Lexington Weather

Current Conditions [‒] Current Conditions [+]

41.0°F Colder than last hour.

5.0°C

Chilly

Clear

Today: Hi 43 °F

Tonight: Lo 33 °F

Dew Point: 17.4°F Decreased 2.5°F since last hour.

Humidity: 38% Decreased 4.0% since last hour.

Air Quality Index: 31

Good

(Ozone)

Barometer: 29.96 in S

1015 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Thursday: 0.25 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 5 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Today, Tonight, & Saturday through Thursday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Fri Mar 13, 2026 7:24am EDT

Today:

Mostly Sunny

Hi 43 °F

Mostly sunny, with a high near 43. Southwest wind 7 to 10 mph.

Tonight:

Scattered Rain Showers

Lo 33 °F

Scattered rain showers. Mostly cloudy, with a low around 33. South wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Saturday:

Mostly Sunny

Hi 47 °F

Mostly sunny, with a high near 47. West wind 10 to 23 mph, with gusts as high as 43 mph.

Saturday Night:

Mostly Clear

Lo 29 °F

Mostly clear, with a low around 29. West wind 5 to 21 mph, with gusts as high as 35 mph.

Sunday:

Mostly Cloudy

Hi 44 °F

Mostly cloudy, with a high near 44. Northeast wind 3 to 8 mph.

Sunday Night:

Mostly Cloudy then Chance Light Rain

Lo 36 °F

A chance of rain after 2am. Mostly cloudy, with a low around 36. Southeast wind 7 to 10 mph. Chance of precipitation is 40%.

Monday:

Light Rain

Hi 62 °F

Rain. Cloudy, with a high near 62. Southeast wind 10 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.

Monday Night:

Rain

Lo 44 °F

Rain. Cloudy, with a low around 44. South wind 15 to 28 mph, with gusts as high as 45 mph. Chance of precipitation is 90%.

Tuesday:

Light Rain Likely

Hi 50 °F

Rain likely before 2pm. Partly sunny, with a high near 50. Southwest wind 14 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.

Tuesday Night:

Mostly Clear

Lo 23 °F

Mostly clear, with a low around 23. West wind around 13 mph, with gusts as high as 24 mph.

Wednesday:

Sunny

Hi 39 °F

Sunny, with a high near 39. West wind around 9 mph.

Wednesday Night:

Mostly Cloudy

Lo 26 °F

Mostly cloudy, with a low around 26. South wind around 7 mph.

Thursday:

Mostly Cloudy

Hi 44 °F

Mostly cloudy, with a high near 44. South wind 5 to 8 mph.

Thursday Night:

Mostly Cloudy

Lo 31 °F

Mostly cloudy, with a low around 31. South wind 5 to 8 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Sun 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Fri Mar 13, 2026 7:24am EDT

2:00pm

Mostly Cloudy

42°F
Dew Pt 17°F
Wind Chill: 36°F
Wind from SW

SW 9 mph
Precip: 0%

3:00pm

Mostly Cloudy

43°F
Dew Pt 17°F
Wind Chill: 37°F
Wind from SW

SW 10 mph
Precip: 2%

4:00pm

Mostly Cloudy

42°F
Dew Pt 18°F
Wind Chill: 36°F
Wind from S

S 10 mph
Precip: 3%

5:00pm

Cloudy

42°F
Dew Pt 19°F
Wind Chill: 36°F
Wind from S

S 10 mph
Precip: 8%

6:00pm

Slight Chance Rain Showers

40°F
Dew Pt 21°F
Wind Chill: 33°F
Wind from S

S 10 mph
Precip: 17%

7:00pm

Slight Chance Rain Showers

39°F
Dew Pt 21°F
Wind Chill: 32°F
Wind from S

S 10 mph
Precip: 17%

8:00pm

Cloudy

37°F
Dew Pt 22°F
Wind Chill: 30°F
Wind from S

S 9 mph
Precip: 9%

9:00pm

Cloudy

35°F
Dew Pt 22°F
Wind Chill: 27°F
Wind from S

S 10 mph
Precip: 13%

10:00pm

Mostly Cloudy

34°F
Dew Pt 24°F
Wind Chill: 26°F
Wind from S

S 10 mph
Precip: 11%

11:00pm

Slight Chance Rain Showers

34°F
Dew Pt 25°F
Wind Chill: 26°F
Wind from S

S 12 mph
Precip: 23%

Sat
12:00am

Scattered Rain Showers

35°F
Dew Pt 27°F
Wind Chill: 26°F
Wind from S

S 13 mph
Precip: 52%
Rain: 0.01 in

Sat
1:00am

Scattered Rain Showers

36°F
Dew Pt 29°F
Wind Chill: 27°F
Wind from S

S 14 mph
Precip: 43%
Rain: 0.01 in

Sat
2:00am

Scattered Rain Showers

37°F
Dew Pt 31°F
Wind Chill: 28°F
Wind from S

S 14 mph
Precip: 29%

Sat
3:00am

Scattered Rain Showers

38°F
Dew Pt 31°F
Wind Chill: 30°F
Wind from S

S 13 mph
Precip: 28%

Sat
4:00am

Scattered Rain Showers

39°F
Dew Pt 31°F
Wind Chill: 32°F
Wind from SW

SW 12 mph
Precip: 30%

Sat
5:00am

Slight Chance Rain Showers

38°F
Dew Pt 32°F
Wind Chill: 31°F
Wind from SW

SW 10 mph
Precip: 19%

Sat
6:00am

Mostly Sunny

38°F
Dew Pt 31°F
Wind Chill: 31°F
Wind from SW

SW 10 mph
Precip: 14%

Sat
7:00am

Mostly Sunny

37°F
Dew Pt 30°F
Wind Chill: 29°F
Wind from SW

SW 12 mph
Precip: 10%

Sat
8:00am

Mostly Sunny

37°F
Dew Pt 29°F
Wind Chill: 29°F
Wind from SW

SW 12 mph
Precip: 5%

Sat
9:00am

Mostly Sunny

39°F
Dew Pt 28°F
Wind Chill: 31°F
Wind from SW

SW 14 mph
Precip: 4%

Sat
10:00am

Partly Sunny

42°F
Dew Pt 27°F
Wind Chill: 34°F
Wind from W

W 16 mph
Precip: 2%

Sat
11:00am

Partly Sunny

44°F
Dew Pt 27°F
Wind Chill: 36°F
Wind from W

W 18 mph
Precip: 1%

Sat
12:00pm

Partly Sunny

45°F
Dew Pt 26°F
Wind Chill: 37°F
Wind from W

W 20 mph
Precip: 1%

Sat
1:00pm

Partly Sunny

45°F
Dew Pt 25°F
Wind Chill: 37°F
Wind from W

W 20 mph
Precip: 1%

Sat
2:00pm

Partly Sunny

45°F
Dew Pt 25°F
Wind Chill: 37°F
Wind from W

W 21 mph
Precip: 1%

Sat
3:00pm

Mostly Sunny

45°F
Dew Pt 24°F
Wind Chill: 37°F
Wind from W

W 22 mph
Precip: 1%

Sat
4:00pm

Mostly Sunny

45°F
Dew Pt 24°F
Wind Chill: 37°F
Wind from W

W 22 mph
Precip: 1%

Sat
5:00pm

Sunny

44°F
Dew Pt 23°F
Wind Chill: 35°F
Wind from W

W 23 mph
Precip: 1%

Sat
6:00pm

Mostly Clear

42°F
Dew Pt 23°F
Wind Chill: 33°F
Wind from W

W 21 mph
Precip: 1%

Sat
7:00pm

Mostly Clear

40°F
Dew Pt 22°F
Wind Chill: 31°F
Wind from W

W 20 mph
Precip: 0%

Sat
8:00pm

Mostly Clear

39°F
Dew Pt 21°F
Wind Chill: 32°F
Wind from W

W 12 mph
Precip: 0%

Sat
9:00pm

Mostly Clear

37°F
Dew Pt 21°F
Wind Chill: 30°F
Wind from W

W 10 mph
Precip: 0%

Sat
10:00pm

Mostly Clear

36°F
Dew Pt 20°F
Wind Chill: 29°F
Wind from W

W 10 mph
Precip: 0%

Sat
11:00pm

Mostly Clear

35°F
Dew Pt 20°F
Wind Chill: 27°F
Wind from W

W 10 mph
Precip: 0%

Sun
12:00am

Mostly Clear

34°F
Dew Pt 20°F
Wind Chill: 27°F
Wind from W

W 9 mph
Precip: 0%

Sun
1:00am

Mostly Clear

34°F
Dew Pt 19°F
Wind Chill: 27°F
Wind from W

W 8 mph
Precip: 0%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 131121
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
721 AM EDT Fri Mar 13 2026

.WHAT HAS CHANGED...

Confidence continues to grow in the likelihood for at least some 
wind headlines Saturday. Otherwise, no significant changes.

&&

.KEY MESSAGES...

- Dry & seasonably cool today. A few brief passing rain/snow
  showers tonight with focus across northern MA.

- Strong westerly wind gusts of 35-55 mph on Sat...Wind 
  Headline will likely be needed at least for parts of the 
  region.

- A period of heavy rainfall, strong winds and unseasonably mild
  temps Mon into Mon night. Some river and small stream 
  flooding expected.

- Trending colder with mainly dry weather Tue through Thu.

&&

.DISCUSSION...

KEY MESSAGE 1...Dry & seasonably cool today. A few brief 
passing rain/snow showers tonight with focus across northern 
MA.

Post frontal/dry airmass overspreading the region early this 
morning, on gusty NW winds 25 to 35 mph during the predawn 
hours. Strong CAA with 850 mb temps lowering to -10C to -12C 
early this morning, yielding lows in the 20s before sunrise, 
along with colder wind chills. Although, partly to mostly sunny 
conditions later this morning, combined with diminishing winds 
will take the edge off the cool temps. Highs this afternoon will
be in the 40s, which is just about on track for this time of 
year. Fast/progressive flow aloft yields a WAA pattern 
overspreading the region this afternoon, yielding increasing 
clouds and SW winds increasing 15-20 mph. Hence, morning hours 
brighter than the afternoon. 

A shortwave and associated warm front will likely bring a few 
brief passing rain/snow showers to the region 
tonight...particularly across northern MA. 

KEY MESSAGE 2...Strong westerly wind gusts of 40-50 mph on Sat.
Wind headlines will likely be needed at least for parts of the 
region. 

Mainly dry weather Saturday, with partly to mostly sunny 
conditions, but windy and chilly. Deepening low over the 
maritimes will yield a strong pgrad along with strong CAA. 
Increasing March sun angle will combine with strong CAA to 
yield steep low level lapse rates. Model soundings support WNW 
winds gusting up to 40 to 50. Thus, wind headlines may be 
required. Given the aforementioned attributes, our wind 
forecast incorporates some of the higher guidance (NBM 90 
percentile), supporting wind gusts up to 40-50 mph at times 
Sat. Seasonably cool with highs in the mid to upper 40s, but 
feeling much cooler given the strong winds. 

KEY MESSAGE 3...A period of heavy rainfall, strong winds and 
unseasonably mild temps Mon into Mon night. Some river and small 
stream flooding expected.

Guidance has trended a bit slower with the heavy rainfall and 
wind event and is more focused in the Monday to Monday night 
period. Initial wave of showers will overspread the region late 
Sun night into Mon associated with the low level jet and 
moisture transport lifting northward into the region. Winds will
also ramp up in this period but the period of strongest winds 
and heaviest rainfall will likely come late Mon and especially 
Mon night with the second and stronger LLJ ahead of the 
advancing cold front. Wind and PWAT anomalies are 3-4 SD above 
normal which is a pretty strong signal for heavy rainfall and 
strong winds. The other wildcard is the potential for convective
elements and a few t-storms and can't rule out a fine line of 
convection along the cold front Mon night given strong forcing 
for ascent and elevated instability. We are expecting 1-2 inches
of rain with localized 3 inch amounts if convection gets 
involved. 90th percentile of the ensemble guidance is indicating
up to 3 inches which would be a worst case scenario but think 
these higher amounts would be localized. 

The expected rainfall amounts would be enough to cause flood 
concerns along some rivers and small streams. MMEFS ensemble 
guidance from the NAEFS continue to show several rivers reaching 
flood stage, especially the Pawtuxet, Pawcatuck and Wood Rivers
in RI. Probs are 60-80% for minor flooding and there are even 
low probs (20-30%) of moderate flooding. Other rivers to watch 
for potential minor flooding include the Assabet River at 
Maynard, Deerfield River at West Deerfield and the lower reaches
of the CT River from Hartford to Middle Haddam. 

Regarding strong wind potential, while winds will be increasing 
Monday the greatest concern for a period of strong to damaging wind 
gusts will be Mon night ahead of the cold front. Some of the global 
guidance is indicating a 70-80 kt LLJ which is pretty impressive at 
this time range, but it's always a challenge determining how much 
wind will mix down to the surface with these southerly LLJ events. 
Temps will likely make a run at 60 or even lower 60s late Mon into 
Mon evening which would increase potential for strong to damaging 
gusts. Also, any fine line would help to mix down stronger winds. 
These are factors that we will have a better handle on this weekend. 

KEY MESSAGE 4...Trending colder with mainly dry weather Tue through 
Thu.

Looks mainly dry on Tue but this will depend on the cold front 
moving to the east by Tue morning. If timing of fropa is further 
delayed it's possible showers could linger into Tue morning, 
especially in the east. Otherwise, drying out and turning cooler and 
blustery Tue behind the cold front. Core of coldest air aloft will 
be over New Eng on Wed which will be the coldest day of the week 
with highs mostly in the 30s, with slight moderation on Thu.

&&

.AVIATION /12Z FRIDAY THROUGH TUESDAY/...

Forecaster Confidence Levels...

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

Today...High confidence.

VFR, though with increasing mid-level clouds as the day wears
along. WNW winds becoming SW this afternoon at 7-13 knots.

Tonight...High confidence. 

VFR dominates...but brief MVFR conditions possible mainly later
tonight in a few brief passing rain/snow showers. Greatest risk
for this will be across northern MA. Southerly wind gusts
increasing to between 20 and 30 knot for a time overnight.

Saturday...High confidence. 

Mainly VFR conditions expected outside a few brief passing
rain/snow showers possible mainly in northwest MA. Westerly wind
gusts of 30-40 knots with a few gusts up to 45 knots possible
across the higher terrain. 

KBOS Terminal...High confidence in TAF.

KBDL Terminal...High confidence in TAF.

Outlook /Saturday Night through Tuesday/...

Saturday Night: VFR. Windy with local gusts up to 30 kt. 

Sunday: VFR. Breezy. 

Sunday Night: Mainly VFR, with local IFR possible. Windy with
gusts up to 35 kt. Chance RA, slight chance FZRA.

Monday: Mainly MVFR, with areas IFR possible. Strong winds with
gusts up to 40 kt. RA, isolated TSRA.

Monday Night: Mainly MVFR, with local IFR possible. Strong
winds with gusts up to 45 kt. RA.

Tuesday: VFR. Windy with gusts up to 35 kt. Slight chance RA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Rough seas linger across the outer coastal waters into Friday
morning. Winds expected to briefly diminish Friday afternoon,
before increasing once more from the south Friday night.

Outlook /Saturday Night through Tuesday/...

Saturday Night: Low risk for Small Craft Advisory winds with
areas of gusts up to 30 kt. Local rough seas. 

Sunday: Winds less than 25 kt. 

Sunday Night: Low risk for gale force winds with gusts up to
35 kt. Local rough seas. Chance of rain. 

Monday: gale force winds with gusts up to 45 kt. Rough seas up
to 16 ft. Rain, isolated thunderstorms. 

Monday Night: gale force winds with gusts up to 45 kt. Rough
seas up to 18 ft. Rain. 

Tuesday: Strong winds with gusts up to 35 kt. Rough seas up to
13 ft. Chance of rain.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 AM EDT this morning for 
     ANZ231>235-237-251.
     Gale Watch from Saturday morning through Saturday afternoon 
     for ANZ232>235-237.
     Small Craft Advisory until 10 AM EDT this morning for ANZ250-
     256.
     Small Craft Advisory until 4 PM EDT this afternoon for ANZ254-
     255.
     Gale Watch from late tonight through Saturday afternoon for 
     ANZ254>256.

&&

$$

DISCUSSION...KJC/Frank/Nocera
AVIATION...Frank/Nocera
MARINE...Nocera

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