 31°F
Wind Chill: 32°F
Wind from W

W 15 mph
Precip: 3%
Rain: 0.01 in

Tue
10:00am

Mostly Sunny

40°F
Dew Pt 28°F
Wind Chill: 32°F
Wind from W

W 15 mph
Precip: 4%
Rain: 0.01 in

Tue
11:00am

Sunny

41°F
Dew Pt 24°F
Wind Chill: 33°F
Wind from W

W 15 mph
Precip: 5%

Tue
12:00pm

Sunny

42°F
Dew Pt 22°F
Wind Chill: 34°F
Wind from W

W 15 mph
Precip: 4%
Rain: 0.01 in

Tue
1:00pm

Sunny

42°F
Dew Pt 20°F
Wind Chill: 34°F
Wind from W

W 15 mph
Precip: 4%
Rain: 0.01 in

Tue
2:00pm

Sunny

43°F
Dew Pt 19°F
Wind Chill: 36°F
Wind from W

W 15 mph
Precip: 3%

Tue
3:00pm

Sunny

43°F
Dew Pt 17°F
Wind Chill: 36°F
Wind from W

W 14 mph
Precip: 2%

Tue
4:00pm

Mostly Sunny

42°F
Dew Pt 16°F
Wind Chill: 35°F
Wind from W

W 14 mph
Precip: 2%

Tue
5:00pm

Mostly Sunny

41°F
Dew Pt 15°F
Wind Chill: 33°F
Wind from W

W 14 mph
Precip: 1%

Tue
6:00pm

Partly Cloudy

39°F
Dew Pt 15°F
Wind Chill: 31°F
Wind from W

W 13 mph
Precip: 1%

Tue
7:00pm

Partly Cloudy

36°F
Dew Pt 14°F
Wind Chill: 28°F
Wind from W

W 12 mph
Precip: 1%

Tue
8:00pm

Partly Cloudy

34°F
Dew Pt 14°F
Wind Chill: 26°F
Wind from W

W 10 mph
Precip: 0%

Tue
9:00pm

Mostly Clear

32°F
Dew Pt 13°F
Wind Chill: 24°F
Wind from W

W 10 mph
Precip: 0%

Tue
10:00pm

Mostly Clear

30°F
Dew Pt 11°F
Wind Chill: 21°F
Wind from W

W 10 mph
Precip: 0%

Tue
11:00pm

Mostly Clear

29°F
Dew Pt 10°F
Wind Chill: 20°F
Wind from W

W 10 mph
Precip: 0%

Wed
12:00am

Mostly Clear

28°F
Dew Pt 9°F
Wind Chill: 19°F
Wind from W

W 10 mph
Precip: 0%

Wed
1:00am

Mostly Clear

27°F
Dew Pt 9°F
Wind Chill: 17°F
Wind from W

W 10 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 161712
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
112 PM EDT Mon Mar 16 2026

.WHAT HAS CHANGED...
High Wind Watches have been upgraded to High Wind Warnings across 
eastern MA and RI.

&&

.KEY MESSAGES...

- Periods of heavy rain with embedded t-storms today, 
  especially tonight, may lead to river and small stream 
  flooding. Poor drainage in urban areas could flood as well.

- A period of strong to damaging winds across SNE tonight. 

- Mainly dry and trending colder Tue into Wed, then moderating 
  temperatures Thu and especially Fri.

- Unsettled pattern from Fri night through the weekend with a 
  chance of showers at times.

&&

.DISCUSSION...
KEY MESSAGE 1...Periods of heavy rain with embedded t-storms 
Monday, especially Monday night, may lead to some river and 
small stream flooding. Poor drainage in urban areas could flood 
as well.

A deepening low moving across the Great Lakes today will bring the 
potential for heavy rain, flooding, embedded thunderstorms, and 
damaging winds to southern New England today into tonight. Starting 
with the rain and flooding, a warm front lifts through the region 
this morning, advecting in warmer air and moisture from the south. A 
strong LLJ with speeds topping out around 80-90 kt at 925 mb will 
only reinforce this WAA; 925 mb temperatures increase to 10C-15C 
across southern New England during the afternoon. Surface 
temperatures could reach the 60s today across the region. NAEFS 
ensemble guidance the last few runs has also shown significantly 
above normal IVT during this period, around 6-8 SD above normal over 
the region by 00z Tuesday. Guidance has also continued to show a 
good amount of elevated MUCAPE ranging between 200-600 J/kg with the 
higher amounts in CT, RI, and up into parts of central MA during the 
afternoon. This coupled with the strong LLJ at 925 mb would be 
supportive of some rumbles of thunder and more convective elements 
that could lead to heavier rainfall where any t-storms develop. 
Outside of these areas, mostly light to moderate rainfall is 
expected today into tonight. Totals will likely fall in the 2-3" 
range with localized 4"+ possible where any heavier downpours 
develop.

KEY MESSAGE 2...A period of strong to damaging across SNE tonight.

Strong signal for a period of strong to damaging wind gusts tonight 
across SNE as anomalous low level jet lifts across the region. Hi-
res guidance indicating solid 80-90 kt LLJ at 925 mb moving up along 
the SNE coast 03-06z then exiting Cape Cod by 09z so looking at 
about a 3-4 hr window of peak winds. The challenge is how much of 
this jet will mix down to the surface as we will be dealing with a 
low level inversion. How mild it gets will be a big factor and 
soundings suggest damaging wind potential will increase considerably 
with temps 60F or higher. Given that we have increased confidence of 
temps near 60F this evening especially away from the immediate south 
coast, these mild temps should weaken the inversion enough for a 
period of damaging winds. Also there is quite a pressure fall rise 
couplet along the cold front which may also help to enhance winds 
near and along the boundary. As a result we upgraded the High Wind 
Watches to High Wind Warnings for eastern MA and RI where the 
strongest winds are expected in the vicinity of max low level winds. 
Potential for 55-65 mph gusts in this area and this is supported by 
HREF mean wind gusts. Low risk for a gust to 70 mph across southern 
RI and SE MA. Kept the wind advisories for the rest of SNE for a 
period of 45-55 mph gusts. Strongest gusts in the interior should be 
across CT and adjacent areas of central MA where a few 55-60 mph 
gust are possible. 

Hi-res CAMs do show a robust fine line to the west late afternoon 
and and early evening where there is modest surface instability. 
However, this fine line is expected to weaken as it moves into SNE 
later tonight as instability here is elevated above the boundary 
layer. However the CAMs are showing numerous convective elements 
moving into SNE tonight which could help to bring stronger winds to 
the surface. 

KEY MESSAGE 3...Mainly dry and trending colder Tue into Wed, then 
moderating temperatures Thu and especially Fri.

The cold front will be well east of the coast by daybreak Tue with 
much drier air moving into the region. Expect mostly sunny skies but 
some diurnal CU as well as cooling temps aloft move into the region. 
The cold advection aloft will help to deepen the boundary layer 
which will support gusty W winds with gusts 25-35 mph. Highs will be 
mostly in the low-mid 40s, with 30s higher elevations. 

The core of the coldest air will be Tue night into Wed as 850 mb 
temps bottom out at -15 to -18C around 12z Wed. Lows Tue night will 
drop into the teens and low 20s with high only in the 30s on Wed. 
Winds however will be diminishing late Tue night into Wed as high 
pres builds into the region. Still these temps will be about 10 
degrees below normal for mid March. Temps moderate Thu and 
especially Fri as the high moves offshore with SW flow developing. 
Highs should reach into the 50s on Fri ahead of an approaching cold 
front. 

KEY MESSAGE 4...Unsettled pattern from Fri night through the weekend 
with a chance of showers at times.

Fairly active pattern setting up for next weekend as multiple 
northern stream shortwaves will be rotating SE toward New Eng. 
Timing and amplitude of these shortwaves are not certain so low 
confidence on details but it does appear next weekend will be an 
unsettled period as a series of frontal systems move into the 
region.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
Forecaster Confidence Levels...

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

18Z update...

This afternoon...High Confidence

IFR. Southerly winds gusting 30-35 kts late afternoon and 
evening. Scattered TSRA is increasingly likely particularly in 
CT and RI into northeat MA. 

Tonight...High Confidence. 

Peak of the winds, gusting gusting 40-55kts for several hours. 
S winds become more SW and W by 12Z. RA/TSRA possible through 
07-12z, ending from west to east. 

Tuesday...High Confidence

VFR. Region clears out behind cold front. Gusty W winds around 
25-30 kt are left in its wake.

Tuesday night...High Confidence. 

VFR. W winds 5-10 kts. 

KBOS Terminal...Moderate confidence.

KBDL Terminal...Moderate confidence.

Outlook /Wednesday through Saturday/...

Wednesday through Thursday: VFR. 

Thursday Night: Slight chance RA, slight chance SN.

Friday: Breezy. Slight chance RA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Tuesday

Winds ramp back up today into tonight as a powerful low pressure 
system approaches from the west. Seas increase considerably headed 
into tonight, reaching up to 15 ft and even close to 20 ft in the 
southern waters by 06z Tuesday. Seas 7-10 ft will be more common in 
the eastern waters. Winds will very likely reach storm conditions 
tonight. Storm Warnings are in effect for all waters. 

Seas decrease to around 12 ft for Tuesday as the cold front exits 
over the waters. W winds remain gusty to around 35 kt through the 
day Tuesday.

Outlook /Tuesday Night through Saturday/...

Tuesday Night: Moderate risk for Small Craft Advisory winds
with gusts up to 25 kt. Rough seas up to 12 ft. 

Wednesday: Winds less than 25 kt. Areas of rough seas. 

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

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

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

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

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Flood Watch through Tuesday morning for CTZ002>004.
     Wind Advisory until 8 AM EDT Tuesday for CTZ002>004.
MA...Flood Watch through Tuesday morning for MAZ002>022-026.
     Wind Advisory until 8 AM EDT Tuesday for MAZ002>004-008>012-
     026.
     High Wind Warning from 5 PM this afternoon to 6 AM EDT Tuesday 
     for MAZ005>007-013>024.
RI...Flood Watch through Tuesday morning for RIZ001>007.
     High Wind Warning from 5 PM this afternoon to 6 AM EDT Tuesday 
     for RIZ001>008.
MARINE...Storm Warning from 8 PM this evening to 5 AM EDT Tuesday for 
     ANZ230-236.
     Storm Warning from 5 PM this afternoon to 8 AM EDT Tuesday for 
     ANZ231>235-237-250-251-254>256.

&&

$$

DISCUSSION...KJC/Hrencecin
AVIATION...BW/McMinn
MARINE...Hrencecin

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