Lexington Weather

Current Conditions [‒] Current Conditions [+]

62.4°F Warmer than last hour.

16.9°C

Comfortable

Mostly cloudy

Today: Hi 66 °F

Tonight: Lo 40 °F

Dew Point: 58.5°F Increased 0.6°F since last hour .

Humidity: 87% Decreased 4.0% since last hour.

Air Quality Index: 57

Moderate

(Fine Particles)

Barometer: 29.89 in S

1012 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.12 in

Rain Monday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Today, Tonight, & Wednesday through Monday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Tue Mar 31, 2026 6:35am EDT

Today:

Chance Showers And T-Storms

Hi 66 °F

A chance of rain showers before 8am, then a chance of showers and thunderstorms. Mostly cloudy. High near 66, with temperatures falling to around 54 in the afternoon. Southwest wind 7 to 17 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tonight:

Scattered Showers And T-Storms then Patchy Fog

Lo 40 °F

Tonight: Scattered Showers And Thunderstorms then Patchy Fog

Scattered showers and thunderstorms before 10pm, then patchy fog and scattered showers and thunderstorms. Mostly cloudy, with a low around 40. East wind 2 to 13 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.

Wednesday:

Rain Showers Likely

Hi 67 °F

Rain showers likely after 7am. Mostly cloudy. High near 67, with temperatures falling to around 56 in the afternoon. West wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Wednesday Night:

Rain Showers Likely

Lo 37 °F

Rain showers likely. Cloudy, with a low around 37. Northeast wind around 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday:

Chance Rain Showers

Hi 41 °F

A chance of rain showers. Cloudy, with a high near 41. Northeast wind around 10 mph. Chance of precipitation is 40%.

Thursday Night:

Chance Rain Showers

Lo 37 °F

A chance of rain showers. Cloudy, with a low around 37. East wind 5 to 9 mph. Chance of precipitation is 40%.

Friday:

Slight Chance Rain Showers then Mostly Cloudy

Hi 65 °F

A slight chance of rain showers before 8am. Mostly cloudy, with a high near 65. South wind 5 to 10 mph.

Friday Night:

Slight Chance Light Rain

Lo 53 °F

A slight chance of rain between 10pm and 2am. Mostly cloudy, with a low around 53. Southwest wind 7 to 10 mph.

Saturday:

Mostly Cloudy then Slight Chance Light Rain

Hi 68 °F

A slight chance of rain after noon. Mostly cloudy, with a high near 68. North wind around 9 mph.

Saturday Night:

Chance Light Rain

Lo 44 °F

A chance of rain. Mostly cloudy, with a low around 44. Southeast wind around 8 mph. Chance of precipitation is 40%.

Sunday:

Chance Light Rain

Hi 69 °F

A chance of rain. Mostly cloudy, with a high near 69. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

Sunday Night:

Chance Rain

Lo 45 °F

A chance of rain. Mostly cloudy, with a low around 45. Southwest wind around 10 mph. Chance of precipitation is 50%.

Monday:

Chance Light Rain

Hi 54 °F

A chance of rain. Mostly cloudy, with a high near 54. Northwest wind around 9 mph. Chance of precipitation is 40%.

Monday Night:

Chance Light Rain

Lo 35 °F

A chance of rain. Mostly cloudy, with a low around 35. Northwest wind around 8 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Thu 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Tue Mar 31, 2026 6:35am EDT

2:00pm

Scattered Showers And Thunderstorms

65°F
Dew Pt 54°F
Wind from W

W 15 mph
Precip: 35%
Rain: 0.02 in

3:00pm

Scattered Showers And Thunderstorms

62°F
Dew Pt 52°F
Wind from W

W 12 mph
Precip: 31%
Rain: 0.01 in

4:00pm

Scattered Rain Showers

59°F
Dew Pt 49°F
Wind from S

S 9 mph
Precip: 27%
Rain: 0.01 in

5:00pm

Scattered Rain Showers

54°F
Dew Pt 46°F
Wind from E

E 13 mph
Precip: 28%
Rain: 0.01 in

6:00pm

Scattered Showers And Thunderstorms

48°F
Dew Pt 43°F
Wind Chill: 43°F
Wind from E

E 13 mph
Precip: 30%
Rain: 0.01 in

7:00pm

Scattered Rain Showers

43°F
Dew Pt 41°F
Wind Chill: 36°F
Wind from E

E 13 mph
Precip: 29%
Rain: 0.01 in

8:00pm

Scattered Showers And Thunderstorms

41°F
Dew Pt 40°F
Wind Chill: 39°F
Wind from E

E 3 mph
Precip: 33%
Rain: 0.02 in

9:00pm

Scattered Showers And Thunderstorms

41°F
Dew Pt 41°F
Wind Chill: 36°F
Wind from E

E 8 mph
Precip: 38%
Rain: 0.03 in

10:00pm

Patchy Fog

40°F
Dew Pt 40°F
Wind Chill: 35°F
Wind from N

N 7 mph
Precip: 49%
Rain: 0.04 in

11:00pm

Patchy Fog

40°F
Dew Pt 40°F
Wind Chill: 35°F
Wind from N

N 6 mph
Precip: 52%
Rain: 0.04 in

Wed
12:00am

Patchy Fog

40°F
Dew Pt 40°F
Wind Chill: 36°F
Wind from E

E 5 mph
Precip: 52%
Rain: 0.04 in

Wed
1:00am

Scattered Showers And Thunderstorms

40°F
Dew Pt 40°F
Wind Chill: 37°F
Wind from SE

SE 3 mph
Precip: 41%
Rain: 0.03 in

Wed
2:00am

Scattered Rain Showers

40°F
Dew Pt 40°F
Wind from S

S 2 mph
Precip: 42%

Wed
3:00am

Scattered Rain Showers

40°F
Dew Pt 40°F
Wind Chill: 38°F
Wind from S

S 3 mph
Precip: 33%

Wed
4:00am

Scattered Rain Showers

41°F
Dew Pt 41°F
Wind from S

S 2 mph
Precip: 28%

Wed
5:00am

Isolated Rain Showers

44°F
Dew Pt 44°F
Wind from S

S 2 mph
Precip: 18%

Wed
6:00am

Partly Sunny

56°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 14%

Wed
7:00am

Isolated Rain Showers

57°F
Dew Pt 50°F
Wind from SW

SW 10 mph
Precip: 17%

Wed
8:00am

Chance Rain Showers

58°F
Dew Pt 47°F
Wind from SW

SW 10 mph
Precip: 43%
Rain: 0.01 in

Wed
9:00am

Chance Rain Showers

59°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 43%
Rain: 0.01 in

Wed
10:00am

Chance Rain Showers

59°F
Dew Pt 51°F
Wind from W

W 8 mph
Precip: 43%
Rain: 0.01 in

Wed
11:00am

Chance Rain Showers

60°F
Dew Pt 53°F
Wind from W

W 9 mph
Precip: 43%
Rain: 0.01 in

Wed
12:00pm

Chance Rain Showers

63°F
Dew Pt 53°F
Wind from W

W 9 mph
Precip: 48%
Rain: 0.01 in

Wed
1:00pm

Chance Rain Showers

65°F
Dew Pt 52°F
Wind from NW

NW 9 mph
Precip: 53%
Rain: 0.01 in

Wed
2:00pm

Rain Showers Likely

67°F
Dew Pt 52°F
Wind from NW

NW 9 mph
Precip: 58%
Rain: 0.02 in

Wed
3:00pm

Rain Showers Likely

64°F
Dew Pt 52°F
Wind from NW

NW 9 mph
Precip: 63%
Rain: 0.02 in

Wed
4:00pm

Rain Showers Likely

60°F
Dew Pt 52°F
Wind from NE

NE 9 mph
Precip: 68%
Rain: 0.02 in

Wed
5:00pm

Rain Showers Likely

56°F
Dew Pt 51°F
Wind from NE

NE 9 mph
Precip: 73%
Rain: 0.02 in

Wed
6:00pm

Rain Showers Likely

53°F
Dew Pt 49°F
Wind from NE

NE 9 mph
Precip: 72%
Rain: 0.02 in

Wed
7:00pm

Rain Showers Likely

50°F
Dew Pt 47°F
Wind Chill: 47°F
Wind from NE

NE 8 mph
Precip: 72%
Rain: 0.02 in

Wed
8:00pm

Rain Showers Likely

48°F
Dew Pt 45°F
Wind Chill: 44°F
Wind from NE

NE 8 mph
Precip: 73%
Rain: 0.03 in

Wed
9:00pm

Rain Showers Likely

46°F
Dew Pt 43°F
Wind Chill: 42°F
Wind from NE

NE 8 mph
Precip: 73%
Rain: 0.03 in

Wed
10:00pm

Rain Showers Likely

44°F
Dew Pt 41°F
Wind Chill: 39°F
Wind from NE

NE 8 mph
Precip: 72%
Rain: 0.03 in

Wed
11:00pm

Rain Showers Likely

43°F
Dew Pt 40°F
Wind Chill: 38°F
Wind from NE

NE 8 mph
Precip: 72%
Rain: 0.03 in

Thu
12:00am

Rain Showers Likely

42°F
Dew Pt 39°F
Wind Chill: 37°F
Wind from NE

NE 8 mph
Precip: 68%
Rain: 0.03 in

Thu
1:00am

Rain Showers Likely

42°F
Dew Pt 38°F
Wind Chill: 37°F
Wind from NE

NE 8 mph
Precip: 63%
Rain: 0.03 in

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 311136
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
736 AM EDT Tue Mar 31 2026

.WHAT HAS CHANGED...

Wavy frontal boundary will lead to large swings in temperature 
around midweek into the weekend with several rain chances.

&&

.KEY MESSAGES...

- Showers with brief heavy downpours this morning with perhaps
  an isolated t-storm or two. 

- Expecting a very sharp temperature gradient Tues with a 
  secondary round of showers in the PM.

- Milder but unsettled pattern later this week brings showers
  from time to time. 

- Watching mainstem Connecticut River for possible minor river 
  flooding from Hartford through Middletown this weekend.

&&

.DISCUSSION...

KEY MESSAGE 1...Showers with brief heavy downpours this morning
with perhaps an isolated t-storm or two.

Continuing to eye a quick moving round of rain showers in the 
early morning hours of Tuesday as a mid-level shortwave moves 
through. Latest model guidance seems to indicate a delayed 
arrival compared to earlier in the evening... thinking maybe 
more after sunrise instead of just before... especially for 
eastern MA. Still looks to be just enough instability to 
possibly pop a rumble of thunder or two, especially later in the
morning, but probs are still quite low... HREF indicating 
around 10 percent or so. Not everywhere will see showers this 
morning, but some areas could see brief heavy downpours, and the
Tuesday morning commute is likely to be impacted.

KEY MESSAGE 2...Expecting a very sharp temperature gradient 
Tues with a secondary round of showers in the PM.

Already starting to see a backdoor front hovering over northern
New England, and expecting that to drop south into southern New
England later Tues. Overnight model guidance has solidified in 
indicating NE MA/Merrimack Valley could see that front drop 
through as early as mid-day or very early afternoon. Still some 
uncertainty in how far south/east the front will drop which 
makes the temperature forecast tricky, with a 25-30 degree 
temperature difference possible along the boundary. Still 
thinking NE MA has a change at seeing the low 50s, and 
confidence in the lower CT Valley reaching into the lower 70s is
high. Once the front moves in, temps will likely drop 
quickly... into the low 40s, possible the upper 30s.

Expecting to see a few hours of drying out after this morning's
quick push of showers, but confidence is increasing in a 
secondary round of showers (and possible t-storms) developing 
later in the afternoon/evening, especially across the interior 
with storms initiating across upstate NY. The latest guidance 
seems split with some models continuing to indicate a low-end 
severe possibility lingering into southern New England and 
others keeping the convection in VT and NH. Regardless, 
instability remains rather unimpressive with only pockets of 
CAPE near 500 J/kg scattered across interior SNE. We'll continue
to monitor throughout the morning, but the most likely scenario
continues to be a few spots of weakening convection moving into
the region.

KEY MESSAGE 3...Milder but unsettled pattern later this week 
brings showers from time to time.

Subtropical ridge is expected to build off East Coast later 
this week and into weekend, while mean trough sets up near Great
Lakes, resulting in broad and moist SW flow aloft. Presence of 
frontal boundary nearby gives an unsettled look to much of 
period from Thursday through the weekend as it lifts north and 
sags southward from time to time, but forecast will probably 
appear more pessimistic with chances of rain each day, while in 
reality showers will be tied to passage of several weak short 
waves and position of front itself, meaning it won't rain all of
the time.

Depending upon the exact location of front, it at least appears
right now that some warmer days are ahead, especially over the 
weekend when temperatures possibly reach the 70s per ensemble 
probabilities. Forecast reflects a bit of a compromise right now
given uncertainty in position of front and will show 
temperatures that are a little cooler.

KEY MESSAGE 4...Watching mainstem Connecticut River for 
possible minor river flooding from Hartford through Middletown 
this weekend.

The combination of rainfall and upstream snowmelt is expected 
to lead to rises along the mainstem Connecticut River over the 
next several days. Ensemble river forecasts show low chances 
(30-40%) of reaching minor flood along lower Connecticut River 
from Hartford to Middletown this weekend, but that appears to be
a higher-end scenario right now. It is more likely that the 
river will remain within its banks but we will need to assess 
rainfall and snowmelt over next couple of days to get a better 
sense of potential impacts.

&&

.AVIATION /12Z TUESDAY THROUGH SATURDAY/...

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

12z TAF Update...Moderate confidence except low confidence in
timing of any precipitation. 

Mainly VFR this morning...but clusters of showers with 
downpours with even perhaps a rumble of thunder will result in
briefly lower localized conditions. Otherwise...SW winds gust 20
to 30 knots with the strongest near the south coast this
morning. 

SW winds prevail until a backdoor cold front crosses eastern MA
in the 17z to 20z time frame. This should reach central MA after
21z/22z. It will then stall and gradually begin to move back as
a warm front later tonight. Then the warm front flips back to a
backdoor cold front and sweeps through the entire region during
the day Wednesday. VFR conditions will dominate southwest of 
the backdoor cold front...but low clouds will result in MVFR- 
IFR ceilings to the northeast of the backdoor front. 

We have one cluster of showers moving through this morning.
Models really struggling with timing of additional showers...but
perhaps another round somewhere around mid-afternoon with the 
greatest risk overnight. These additional showers may contain a 
few thunderstorms too along with brief downpours.

KBOS Terminal...Moderate confidence in TAF except low confidence
in timing of any showers/isolated t-storm risk. We think the 
backdoor cold front crosses the region in the 18z/19z time 
frame...which will be followed by MVFR-IFR ceilings. 

KBDL Terminal...Moderate confidence in TAF but low confidence in
timing of any showers/isolated t-storm risk. 

Outlook /Wednesday Night through Saturday/...

Wednesday Night: MVFR/IFR conditions possible. Breezy. SHRA
likely.

Thursday through Thursday Night: MVFR/IFR conditions possible.
Breezy. Chance SHRA.

Friday: Mainly VFR, with local IFR possible. Breezy. 

Friday Night through Saturday: Breezy. Slight chance RA.

&&

.MARINE...

Forecaster Confidence Levels...

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

Expecting another round of 20-30kt SW wind gusts along south 
coastal waters but also ahead of backdoor front into Cape Cod 
Bay and on outer E MA waters today. Could see some brief 
marginal Gale force gusts as well. Maintaining Small Craft 
Advisories for these waters today and tonight, except through 
Wednesday on outer waters where seas will take longer to 
subside.

Front drops south and brings rapid wind shift to N/NE, starting
near Merrimack River around midday and probably settling near 
Providence and Plymouth by late afternoon. It returns northward 
tonight before dropping back south Wednesday.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: Winds less than 25 kt. Seas up to 5 ft. Rain
showers likely. Local visibility 1 nm or less.

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

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

Friday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of seas approaching 5 ft. 

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

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

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ231-
     250.
     Small Craft Advisory until 7 PM EDT Wednesday for ANZ232>235-
     237.
     Small Craft Advisory until 2 PM EDT Wednesday for ANZ236.
     Small Craft Advisory until 6 AM EDT Thursday for ANZ254>256.

&&

$$

DISCUSSION...McMinn/JWD
AVIATION...Frank
MARINE...JWD

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