Lexington Weather

Current Conditions [‒] Current Conditions [+]

34.0°F Warmer than last hour.

1.1°C

Cold

Clear

This Afternoon: Hi 38 °F

Tonight: Lo 22 °F

Dew Point: 7.9°F Decreased 1.1°F since last hour.

Humidity: 33% Decreased 4.0% since last hour.

Air Quality Index: 31

Good

(Ozone)

Barometer: 30.31 in S

1026 mb

Snow Today: 0.0 in

Snow Tuesday: 0.0 in

March: 2.4 in

Winter: 50.9 in

Depth: 0.0 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 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 Mar 18, 2026 1:22pm EDT

This Afternoon:

Partly Sunny

Hi 38 °F

Partly sunny, with a high near 38. Northwest wind around 5 mph.

Tonight:

Partly Cloudy

Lo 22 °F

Partly cloudy, with a low around 22. South wind 2 to 6 mph.

Thursday:

Mostly Sunny

Hi 44 °F

Mostly sunny, with a high near 44. South wind 2 to 7 mph.

Thursday Night:

Partly Cloudy

Lo 31 °F

Partly cloudy, with a low around 31. South wind around 6 mph.

Friday:

Mostly Sunny

Hi 53 °F

Mostly sunny, with a high near 53. Southwest wind around 7 mph.

Friday Night:

Light Rain Likely

Lo 39 °F

Rain likely after 8pm. Mostly cloudy, with a low around 39. South wind around 7 mph. Chance of precipitation is 70%.

Saturday:

Light Rain Likely

Hi 53 °F

Rain likely before 2pm. Mostly cloudy, with a high near 53. Southwest wind 7 to 10 mph. Chance of precipitation is 60%.

Saturday Night:

Mostly Cloudy then Slight Chance Light Rain

Lo 39 °F

A slight chance of rain after 4am. Mostly cloudy, with a low around 39. Southwest wind around 8 mph.

Sunday:

Chance Light Rain

Hi 57 °F

A chance of rain. Mostly cloudy, with a high near 57. West wind 7 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

Sunday Night:

Chance Light Rain then Slight Chance Light Snow

Lo 32 °F

A chance of rain before 4am, then a slight chance of snow. Partly cloudy, with a low around 32. Northwest wind around 10 mph. Chance of precipitation is 30%.

Monday:

Mostly Sunny

Hi 41 °F

Mostly sunny, with a high near 41. North wind around 10 mph, with gusts as high as 21 mph.

Monday Night:

Mostly Clear

Lo 26 °F

Mostly clear, with a low around 26. North wind 6 to 9 mph.

Tuesday:

Partly Sunny

Hi 41 °F

Partly sunny, with a high near 41. West wind 6 to 10 mph.

Tuesday Night:

Mostly Cloudy

Lo 28 °F

Mostly cloudy, with a low around 28. Southwest wind around 9 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Fri 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Wed Mar 18, 2026 1:22pm EDT

2:00pm

Mostly Cloudy

34°F
Dew Pt 4°F
Wind Chill: 31°F
Wind from NW

NW 3 mph
Precip: 0%

3:00pm

Partly Sunny

36°F
Dew Pt 5°F
Wind Chill: 33°F
Wind from W

W 3 mph
Precip: 0%

4:00pm

Partly Sunny

36°F
Dew Pt 6°F
Wind Chill: 32°F
Wind from S

S 5 mph
Precip: 0%

5:00pm

Mostly Sunny

36°F
Dew Pt 7°F
Wind Chill: 32°F
Wind from S

S 5 mph
Precip: 0%

6:00pm

Partly Cloudy

35°F
Dew Pt 11°F
Wind Chill: 31°F
Wind from S

S 5 mph
Precip: 0%

7:00pm

Partly Cloudy

35°F
Dew Pt 14°F
Wind Chill: 30°F
Wind from SE

SE 6 mph
Precip: 0%

8:00pm

Mostly Cloudy

31°F
Dew Pt 10°F
Wind Chill: 26°F
Wind from SE

SE 6 mph
Precip: 0%

9:00pm

Partly Cloudy

29°F
Dew Pt 11°F
Wind Chill: 23°F
Wind from S

S 6 mph
Precip: 0%

10:00pm

Partly Cloudy

28°F
Dew Pt 12°F
Wind Chill: 22°F
Wind from S

S 6 mph
Precip: 0%

11:00pm

Mostly Clear

27°F
Dew Pt 12°F
Wind Chill: 22°F
Wind from S

S 5 mph
Precip: 0%

Thu
12:00am

Mostly Clear

26°F
Dew Pt 12°F
Wind Chill: 21°F
Wind from S

S 5 mph
Precip: 0%

Thu
1:00am

Mostly Clear

26°F
Dew Pt 12°F
Wind Chill: 22°F
Wind from S

S 3 mph
Precip: 0%

Thu
2:00am

Mostly Clear

26°F
Dew Pt 12°F
Wind Chill: 22°F
Wind from S

S 3 mph
Precip: 0%

Thu
3:00am

Partly Cloudy

25°F
Dew Pt 13°F
Wind from S

S 2 mph
Precip: 0%

Thu
4:00am

Partly Cloudy

25°F
Dew Pt 13°F
Wind from S

S 2 mph
Precip: 0%

Thu
5:00am

Partly Cloudy

25°F
Dew Pt 13°F
Wind from S

S 2 mph
Precip: 1%

Thu
6:00am

Mostly Sunny

25°F
Dew Pt 14°F
Wind from S

S 2 mph
Precip: 1%

Thu
7:00am

Mostly Sunny

26°F
Dew Pt 15°F
Wind from S

S 2 mph
Precip: 1%

Thu
8:00am

Mostly Sunny

26°F
Dew Pt 15°F
Wind from S

S 2 mph
Precip: 2%

Thu
9:00am

Mostly Sunny

28°F
Dew Pt 19°F
Wind Chill: 24°F
Wind from S

S 3 mph
Precip: 3%

Thu
10:00am

Mostly Sunny

31°F
Dew Pt 19°F
Wind Chill: 27°F
Wind from S

S 5 mph
Precip: 3%

Thu
11:00am

Sunny

35°F
Dew Pt 19°F
Wind Chill: 30°F
Wind from S

S 6 mph
Precip: 3%

Thu
12:00pm

Sunny

37°F
Dew Pt 20°F
Wind Chill: 32°F
Wind from S

S 6 mph
Precip: 3%

Thu
1:00pm

Mostly Sunny

39°F
Dew Pt 20°F
Wind Chill: 35°F
Wind from S

S 6 mph
Precip: 3%

Thu
2:00pm

Partly Sunny

41°F
Dew Pt 20°F
Wind Chill: 36°F
Wind from S

S 7 mph
Precip: 2%

Thu
3:00pm

Mostly Sunny

41°F
Dew Pt 21°F
Wind Chill: 37°F
Wind from S

S 7 mph
Precip: 3%

Thu
4:00pm

Partly Sunny

42°F
Dew Pt 22°F
Wind Chill: 37°F
Wind from SE

SE 7 mph
Precip: 3%

Thu
5:00pm

Partly Sunny

43°F
Dew Pt 22°F
Wind Chill: 39°F
Wind from S

S 7 mph
Precip: 3%

Thu
6:00pm

Mostly Cloudy

43°F
Dew Pt 23°F
Wind Chill: 39°F
Wind from S

S 6 mph
Precip: 3%

Thu
7:00pm

Mostly Cloudy

41°F
Dew Pt 24°F
Wind Chill: 37°F
Wind from S

S 6 mph
Precip: 3%

Thu
8:00pm

Mostly Cloudy

39°F
Dew Pt 24°F
Wind Chill: 35°F
Wind from S

S 6 mph
Precip: 1%

Thu
9:00pm

Mostly Cloudy

37°F
Dew Pt 24°F
Wind Chill: 32°F
Wind from S

S 6 mph
Precip: 1%

Thu
10:00pm

Partly Cloudy

35°F
Dew Pt 24°F
Wind Chill: 30°F
Wind from S

S 6 mph
Precip: 1%

Thu
11:00pm

Partly Cloudy

34°F
Dew Pt 25°F
Wind Chill: 30°F
Wind from S

S 6 mph
Precip: 1%

Fri
12:00am

Partly Cloudy

33°F
Dew Pt 25°F
Wind Chill: 29°F
Wind from S

S 5 mph
Precip: 1%

Fri
1:00am

Partly Cloudy

32°F
Dew Pt 25°F
Wind Chill: 28°F
Wind from SW

SW 5 mph
Precip: 1%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 181728
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
128 PM EDT Wed Mar 18 2026

.WHAT HAS CHANGED...

Flood Warning canceled for the Taunton River at Bridgewater, MA.
Otherwise no significant changes.

&&

.KEY MESSAGES...

- River and streams recede through Friday with dry weather and
  slowly moderating temperatures.

- Milder with scattered showers at times this weekend.

&&

.DISCUSSION...

KEY MESSAGE 1...River and streams recede through Friday with dry 
weather and slowly moderating temperatures.

Latest forecast shows the Taunton River at Bridgewater cresting just 
below its 8 foot flood stage through tonight, so the Flood Warning 
has been canceled. Along the mainstem Connecticut River, we expect 
to see slow rises with crests below flood stage Thursday or Friday.

Otherwise, high pressure will remain in control of our weather 
through Friday as it slowly heads offshore. This stretch of dry 
weather will allow river and stream levels to recede slowly for the 
next few days.

Despite high clouds tonight, very dry airmass in place along with 
light winds should allow for another cold night. The usual cold 
spots, including river valleys and even parts of the upper Cape and 
interior of Martha's Vineyard should see lows in teens tonight with 
20s elsewhere.

This latest shot of cold air will gradually retreat, with highs 
getting back into the 40s Thursday and into the 50s Friday thanks to 
S/SW flow. We should see sea breezes both days as the pressure 
gradient remains weak, so coastal areas will remain a bit cooler 
since water temperatures are still in the upper 30s to lower 40s.


KEY MESSAGE 2...Mild with scattered showers at times this weekend.

Zonal flow aloft this weekend gives way to broad trough developing 
over Northeast early next week as upper ridging builds over western 
third of country. This will bring a series of weak short waves 
through New England over weekend with two rounds of scattered 
showers, first being later Friday night into Saturday and the second 
in the Sunday-Monday timeframe. Not seeing any signals for heavy 
rainfall at this point and ensemble probabilities only have low 
chances (20-30%) of seeing more than 0.50". 

Certainly looks mild over weekend with highs in 50s both days, 
perhaps a few locations touch 60 Sunday, then temperatures 
return closer to normal early next week with highs in 40s. Some
of the guidance shows potential for some wet snow at tail end
Sunday night as colder air arrives but even if it does occur it
does not look to be impactful.

&&

.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. Light N winds give way to onshore winds along coast, before 
southerly winds prevail tonight and Thursday, with another round of 
sea breezes along coast.

KBOS Terminal...High confidence in TAF. 

KBDL Terminal...High confidence in TAF.

Outlook /Friday through Monday/...

Friday: VFR. 

Friday Night: MVFR/IFR conditions possible. Breezy. RA likely.

Saturday: Mainly VFR, with local IFR possible. Breezy. Chance
RA.

Saturday Night: Mainly VFR, with local MVFR possible. Breezy.
Slight chance RA.

Sunday: Mainly VFR, with local MVFR possible. Breezy. Chance
RA.

Sunday Night: VFR. Breezy. Chance RA, slight chance SN.

Monday: 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.

SCAs remain posted on outer waters for slowly diminishing seas, 
which should fall below 5 ft offshore Thursday morning. 
Otherwise high pressure remains in control of our weather 
through the end of the week with light S/SW winds and local sea 
breezes near shore.

Outlook /Friday through Monday/...

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

Friday Night: Winds less than 25 kt. Areas of seas approaching
5 ft. Chance of rain. 

Saturday: Winds less than 25 kt. Seas up to 5 ft. Chance of
rain. 

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

Sunday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain.

Sunday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas up to 5 ft. Chance of rain. 

Monday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of rough seas. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ235-
     237.
     Small Craft Advisory until 2 PM EDT Thursday for ANZ250-
     254>256.

&&

$$

DISCUSSION...JWD
AVIATION...JWD
MARINE...JWD

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