Lexington Weather

Current Conditions [‒] Current Conditions [+]

35.8°F Colder than last hour.

2.1°C

Cold

Clear

This Afternoon: Hi 37 °F

Tonight: Lo 7 °F

Dew Point: 14.9°F Decreased 1.8°F since last hour.

Humidity: 42% Decreased 1.0% since last hour.

Air Quality Index: 31

Good

(Ozone)

Barometer: 30.15 in Rising 0.02 inHg/hr

1021 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.03 in

Rain Saturday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sun Mar 1, 2026 12:20pm EST

This Afternoon:

Mostly Sunny

Hi 37 °F

Mostly sunny. High near 37, with temperatures falling to around 30 in the afternoon. Northwest wind around 9 mph.

Tonight:

Clear

Lo 7 °F

Clear, with a low around 7. Wind chill values as low as -1. Northwest wind around 7 mph.

Monday:

Sunny

Hi 27 °F

Sunny, with a high near 27. Wind chill values as low as -2. Northwest wind around 6 mph.

Monday Night:

Mostly Clear

Lo 15 °F

Mostly clear, with a low around 15. South wind around 6 mph.

Tuesday:

Partly Sunny then Light Rain Likely

Hi 39 °F

Rain likely after noon. Partly sunny, with a high near 39. South wind 6 to 9 mph. Chance of precipitation is 70%.

Tuesday Night:

Light Rain

Lo 32 °F

Rain. Cloudy, with a low around 32. Southwest wind around 5 mph. Chance of precipitation is 90%.

Wednesday:

Slight Chance Light Rain then Mostly Sunny

Hi 48 °F

A slight chance of rain before 8am. Mostly sunny, with a high near 48. North wind around 5 mph.

Wednesday Night:

Chance Light Rain

Lo 35 °F

A chance of rain. Mostly cloudy, with a low around 35. South wind around 3 mph. Chance of precipitation is 40%.

Thursday:

Chance Light Rain

Hi 49 °F

A chance of rain. Mostly cloudy, with a high near 49. Southeast wind around 6 mph. Chance of precipitation is 50%.

Thursday Night:

Light Rain Likely

Lo 35 °F

Rain likely. Mostly cloudy, with a low around 35. Northeast wind around 7 mph. Chance of precipitation is 70%.

Friday:

Light Rain Likely

Hi 40 °F

Rain likely. Cloudy, with a high near 40. Northeast wind around 8 mph. Chance of precipitation is 60%.

Friday Night:

Chance Light Rain

Lo 35 °F

A chance of rain. Cloudy, with a low around 35. East wind around 6 mph. Chance of precipitation is 40%.

Saturday:

Chance Light Rain

Hi 55 °F

A chance of rain. Mostly cloudy, with a high near 55. Southwest wind 5 to 8 mph. Chance of precipitation is 30%.

Saturday Night:

Chance Light Rain

Lo 41 °F

A chance of rain. Mostly cloudy, with a low around 41. Southwest wind around 8 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 4pm through Tue 3am

Issued by:
National Weather Service Boston / Norton, MA
Updated Sun Mar 1, 2026 12:20pm EST

4:00pm

Sunny

32°F
Dew Pt 16°F
Wind Chill: 25°F
Wind from NW

NW 8 mph
Precip: 0%

5:00pm

Sunny

30°F
Dew Pt 15°F
Wind Chill: 22°F
Wind from NW

NW 8 mph
Precip: 0%

6:00pm

Mostly Clear

28°F
Dew Pt 13°F
Wind Chill: 21°F
Wind from NW

NW 7 mph
Precip: 0%

7:00pm

Mostly Clear

26°F
Dew Pt 11°F
Wind Chill: 18°F
Wind from N

N 7 mph
Precip: 0%

8:00pm

Mostly Clear

24°F
Dew Pt 10°F
Wind Chill: 16°F
Wind from N

N 7 mph
Precip: 0%

9:00pm

Clear

22°F
Dew Pt 9°F
Wind Chill: 13°F
Wind from N

N 7 mph
Precip: 0%

10:00pm

Clear

19°F
Dew Pt 6°F
Wind Chill: 10°F
Wind from N

N 7 mph
Precip: 0%

11:00pm

Clear

18°F
Dew Pt 5°F
Wind Chill: 8°F
Wind from N

N 7 mph
Precip: 0%

Mon
12:00am

Clear

16°F
Dew Pt 3°F
Wind Chill: 6°F
Wind from NW

NW 7 mph
Precip: 0%

Mon
1:00am

Clear

14°F
Dew Pt 2°F
Wind Chill: 5°F
Wind from NW

NW 6 mph
Precip: 0%

Mon
2:00am

Clear

12°F
Dew Pt 1°F
Wind Chill: 2°F
Wind from NW

NW 6 mph
Precip: 0%

Mon
3:00am

Clear

11°F
Dew Pt 0°F
Wind Chill: 1°F
Wind from NW

NW 6 mph
Precip: 0%

Mon
4:00am

Clear

9°F
Dew Pt -1°F
Wind Chill: 0°F
Wind from NW

NW 6 mph
Precip: 0%

Mon
5:00am

Clear

9°F
Dew Pt -2°F
Wind Chill: -1°F
Wind from NW

NW 6 mph
Precip: 0%

Mon
6:00am

Sunny

9°F
Dew Pt -2°F
Wind Chill: -1°F
Wind from NW

NW 6 mph
Precip: 0%

Mon
7:00am

Sunny

7°F
Dew Pt -2°F
Wind Chill: -2°F
Wind from NW

NW 6 mph
Precip: 0%

Mon
8:00am

Sunny

10°F
Dew Pt -1°F
Wind Chill: 2°F
Wind from NW

NW 5 mph
Precip: 0%

Mon
9:00am

Sunny

13°F
Dew Pt 0°F
Wind Chill: 5°F
Wind from NW

NW 5 mph
Precip: 0%

Mon
10:00am

Sunny

16°F
Dew Pt 0°F
Wind Chill: 9°F
Wind from NW

NW 5 mph
Precip: 0%

Mon
11:00am

Sunny

19°F
Dew Pt 1°F
Wind Chill: 11°F
Wind from NW

NW 6 mph
Precip: 0%

Mon
12:00pm

Sunny

21°F
Dew Pt 2°F
Wind Chill: 15°F
Wind from NW

NW 5 mph
Precip: 0%

Mon
1:00pm

Sunny

23°F
Dew Pt 2°F
Wind Chill: 17°F
Wind from NW

NW 5 mph
Precip: 0%

Mon
2:00pm

Sunny

25°F
Dew Pt 3°F
Wind Chill: 20°F
Wind from W

W 5 mph
Precip: 0%

Mon
3:00pm

Sunny

26°F
Dew Pt 4°F
Wind Chill: 21°F
Wind from W

W 5 mph
Precip: 0%

Mon
4:00pm

Sunny

26°F
Dew Pt 6°F
Wind Chill: 21°F
Wind from W

W 5 mph
Precip: 0%

Mon
5:00pm

Sunny

26°F
Dew Pt 6°F
Wind Chill: 22°F
Wind from SW

SW 3 mph
Precip: 0%

Mon
6:00pm

Mostly Clear

23°F
Dew Pt 6°F
Wind Chill: 18°F
Wind from S

S 3 mph
Precip: 0%

Mon
7:00pm

Mostly Clear

21°F
Dew Pt 7°F
Wind Chill: 16°F
Wind from S

S 3 mph
Precip: 0%

Mon
8:00pm

Mostly Clear

18°F
Dew Pt 8°F
Wind Chill: 13°F
Wind from S

S 3 mph
Precip: 0%

Mon
9:00pm

Clear

17°F
Dew Pt 8°F
Wind Chill: 10°F
Wind from S

S 3 mph
Precip: 0%

Mon
10:00pm

Clear

16°F
Dew Pt 7°F
Wind Chill: 9°F
Wind from S

S 5 mph
Precip: 0%

Mon
11:00pm

Clear

15°F
Dew Pt 7°F
Wind Chill: 8°F
Wind from S

S 5 mph
Precip: 0%

Tue
12:00am

Clear

15°F
Dew Pt 8°F
Wind Chill: 8°F
Wind from SW

SW 5 mph
Precip: 1%

Tue
1:00am

Mostly Clear

16°F
Dew Pt 8°F
Wind Chill: 9°F
Wind from SW

SW 5 mph
Precip: 1%

Tue
2:00am

Mostly Clear

16°F
Dew Pt 8°F
Wind Chill: 8°F
Wind from SW

SW 5 mph
Precip: 1%

Tue
3:00am

Clear

16°F
Dew Pt 9°F
Wind Chill: 8°F
Wind from S

S 5 mph
Precip: 1%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 011840
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
140 PM EST Sun Mar 1 2026

.WHAT HAS CHANGED...
No significant changes were made to the forecast through
Tuesday.

&&

.KEY MESSAGES...

- Lingering snow showers end later this afternoon giving way to
  very cold temperatures tonight through Tuesday morning.

- A wintry mix of precipitation is possible Tuesday into 
  Tuesday night. 

- Remaining unsettled beyond Wednesday with temperatures 
  trending above normal.

&&

.DISCUSSION...
KEY MESSAGE 1...Lingering snow showers end later this afternoon
giving way to very cold temperatures tonight through Tuesday
morning.

Line of light to moderate snow showers quickly exits the coast
later this afternoon, weakening as it does so. Should see skies 
quickly clear with increasing northwest winds and a sharp drop
in temperatures this evening. The Arctic front ushers in another 
round of very cold temperatures starting tonight and lasting
into Tuesday morning. 850 mb temps bottom out at -16C Monday
morning, with the 510 thickness line nearly reaching southern 
New England. This will result in low temperatures Monday morning
in the low single digits, possibly below zero in NW MA. With a
little leftover wind from the arctic front overnight, the wind
chill index will be below zero Monday morning, possibly
approaching -10 across the interior.

Despite the higher March sun angle, high temperatures will stay
below freezing on Monday with a wind chill index in the lower 
20s. 850mb temperatures begin to rise overnight Monday. However, 
strong radiational cooling under calm winds and clear skies will
allow low temperatures to bottom out in the low teens to high 
single digits Tuesday morning. 

KEY MESSAGE 2...A wintry mix of precipitation is possible
Tuesday into Tuesday night. 

Still expecting a wintry mix to develop Tuesday into Tuesday
night. Temperatures should initially remain low enough where
some light snowfall is possible across the higher terrain of 
CT and MA. Not expecting this will last long as temperatures
continue to rise. Expecting plain rainfall across most of
southern New England by Tuesday evening. Still thinking the cold 
front associated with the low pressure passing by our region
should be off the coast by Wednesday morning. Thus, decreasing
precipitation chances from NW to SE late Tuesday night. Should 
be dry across all of southern New England by mid morning 
Wednesday.

Thinking light snowfall accumulations of generally less than 1
inch. Kept the possibility of freezing rain out of the forecast 
at this time, largely because it would be brief and the timing
remains uncertain. Will get a better handle on this as we get
more into the range of the high resolution guidance. A more
substantial period of freezing rain would only cut into snowfall 
accumulations even more. However, winter weather headlines may 
be needed for the icing potential.

KEY MESSAGE 3...Remaining unsettled beyond Wednesday with 
temperatures trending above normal. 

The active weather pattern continues through the end of this
upcoming work week as the zonal jet stream and stalled frontal
boundary send several weak waves near or through southern New
England. Temperatures starting Wednesday are expected to rise
well above normal, with highs approaching the 50s and overnight 
lows even staying near or above freezing. This will help keep 
any precipitation that falls during this time as rain.

Still thinking our region gets caught between a pair of fronts 
Thursday into Friday, making this a more specific time with a
greater risk for rainfall. Otherwise, it appears that we'll have 
at least a chance of off-and-on precipitation through next 
weekend.

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
Forecaster Confidence Levels...

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

Through 00z Monday...High Confidence.

VFR behind the snow with gusty NW winds around 20 knots. 

Tonight through Monday...High Confidence.

Conditions return to VFR after the -SN moves offshore. NW-ly 
winds 5-10 knots.

KBOS Terminal...Moderate confidence in TAF.

VFR. NW-ly winds 5-10 knots.

KBDL Terminal...Moderate confidence in TAF.

VFR. NW-ly winds 5-10 knots.

Outlook /Monday Night through Friday/...

Monday Night: VFR. 

Tuesday: Mainly VFR, with local IFR possible. RA likely, chance
SN.

Tuesday Night: Mainly IFR, with areas MVFR possible. Breezy.
RA, chance SN.

Wednesday: VFR. Slight chance RA.

Wednesday Night through Thursday: Mainly VFR, with areas IFR
possible. Chance RA.

Thursday Night: MVFR/IFR conditions possible. RA likely.

Friday: MVFR/IFR conditions possible. Chance RA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Monday...High confidence.

Northerly winds of 25-30 knots tonight into Monday morning, with 
seas building to 5 feet across the outer waters where SCA's 
continue through Monday afternoon. Widespread light to moderate 
freezing spray across the inner waters beginning later tonight 
and lingering through late Monday morning. Winds, seas, and 
spray subside later Monday afternoon as high pressure builds 
overhead.

Outlook /Monday Night through Friday/...

Monday Night: Winds less than 25 kt. 

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

Tuesday Night: Winds less than 25 kt. Areas of seas approaching
5 ft. Rain. 

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

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

Thursday Night through Friday: Winds less than 25 kt. Seas up
to 5 ft. Chance of rain. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Freezing Spray Advisory from 1 AM to 10 AM EST Monday for 
     ANZ231>235-237-251-255-256.
     Small Craft Advisory from 9 PM this evening to 1 PM EST Monday 
     for ANZ250-254>256.

&&

$$

DISCUSSION...Belk/FT
AVIATION...Belk/FT
MARINE...Belk/FT

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